MCP66/7/8/9 2.V to.v Micropower CMOS Op Amps Features Low Input Offset Voltage: 2 µv (max.) Rail-to-Rail Output Low Input Bias Current: 8 pa (max. at 8 C) Low Quiescent Current: 2 µa (max.) Power Supply Voltage: 2.V to.v Unity-Gain Stable Chip Select (CS) Capability: MCP68 Industrial Temperature Range: -4 C to +8 C No Phase Reversal Available in Single, Dual and Quad Packages Typical Applications Battery Power Instruments High-Impedance Applications - Photodiode Amplifier - ph Probe Buffer Amplifier - Infrared Detectors - Precision Integrators - Charge Amplifier for Piezoelectric Transducers Strain Gauges Medical Instruments Test Equipment Available Tools SPICE Macro Models (at www.microchip.com) FilterLab Software (at www.microchip.com) Typical Application 2.V to.v R G kω R F kω R SEN MCP66 To Load 1Ω (V LM ) Low-Side Battery Current Sensor I L To Load (V LP ) Description The MCP66/7/8/9 family of operational amplifiers (op amps) from Microchip Technology Inc. are unity-gain stable with low offset voltage (2 µv, max.). Performance characteristics include rail-to-rail output swing capability and low input bias current (8 pa at +8 C, max.). These features make this family of op amps well suited for single-supply, precision, highimpedance, battery-powered applications. The single MCP66 is available in standard 8-lead PDIP, SOIC and TSSOP packages, as well as in a SOT-23- package. The single MCP68 with Chip Select (CS) is offered in standard 8-lead PDIP, SOIC and TSSOP packages. The dual MCP67 is offered in standard 8-lead PDIP, SOIC and TSSOP packages. Finally, the quad MCP69 is offered in standard 14-lead PDIP, SOIC and TSSOP packages. All devices are fully specified from -4 C to +8 C, with power supplies from 2.V to.v. Package Types MCP66 PDIP, SOIC,TSSOP NC 1 V IN 2 V IN + 3 V SS 4 8 NC 7 V DD 6 NC MCP67 PDIP, SOIC,TSSOP A 1 V INA 2 V INA + 3 V SS 4 8 V DD 7 B 6 V INB V INB + MCP69 PDIP, SOIC,TSSOP A V INA V INA + V DD V INB + V INB B 1 2 3 4 6 7 MCP66 SOT-23-1 V DD V SS 2 V IN + 3 4 V IN MCP68 PDIP, SOIC,TSSOP NC 1 V IN 2 V IN + 3 V SS 4 14 D 13 V IND 12 V IND + 11 V SS 1 V INC + 9 V INC 8 C 8 CS 7 V DD 6 NC 2 Microchip Technology Inc. DS11177D-page 1
MCP66/7/8/9 1. ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings V DD V SS...7.V All Inputs and Outputs... V SS.3V to V DD +.3V Difference Input Voltage... V DD V SS Output Short Circuit Current...continuous Current at Input Pins...±2 ma Current at Output and Supply Pins...±3 ma Storage temperature...-6 C to +1 C Maximum Junction Temperature (T J )...+1 C ESD protection on all pins (HBM;MM)...2 kv; 2V Notice: Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. DC CHARACTERISTICS Electrical Characteristics: Unless otherwise indicated, V DD = +2.V to +.V, V SS = GND, T A = +2 C, V CM =V DD /2, V DD /2 and R L = 1 kω to V DD /2. Parameters Sym Min Typ Max Units Conditions Input Offset Input Offset Voltage V OS -2 +2 µv Input Offset Drift with Temperature ΔV OS /ΔT A ±1.8 µv/ C T A = -4 C to +8 C Power Supply Rejection Ratio PSRR 8 93 db Input Bias Current and Impedance Input Bias Current I B 1 pa At Temperature I B 8 pa T A = +8 C Input Offset Bias Current I OS 1 pa Common Mode Input Impedance Z CM 1 13 6 Ω pf Differential Input Impedance Z DIFF 1 13 6 Ω pf Common Mode Common Mode Input Range V CMR V SS.3 V DD 1.1 V CMRR 7 db Common Mode Rejection Ratio CMRR 7 91 db V DD = V, V CM = -.3V to 3.9V Open-Loop Gain DC Open-Loop Gain (Large-signal) DC Open-Loop Gain (Large-signal) Output A OL 1 121 db R L = 2 kω to V DD /2, = mv to V DD mv A OL 1 118 db R L = kω to V DD /2, =.1V to V DD.1V Maximum Output Voltage Swing V OL, V OH V SS +1 V DD 2 mv R L = 2 kω to V DD /2,.V output overdrive V OL, V OH V SS +4 V DD 6 mv R L = kω to V DD /2,.V output overdrive Linear Output Voltage Range V SS + V DD mv R L = 2 kω to V DD /2, A OL 1 db V SS + 1 V DD 1 mv R L = kω to V DD /2, A OL 1 db Output Short Circuit Current I SC 7 ma V DD = 2.V I SC 17 ma V DD =.V Power Supply Supply Voltage V DD 2.. V Quiescent Current per Amplifier I Q 18.7 2 µa I O = DS11177D-page 2 2 Microchip Technology Inc.
MCP66/7/8/9 AC CHARACTERISTICS Electrical Characteristics: Unless otherwise indicated, V DD = +2.V to +.V, V SS = GND, T A = 2 C, V CM =V DD /2, V DD /2, R L = 1 kω to V DD /2 and C L =6pF. Parameters Sym Min Typ Max Units Conditions AC Response Gain Bandwidth Product GBWP 1 khz Phase Margin PM 62 G = +1 Slew Rate SR.8 V/µs G = 1 Noise Input Noise Voltage E ni 2.8 µv P-P f =.1 Hz to 1 Hz Input Noise Voltage Density e ni 38 nv/ Hz f = 1 khz Input Noise Current Density i ni 3 fa/ Hz f = 1 khz MCP68 CHIP SELECT (CS) CHARACTERISTICS Electrical Characteristics: Unless otherwise indicated, V DD = +2.V to +.V, V SS = GND, T A = 2 C, V CM =V DD /2, V DD /2, R L = 1 kω to V DD /2 and C L =6pF. Parameters Sym Min Typ Max Units Conditions CS Low Specifications CS Logic Threshold, Low V IL V SS.2 V DD V CS Input Current, Low I CSL -.1.1 µa CS =.2V DD CS High Specifications CS Logic Threshold, High V IH.8 V DD V DD V CS Input Current, High I CSH.1.1 µa CS = V DD CS Input High, GND Current I SS -2 -. µa CS = V DD Amplifier Output Leakage, CS High I O(LEAK) 1 na CS = V DD CS Dynamic Specifications CS Low to Amplifier Output Turn-on Time t ON 9 1 µs CS =.2V DD to =.9(V DD /2), G = +1 V/V, R L = 1 kω to V SS CS High to Amplifier Output Hi-Z t OFF.1 µs CS =.8V DD to =.1(V DD /2), G = +1 V/V, R L = 1 kω to V SS CS Hysteresis V HYST.6 V V DD =.V CS V IL V IH Hi-Z t ON t OFF Hi-Z I SS - na (typ.) -18.7 µa (typ.) - na (typ.) I CS - na (typ.) - na (typ.) FIGURE 1-1: Timing Diagram for the CS Pin on the MCP68. 2 Microchip Technology Inc. DS11177D-page 3
MCP66/7/8/9 TEMPERATURE CHARACTERISTICS Electrical Characteristics: Unless otherwise indicated, V DD = +2.V to +.V and V SS =GND. Parameters Sym Min Typ Max Units Conditions Temperature Ranges Specified Temperature Range T A -4 +8 C Operating Temperature Range T A -4 +12 C Note 1 Storage Temperature Range T A -6 +1 C Thermal Package Resistances Thermal Resistance, L-SOT23 θ JA 26 C/W Thermal Resistance, 8L-PDIP θ JA 8 C/W Thermal Resistance, 8L-SOIC θ JA 163 C/W Thermal Resistance, 8L-TSSOP θ JA 124 C/W Thermal Resistance, 14L-PDIP θ JA 7 C/W Thermal Resistance, 14L-SOIC θ JA 12 C/W Thermal Resistance, 14L-TSSOP θ JA 1 C/W Note 1: The MCP66/7/8/9 operate over this extended temperature range, but with reduced performance. In any case, the Junction Temperature (T J ) must not exceed the Absolute Maximum specification of +1 C. DS11177D-page 4 2 Microchip Technology Inc.
MCP66/7/8/9 2. TYPICAL PERFORMANCE CURVES Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. Note: Unless otherwise indicated, V DD = +2.V to +.V, V SS = GND, T A =2 C, V CM =V DD /2, V DD /2, R L =1kΩ to V DD /2 and C L =6pF. Percentage of Occurances 16% 14% 12% 1% 8% 6% 4% 2% % 12 Samples V DD =.V -2-2 -1-1 - 1 1 2 2 Percentage of Occurances 2% 2% 1% 1% % % 1 2 3 4 6 12 Samples V DD =.V 7 8 9 1 Input Offset Voltage (µv) Input Offset Voltage Drift Magnitude (µv/ C) FIGURE 2-1: V DD =.V. Input Offset Voltage at FIGURE 2-4: Input Offset Voltage Drift Magnitude at V DD =.V. Percentage of Occurances 16% 14% 12% 1% 8% 6% 4% 2% % 12 Samples V DD = 2.V -2-2 -1-1 - 1 1 2 2 Percentage of Occurances 2% 2% 1% 1% % % 1 2 3 4 6 7 12 Samples V DD = 2.V 8 9 1 Input Offset Voltage (µv) Input Offset Voltage Drift Magnitude (µv/ C) FIGURE 2-2: V DD =2.V. Input Offset Voltage at FIGURE 2-: Input Offset Voltage Drift Magnitude at V DD =2.V. Quiescent Current per Amplifier (µa) 22 2 18 16 14 12 1 8 6 4 2 T A = +8 C T A = +2 C T A = -4 C.. 1. 1. 2. 2. 3. 3. 4. 4... Power Supply Voltage (V) Quiescent Current per Amplifier (µa) 24 22 2 18 16 14 V DD =.V V DD = 2.V 12 - -2 2 7 1 Ambient Temperature ( C) FIGURE 2-3: Quiescent Current vs. Power Supply Voltage. FIGURE 2-6: Quiescent Current vs. Ambient Temperature. 2 Microchip Technology Inc. DS11177D-page
MCP66/7/8/9 Note: Unless otherwise indicated, V DD = +2.V to +.V, V SS = GND, T A =2 C, V CM =V DD /2, V DD /2, R L =1kΩ to V DD /2 and C L =6pF. Input Offset Voltage (µv) 4 3 2 1 V DD =2.V V DD =.V Representative Part - -2 2 7 1 Ambient Temperature ( C) Input Offset Voltage (µv) 12 1 8 6 4 2-2 -. T A = +8 C T A = +2 C T A = -4 C.. 1. 1. 2. 2. 3. 3. 4. 4.. Common Mode Input Voltage (V) V DD =.V FIGURE 2-7: Input Offset Voltage vs. Ambient Temperature. FIGURE 2-1: Input Offset Voltage vs. Common Mode Input Voltage. Open-Loop Gain (db) 12 R L = 2 kω 1 8 Gain 6 Phase 4 2 9 4-4 -9-13 -18-2 -22.1.1 1 1 1 1k 1k 1k 1M Frequency (Hz) Open-Loop Phase ( ) Gain Bandwidth Product (khz) 16 14 GBWP 8 7 12 6 1 Phase Margin 8 4 6 3 4 2 2 V DD =.V 1 - -2 2 7 1 Ambient Temperature ( C) Phase Margin ( ) FIGURE 2-8: vs. Frequency. Open-Loop Gain and Phase FIGURE 2-11: Gain Bandwidth Product, Phase Margin vs. Ambient Temperature. Channel-to-Channel Separation (db) 14 13 12 11 1 9 Referred to Input 8 1.E+2 1 1.E+3 1k 1.E+4 1k 1.E+ 1k Frequency (Hz) Input Noise Voltage Density (nv/ Hz) 1 1 1 1.E-.1 1.E+ 1 1.E+ 1 1.E+ 1 1.E+ 1k 1.E+ 1k 1.E+ 1k 1 Frequency 1 2 (Hz) 3 4 FIGURE 2-9: Channel-to-Channel Separation (MCP67 and MCP69 only). FIGURE 2-12: vs. Frequency. Input Noise Voltage Density DS11177D-page 6 2 Microchip Technology Inc.
MCP66/7/8/9 Note: Unless otherwise indicated, V DD = +2.V to +.V, V SS = GND, T A =2 C, V CM =V DD /2, V DD /2, R L =1kΩ to V DD /2 and C L =6pF. Input Bias and Offset Currents (pa) 1 1 1 V DD =.V V CM = V DD.1 2 3 3 4 4 6 6 7 7 8 8 Ambient Temperature ( C) I B I OS Input Bias and Offset Currents (pa) 6 4 3 2 1-1 T A = +8 C V DD =.V.. 1. 1. 2. 2. 3. 3. 4. 4... Common Mode Input Voltage (V) I B I OS FIGURE 2-13: Input Bias Current, Input Offset Current vs. Ambient Temperature. FIGURE 2-16: Input Bias Current, Input Offset Current vs. Common Mode Input Voltage. DC Open-Loop Gain (db) 13 13 12 12 V DD =.V 11 11 V DD = 2.V 1 1 1.E+2 1 1.E+3 1k 1.E+4 1k 1.E+ 1k Load Resistance (Ω) DC Open-Loop Gain (db) 1 R L = 2 kω 14 13 12 11 1 9.. 1. 1. 2. 2. 3. 3. 4. 4... Power Supply Voltage (V) FIGURE 2-14: Load Resistance. DC Open-Loop Gain vs. FIGURE 2-17: DC Open-Loop Gain vs. Power Supply Voltage. CMRR and PSRR (db) 12 1 8 6 4 2 CMRR PSRR- PSRR+ CMRR and PSRR (db) 1 9 9 8 8 PSRR CMRR 1.E-1.1 1.E+ 1 1.E+1 1 1.E+2 1 1.E+3 1k 1.E+4 1k Frequency (Hz) 7 - -2 2 7 1 Ambient Temperature ( C) FIGURE 2-1: Frequency. CMRR, PSRR vs. FIGURE 2-18: Temperature. CMRR, PSRR vs. Ambient 2 Microchip Technology Inc. DS11177D-page 7
MCP66/7/8/9 Note: Unless otherwise indicated, V DD = +2.V to +.V, V SS = GND, T A =2 C, V CM =V DD /2, V DD /2, R L =1kΩ to V DD /2 and C L =6pF. Output Voltage Headroom; V DD V OH and V OL V SS (mv) 1 1 1 1 V DD - V OH, V DD = 2.V V OL - V SS, V DD = 2.V V DD - V OH, V DD =.V V OL - V SS, V DD =.V.1 1 1 1 Output Current (ma) Output Voltage Headroom; V DD V OH and V SS V OL (mv) 4 3 3 2 2 1 1 V DD V OH, V DD =.V V OL V SS, V DD =.V R L = kω V DD V OH, V DD = 2.V V OL V SS, V DD = 2.V - -2 2 7 1 Ambient Temperature ( C) FIGURE 2-19: Output Voltage Headroom vs. Output Current Magnitude. FIGURE 2-22: Output Voltage Headroom vs. Ambient Temperature at R L =kω. Maximum Output Voltage Swing (V) 1 1 V DD =.V V DD = 2.V.1 1.E+2 1 1.E+3 1k 1.E+4 1k 1.E+ 1k Frequency (Hz) Input and Output Voltages (V) 6 4 3 2 1-1 G = +2 V/V V DD =.V V IN Time (1 µs/div) FIGURE 2-2: Maximum Output Voltage Swing vs. Frequency. FIGURE 2-23: The MCP66/7/8/9 Show No Phase Reversal. Slew Rate (V/µs).12.1 Low to High.8.6 High to Low.4.2. - -2 2 7 1 Ambient Temperature ( C) Output Short Circuit Current Magnitude (ma) 2 2 1 1 +I SC, V DD =.V -I SC, V DD =.V +I SC, V DD = 2.V -I SC, V DD = 2.V - -2 2 7 1 Ambient Temperature ( C) FIGURE 2-21: Temperature. Slew Rate vs. Ambient FIGURE 2-24: Output Short Circuit Current Magnitude vs. Ambient Temperature. DS11177D-page 8 2 Microchip Technology Inc.
MCP66/7/8/9 Note: Unless otherwise indicated, V DD = +2.V to +.V, V SS = GND, T A =2 C, V CM =V DD /2, V DD /2, R L =1kΩ to V DD /2 and C L =6pF. Output Voltge (V). 4. 4. 3. 3. 2. 2. 1. 1... V DD =.V Time ( µs/div) Output Voltage (V). 4. 4. 3. 3. 2. 2. 1. 1... V DD =.V Time ( µs/div) FIGURE 2-2: Pulse Response. Large-signal, Non-inverting FIGURE 2-28: Pulse Response. Large-signal, Inverting V DD =.V R L = 2 kω Output Voltage (2 mv/div) Output Voltage (2 mv/div) Time ( µs/div) Time ( µs/div) FIGURE 2-26: Pulse Response. Small-signal, Non-inverting FIGURE 2-29: Response. Small-signal, Inverting Pulse Internal CS Switch Output (V) 3. 3. 2. 2. 1. 1... -. Amplifier Output Active CS Input High to Low Hysteresis CS Input Low to High V DD =.V Amplifier Output Hi-Z.. 1. 1. 2. 2. 3. 3. 4. 4.. CS Input Voltage (V) Output Voltage (V). 4. 4. 3. 3. 2. 2. 1. 1... Output Hi-Z G = +1 V/V R L = 1 kω to V SS Output Enabled Time ( µs/div) CS Output Hi-Z 1 1 - -1-1 -2-2 -3-3 Chip Select Voltage (V) FIGURE 2-27: (MCP68 only). Chip Select (CS) Hysteresis FIGURE 2-3: Amplifier Output Response Times vs. Chip Select (CS) Pulse (MCP68 only). 2 Microchip Technology Inc. DS11177D-page 9
MCP66/7/8/9 3. PIN DESCRIPTIONS Descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE. MCP66 (PDIP, SOIC, TSSOP) MCP66 (SOT-23-) MCP67 MCP68 MCP69 Symbol Description 6 1 1 6 1, A Output (op amp A) 2 4 2 2 2 V IN, V INA Inverting Input (op amp A) 3 3 3 3 3 V IN +, V INA + Non-inverting Input (op amp A) 7 4 7 4 V DD Positive Power Supply V INB + Non-inverting Input (op amp B) 6 6 V INB Inverting Input (op amp B) 7 7 B Output (op amp B) 8 C Output (op amp B) 9 V INC Inverting Input (op amp C) 1 V INC + Non-inverting Input (op amp C) 4 2 8 4 11 V SS Negative Power Supply 12 V IND + Non-inverting Input (op amp D) 13 V IND Inverting Input (op amp D) 14 D Output (op amp D) 8 CS Chip Select 1,, 8 1, NC No Internal Connection 3.1 Analog Outputs The output pins are low-impedance voltage sources. 3.2 Analog Inputs The non-inverting and inverting inputs are highimpedance CMOS inputs with low bias currents. 3.4 Digital Input The Chip Select (CS) pin is a Schmitt-triggered, CMOS logic input. It is used to place the MCP68 op amp in a Low-power mode, with the output(s) in a Hi-Z state. 3.3 Power Supply (V SS and V DD ) The positive power supply pin (V DD ) is 2.V to.v higher than the negative power supply pin (V SS ). For normal operation, the output pins are at voltages between V SS and V DD ; while the input pins are at voltages between V SS.3V and V DD +.3V. Typically, these parts are used in a single-supply (positive) configuration. In this case, V SS is connected to ground and V DD is connected to the supply. V DD will need a local bypass capacitor (typically.1 µf to.1 µf) within 2 mm of the V DD pin. These parts can share a bulk capacitor with nearby analog parts (typically 1 µf or larger) within 1 mm of the V DD pin. DS11177D-page 1 2 Microchip Technology Inc.
1 1 1 1 1 1 1 MCP66/7/8/9 4. APPLICATIONS INFORMATION The MCP66/7/8/9 family of op amps is manufactured using Microchip s state-of-the-art CMOS process These op amps are unity-gain stable and suitable for a wide range of general purpose applications. 4.1 Inputs The MCP66/7/8/9 op amps are designed to prevent phase reversal when the input pins exceed the supply voltages. Figure 2-23 shows the input voltage exceeding the supply voltage without any phase reversal. The inputs of the MCP66/7/8/9 op amps connect to a differential PMOS input stage. The Common Mode Input Voltage Range (V CMR ) includes ground in singlesupply systems (V SS ), but does not include V DD. This means that the amplifier input behaves linearly as long as the Common Mode Input Voltage (V CM ) is kept within the specified V CMR limits (V SS.3V to V DD 1.1V at +2 C). Input voltages that exceed the Absolute Maximum Voltage Range (V SS.3V to V DD +.3V) can cause excessive current to flow into or out of the input pins. Current beyond ±2 ma can cause reliability problems. Applications that exceed this rating must be externally limited with a resistor, as shown in Figure 4-1. linear region. To verify linear operation in this range, the large-signal DC Open-Loop Gain (A OL ) is measured at points inside the supply rails. The measurement must meet the specified A OL conditions in the specification table. 4.3 Capacitive Loads Driving large capacitive loads can cause stability problems for voltage-feedback op amps. As the load capacitance increases, the feedback loop s phase margin decreases and the closed-loop bandwidth is reduced. This produces gain-peaking in the frequency response, with overshoot and ringing in the step response. A unity-gain buffer (G = +1) is the most sensitive to capacitive loads, though all gains show the same general behavior. When driving large capacitive loads with these op amps (e.g., > 6 pf when G = +1), a small series resistor at the output (R ISO in Figure 4-2) improves the feedback loop s phase margin (stability) by making the output load resistive at higher frequencies. The bandwidth will be generally lower than the bandwidth with no capacitive load. MCP6X R ISO V IN C L V IN R IN FIGURE 4-1: Resistor (R IN ). R IN MCP6X ( Maximum expected V IN ) V DD ------------------------------------------------------------------------------ 2 ma V SS ( Minimum expected V IN ) R IN -------------------------------------------------------------------------- 2 ma 4.2 Rail-to-Rail Output Input Current-Limiting There are two specifications that describe the outputswing capability of the MCP66/7/8/9 family of op amps. The first specification (Maximum Output Voltage Swing) defines the absolute maximum swing that can be achieved under the specified load conditions. For instance, the output voltage swings to within 1 mv of the negative rail with a 2 kω load to V DD /2. Figure 2-23 shows how the output voltage is limited when the input goes beyond the linear region of operation. The second specification that describes the outputswing capability of these amplifiers (Linear Output Voltage Range) defines the maximum output swing that can be achieved while the amplifier still operates in its FIGURE 4-2: Output Resistor, R ISO stabilizes large capacitive loads. Figure 4-3 gives recommended R ISO values for different capacitive loads and gains. The x-axis is the normalized load capacitance (C L /G N ), where G N is the circuit s noise gain. For non-inverting gains, G N and the Signal Gain are equal. For inverting gains, G N is 1+ Signal Gain (e.g., -1 V/V gives G N =+2V/V). Recommended R ISO ( ) 1k 1k 1 1p G N = +1 G N = +2 G N +4 1p 1n 1n Normalized Load Capacitance; C L /G N (F) FIGURE 4-3: Recommended R ISO Values for Capacitive Loads. 2 Microchip Technology Inc. DS11177D-page 11
MCP66/7/8/9 After selecting R ISO for your circuit, double-check the resulting frequency response peaking and step response overshoot. Modify R ISO s value until the response is reasonable. Bench evaluation and simulations with the MCP66/7/8/9 SPICE macro model are helpful. 4.4 MCP68 Chip Select (CS) The MCP68 is a single op amp with Chip Select (CS). When CS is pulled high, the supply current drops to na (typ.) and flows through the CS pin to V SS. When this happens, the amplifier output is put into a highimpedance state. By pulling CS low, the amplifier is enabled. If the CS pin is left floating, the amplifier may not operate properly. Figure 1-1 shows the output voltage and supply current response to a CS pulse. 4. Supply Bypass With this family of operational amplifiers, the power supply pin (V DD for single-supply) should have a local bypass capacitor (i.e.,.1 µf to.1 µf) within 2 mm for good high-frequency performance. It also needs a bulk capacitor (i.e., 1 µf or larger) within 1 mm to provide large, slow currents. This bulk capacitor can be shared with other nearby analog parts. 4.6 PCB Surface Leakage In applications where low input bias current is critical, Printed Circuit Board (PCB) surface-leakage effects need to be considered. Surface leakage is caused by humidity, dust or other contamination on the board. Under low humidity conditions, a typical resistance between nearby traces is 1 12 Ω. A V difference would cause pa of current to flow, which is greater than the MCP66/7/8/9 family s bias current at 2 C (1 pa, typ.). The easiest way to reduce surface leakage is to use a guard ring around sensitive pins (or traces). The guard ring is biased at the same voltage as the sensitive pin. An example of this type of layout is shown in Figure 4-4. V IN - V IN + V SS 1. Non-inverting Gain and Unity-gain Buffer: a) Connect the non-inverting pin (V IN +) to the input with a wire that does not touch the PCB surface. b) Connect the guard ring to the inverting input pin (V IN ). This biases the guard ring to the common mode input voltage. 2. Inverting Gain and Transimpedance Gain (convert current to voltage, such as photo detectors) amplifiers: a) Connect the guard ring to the non-inverting input pin (V IN +). This biases the guard ring to the same reference voltage as the op amp (e.g., V DD /2 or ground). b) Connect the inverting pin (V IN ) to the input with a wire that does not touch the PCB surface. 4.7 Application Circuits 4.7.1 LOW-SIDE BATTERY CURRENT SENSOR The MCP66/7/8/9 op amps can be used to sense the load current on the low-side of a battery using the circuit in Figure 4-. In this circuit, the current from the power supply (minus the current required to power the MCP66) flows through a sense resistor (R SEN ), which converts it to voltage. This is gained by the the amplifier and resistors, R G and R F. Since the non-inverting input of the amplifier is at the load s negative supply (V LM ), the gain from R SEN to is R F /R G. 2.V to.v = V LM + I L R ( R SEN F R G ) R G kω R F kω R SEN MCP66 To Load 1Ω (V LM ) I L To Load (V LP ) FIGURE 4-4: for Inverting Gain. Guard Ring Example Guard Ring Layout FIGURE 4-: Sensor. Low Side Battery Current Since the input bias current and input offset voltage of the MCP66 are low, and the input is capable of swinging below ground, there is very little error generated by the amplifier. The quiescent current is very low, which helps conserve battery power. The rail-to-rail output makes it possible to read very low currents. DS11177D-page 12 2 Microchip Technology Inc.
MCP66/7/8/9 4.7.2 PHOTODIODE AMPLIFIERS Sensors that produce an output current and have high output impedance can be connected to a transimpedance amplifier. The transimpedance amplifier converts the current into voltage. Photodiodes are one sensor that produce an output current. The key op amp characteristics that are needed for these circuits are: low input offset voltage, low input bias current, high input impedance and an input common mode range that includes ground. The low input offset voltage and low input bias current support a very low voltage drop across the photodiode; this gives the best photodiode linearity. Since the photodiode is biased at ground, the op amp s input needs to function well both above and below ground. 4.7.2.1 Photo-Voltaic Mode Figure 4-6 shows a transimpedance amplifier with a photodiode (D 1 ) biased in the Photo-voltaic mode (V across D 1 ), which is used for precision photodiode sensing. As light impinges on D 1, charge is generated, causing a current to flow in the reverse bias direction of D 1. The op amp s negative feedback forces the voltage across the D 1 to be nearly V. Resistor R 2 converts the current into voltage. Capacitor C 2 limits the bandwidth and helps stabilize the circuit when D 1 s junction capacitance is large. = I D1 R 2 C 2 R 2 operate at a much higher speed. This reverse bias also increases the dark current and current noise, however. Resistor R 2 converts the current into voltage. Capacitor C 2 limits the bandwidth and helps stabilize the circuit when D 1 s junction capacitance is large. Light I D1 VB V B < = I D1 R 2 D 1 FIGURE 4-7: Photodiode (in Photoconductive mode) and Transimpedance Amplifier. 4.7.3 TWO OP AMP INSTRUMENTATION AMPLIFIER The two op amp instrumentation amplifier shown in Figure 4-8 serves the function of taking the difference of two input voltages, level-shifting it and gaining it to the output. This configuration is best suited for higher gains (i.e., gain > 3 V/V). The reference voltage (V REF ) is typically at mid-supply (V DD /2) in a single-supply environment. C 2 R 2 V DD MCP66 Light I D1 V DD R 2R 1 1 V = OUT ( V 1 V 2 ) 1 + ------ + --------- + V R R 2 G REF D 1 MCP66 R G R 1 R 2 R 2 R 1 V REF FIGURE 4-6: Photodiode (in Photo-voltaic mode) and Transimpedance Amplifier. 4.7.2.2 Photo-Conductive Mode Figure 4-6 shows a transimpedance amplifier with a photodiode (D 1 ) biased in the Photo-conductive mode (D 1 is reverse biased), which is used for high-speed applications. As light impinges on D 1, charge is generated, causing a current to flow in the reverse bias direction of D 1. Placing a negative bias on D 1 significantly reduces its junction capacitance, which allows the circuit to V 2 V 1 FIGURE 4-8: Amplifier. ½ MCP67 ½ MCP67 Two op amp Instrumentation The key specifications that make the MCP66/7/8/9 family appropriate for this application circuit are low input bias current, low offset voltage and high commonmode rejection. 2 Microchip Technology Inc. DS11177D-page 13
MCP66/7/8/9 4.7.4 THREE OP AMP INSTRUMENTATION AMPLIFIER A classic, three op amp instrumentation amplifier is illustrated in Figure 4-9. The two input op amps provide differential signal gain and a common mode gain of +1. The output op amp is a difference amplifier, which converts its input signal from differential to a single ended output; it rejects common mode signals at its input. The gain of this circuit is simply adjusted with one resistor (R G ). The reference voltage (V REF ) is typically referenced to mid-supply (V DD /2) in single-supply applications. 4.7. PRECISION GAIN WITH GOOD LOAD ISOLATION In Figure 4-1, the MCP66 op amps, R 1 and R 2 provide a high gain to the input signal (V IN ). The MCP66 s low offset voltage makes this an accurate circuit. The MCP61 is configured as a unity-gain buffer. It isolates the MCP66 s output from the load, increasing the high-gain stage s precision. Since the MCP61 has a higher output current, with the two amplifiers being housed in separate packages, there is minimal change in the MCP66 s offset voltage due to loading effect. = 2R ( V V ) 1 2 1 2 + --------- R 4 ----- + V R G R 3 REF ½ V 2 MCP67 V IN V = IN ( 1 + R 2 R 1 ) MCP66 MCP61 R 3 R 4 R 1 R 2 R G R 2 R 2 MCP66 FIGURE 4-1: Load Isolation. Precision Gain with Good R 3 R 4 V REF V 1 ½ MCP67 FIGURE 4-9: Three op amp Instrumentation Amplifier. DS11177D-page 14 2 Microchip Technology Inc.
MCP66/7/8/9. DESIGN TOOLS Microchip provides the basic design tools needed for the MCP66/7/8/9 family of op amps..1 SPICE Macro Model The latest SPICE macro model for the MCP66/7/8/9 op amps is available on our web site at www.microchip.com. This model is intended to be an initial design tool that works well in the op amp s linear region of operation at room temperature. See the model file for information on its capabilities. Bench testing is a very important part of any design and cannot be replaced with simulations. Also, simulation results using this macro model need to be validated by comparing them to the data sheet specifications and characteristic curves..2 FilterLab Software The FilterLab software is an innovative tool that simplifies analog active-filter (using op amps) design. It is available free of charge from our web site at www.microchip.com. The FilterLab software tool provides full schematic diagrams of the filter circuit with component values. It also outputs the filter circuit in SPICE format, which can be used with the macro model to simulate actual filter performance. 2 Microchip Technology Inc. DS11177D-page 1
MCP66/7/8/9 6. PACKAGING INFORMATION 6.1 Package Marking Information -Lead SOT-23- Example: XXNN SB2 8-Lead PDIP (3 mil) XXXXXXXX XXXXXNNN YYWW Example: MCP66 I/P^^26 e3 4 8-Lead SOIC (1 mil) XXXXXXXX XXXXYYWW NNN Example: MCP66 SN^^4 e3 26 8-Lead TSSOP Example: XXXX YYWW NNN 66 I4 26 Legend: XX...X Customer-specific information Y Year code (last digit of calendar year) YY Year code (last 2 digits of calendar year) WW Week code (week of January 1 is week 1 ) NNN e3 Alphanumeric traceability code Pb-free JEDEC designator for Matte Tin (Sn) * This package is Pb-free. The Pb-free JEDEC designator ( e3 ) can be found on the outer packaging for this package. Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. DS11177D-page 16 2 Microchip Technology Inc.
MCP66/7/8/9 Package Marking Information (Continued) 14-Lead PDIP (3 mil) (MCP69) Example: XXXXXXXXXXXXXX XXXXXXXXXXXNNN YYWW MCP69 I/P^^26 e3 4 14-Lead SOIC (1 mil) (MCP69) Example: XXXXXXXXXX XXXXXXXXXX YYWWNNN MCP69 I/SL^^3 e 426 14-Lead TSSOP (MCP69) Example: XXXXXXXX YYWW NNN 69IST 4 26 2 Microchip Technology Inc. DS11177D-page 17
MCP66/7/8/9 -Lead Plastic Small Outline Transistor (OT) (SOT23) E E1 p B p1 D n 1 α c A A2 β L φ A1 Units Dimension Limits Number of Pins n Pitch p Outside lead pitch (basic) p1 Overall Height A Molded Package Thickness A2 Standoff A1 Overall Width E Molded Package Width E1 Overall Length D Foot Length L Foot Angle φ Lead Thickness c Lead Width B Mold Draft Angle Top α Mold Draft Angle Bottom β * Controlling Parameter Significant Characteristic MIN.3.3..12.9.11.14.4.14 INCHES* NOM.38.7.46.43.3.11.64.116.18.6.17 MAX.7.1.6.118.69.122.22 1.8.2 1 1 MILLIMETERS MIN NOM.9 1.9.9 1.18.9 1.1..8 2.6 2.8 1. 1.63 2.8 2.9.3.4.9.1.3.43 Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed.1 (.24mm) per side. JEDEC Equivalent: MO-178 Drawing No. C4-91 MAX 1.4 1.3.1 3. 1.7 3.1. 1.2. 1 1 DS11177D-page 18 2 Microchip Technology Inc.
MCP66/7/8/9 8-Lead Plastic Dual In-line (P) 3 mil (PDIP) E1 2 D n 1 α E A A2 c A1 L β eb B1 B p Units INCHES* MILLIMETERS Dimension Limits MIN NOM MAX MIN NOM MAX Number of Pins n 8 8 Pitch p.1 2.4 Top to Seating Plane A.14.1.17 3.6 3.94 4.32 Molded Package Thickness A2.11.13.14 2.92 3.3 3.68 Base to Seating Plane A1.1.38 Shoulder to Shoulder Width E.3.313.32 7.62 7.94 8.26 Molded Package Width E1.24.2.26 6.1 6.3 6.6 Overall Length D.36.373.38 9.14 9.46 9.78 Tip to Seating Plane L.12.13.13 3.18 3.3 3.43 Lead Thickness c.8.12.1.2.29.38 Upper Lead Width B1.4.8.7 1.14 1.46 1.78 Lower Lead Width B.14.18.22.36.46.6 Overall Row Spacing eb.31.37.43 7.87 9.4 1.92 Mold Draft Angle Top α 1 1 1 1 Mold Draft Angle Bottom β 1 1 1 1 * Controlling Parameter Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed.1 (.24mm) per side. JEDEC Equivalent: MS-1 Drawing No. C4-18 2 Microchip Technology Inc. DS11177D-page 19
MCP66/7/8/9 8-Lead Plastic Small Outline (SN) Narrow, 1 mil (SOIC) E E1 p 2 D B n 1 4 h α c A A2 φ β L A1 Units INCHES* MILLIMETERS Dimension Limits MIN NOM MAX MIN NOM MAX Number of Pins n 8 8 Pitch p. 1.27 Overall Height A.3.61.69 1.3 1. 1.7 Molded Package Thickness A2.2.6.61 1.32 1.42 1. Standoff A1.4.7.1.1.18.2 Overall Width E.228.237.244.79 6.2 6.2 Molded Package Width E1.146.14.17 3.71 3.91 3.99 Overall Length D.189.193.197 4.8 4.9. Chamfer Distance h.1.1.2.2.38.1 Foot Length L.19.2.3.48.62.76 Foot Angle φ 4 8 4 8 Lead Thickness c.8.9.1.2.23.2 Lead Width B.13.17.2.33.42.1 Mold Draft Angle Top α 12 1 12 1 Mold Draft Angle Bottom β 12 1 12 1 * Controlling Parameter Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed.1 (.24mm) per side. JEDEC Equivalent: MS-12 Drawing No. C4-7 DS11177D-page 2 2 Microchip Technology Inc.
MCP66/7/8/9 8-Lead Plastic Thin Shrink Small Outline (ST) 4.4 mm (TSSOP) E E1 p 2 D B n 1 A α c φ A1 A2 β L Units INCHES MILLIMETERS* Dimension Limits MIN NOM MAX MIN NOM MAX Number of Pins n 8 8 Pitch p.26.6 Overall Height A.43 1.1 Molded Package Thickness A2.33.3.37.8.9.9 Standoff A1.2.4.6..1.1 Overall Width E.246.21.26 6.2 6.38 6. Molded Package Width E1.169.173.177 4.3 4.4 4. Molded Package Length D.114.118.122 2.9 3. 3.1 Foot Length L.2.24.28..6.7 Foot Angle φ 4 8 4 8 Lead Thickness c.4.6.8.9.1.2 Lead Width B.7.1.12.19.2.3 Mold Draft Angle Top α 1 1 Mold Draft Angle Bottom β 1 1 * Controlling Parameter Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed. (.127mm) per side. JEDEC Equivalent: MO-13 Drawing No. C4-86 2 Microchip Technology Inc. DS11177D-page 21
MCP66/7/8/9 14-Lead Plastic Dual In-line (P) 3 mil (PDIP) E1 D 2 n 1 α E A A2 c L β eb A1 B B1 p Units INCHES* MILLIMETERS Dimension Limits MIN NOM MAX MIN NOM MAX Number of Pins n 14 14 Pitch p.1 2.4 Top to Seating Plane A.14.1.17 3.6 3.94 4.32 Molded Package Thickness A2.11.13.14 2.92 3.3 3.68 Base to Seating Plane A1.1.38 Shoulder to Shoulder Width E.3.313.32 7.62 7.94 8.26 Molded Package Width E1.24.2.26 6.1 6.3 6.6 Overall Length D.74.7.76 18.8 19. 19.3 Tip to Seating Plane L.12.13.13 3.18 3.3 3.43 Lead Thickness c.8.12.1.2.29.38 Upper Lead Width B1.4.8.7 1.14 1.46 1.78 Lower Lead Width B.14.18.22.36.46.6 Overall Row Spacing eb.31.37.43 7.87 9.4 1.92 Mold Draft Angle Top α 1 1 1 1 Mold Draft Angle Bottom * Controlling Parameter Significant Characteristic β 1 1 1 1 Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed.1 (.24mm) per side. JEDEC Equivalent: MS-1 Drawing No. C4- DS11177D-page 22 2 Microchip Technology Inc.
MCP66/7/8/9 14-Lead Plastic Small Outline (SL) Narrow, 1 mil (SOIC) E E1 p D 2 B n 1 4 h α c A A2 β L φ A1 Units INCHES* MILLIMETERS Dimension Limits MIN NOM MAX MIN NOM MAX Number of Pins n 14 14 Pitch p. 1.27 Overall Height A.3.61.69 1.3 1. 1.7 Molded Package Thickness A2.2.6.61 1.32 1.42 1. Standoff A1.4.7.1.1.18.2 Overall Width E.228.236.244.79.99 6.2 Molded Package Width E1.1.14.17 3.81 3.9 3.99 Overall Length D.337.342.347 8.6 8.69 8.81 Chamfer Distance h.1.1.2.2.38.1 Foot Length L.16.33..41.84 1.27 Foot Angle φ 4 8 4 8 Lead Thickness c.8.9.1.2.23.2 Lead Width B.14.17.2.36.42.1 Mold Draft Angle Top α 12 1 12 1 Mold Draft Angle Bottom β 12 1 12 1 * Controlling Parameter Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed.1 (.24mm) per side. JEDEC Equivalent: MS-12 Drawing No. C4-6 2 Microchip Technology Inc. DS11177D-page 23
MCP66/7/8/9 14-Lead Plastic Thin Shrink Small Outline (ST) 4.4 mm (TSSOP) p E E1 D B n 2 1 A α c φ β L A1 A2 Units Dimension Limits Number of Pins n Pitch p Overall Height A Molded Package Thickness A2 Standoff A1 Overall Width E Molded Package Width E1 Molded Package Length D Foot Length L Foot Angle φ Lead Thickness c Lead Width B1 Mold Draft Angle Top α Mold Draft Angle Bottom β * Controlling Parameter Significant Characteristic MIN.33.2.246.169.193.2.4.7 INCHES NOM 14.26.3.4.21.173.197.24 4.6.1 MAX.43.37.6.26.177.21.28 8.8.12 1 1 MIN.8. 6.2 4.3 4.9..9.19 MILLIMETERS* NOM 14.6 Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed. (.127mm) per side. JEDEC Equivalent: MO-13 Drawing No. C4-87.9.1 6.38 4.4..6 4.1.2 MAX 1.1.9.1 6. 4..1.7 8.2.3 1 1 DS11177D-page 24 2 Microchip Technology Inc.
MCP66/7/8/9 APPENDIX A: REVISION HISTORY Revision D (February 2) The following is the list of modifications: 1. Added Section 3. Pin Descriptions. 2. Updated Section 4. Applications Information. 3. Added Section 4.3 Capacitive Loads 4. Updated Section. Design Tools to include FilterLab and to point to the latest SPICE macro model.. Corrected and updated Section 6. Packaging Information. 6. Added Section Appendix A: Revision History. Revision C (January 21) Revision B (May 2) Revision A (January 2) Original Release of this Document. 2 Microchip Technology Inc. DS11177D-page 2
MCP66/7/8/9 NOTES: DS11177D-page 26 2 Microchip Technology Inc.
MCP66/7/8/9 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO. X /XX Device Temperature Range Package Device MCP66 = Single Op Amp MCP66T = Single Op Amp Tape and Reel (SOIC, TSSOP) MCP67 = Dual Op Amp MCP67T = Dual Op Amp Tape and Reel (SOIC, TSSOP) MCP68 = Single Op Amp with CS MCP68T = Single Op Amp with CS Tape and Reel (SOIC, TSSOP) MCP69 = Quad Op Amp MCP69T = Quad Op Amp Tape and Reel (SOIC, TSSOP) Temperature Range I = -4 C to +8 C Package OT = Plastic SOT-23, -lead P = Plastic DIP (3 mil Body), 8-lead & 14-lead SN = Plastic SOIC (1 mil Body), 8-lead SL = Plastic SOIC (1 mil Body), 14-lead ST = Plastic TSSOP, 8-lead & 14-lead Examples: a) MCP66-I/P: Industrial Temperature, 8LD PDIP package. b) MCP66-I/SN: Industrial Temperature, 8LD SOIC package. c) MCP66T-I/SN: Tape and Reel, Industrial Temperature, 8LD SOIC package. d) MCP66-I/ST: Industrial Temperature, 8LD TSSOP package. e) MCP66-I/OT: Industrial Temperature, LD SOT-23 package. f) MCP66T-I/OT: Tape and Reel, Industrial Temperature, LD SOT-23 package. a) MCP67-I/P: Industrial Temperature, 8LD PDIP package. b) MCP67T-I/P: Industrial Temperature, 8LD PDIP package. a) MCP68-I/SN: Industrial Temperature, 8LD SOIC package. b) MCP68T-I/SN: Tape and Reel, Industrial Temperature, 8LD SOIC package. a) MCP69-I/P: Industrial Temperature, 14LD PDIP package. b) MCP69T-I/P: Industrial Temperature, 14LD PDIP package. 2 Microchip Technology Inc. DS11177D-page 27
MCP66/7/8/9 NOTES: DS11177D-page 28 2 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices: Microchip products meet the specification contained in their particular Microchip Data Sheet. Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. Microchip is willing to work with the customer who is concerned about the integrity of their code. Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as unbreakable. Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act. Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WAR- RANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dspic, KEELOQ, microid, MPLAB, PIC, PICmicro, PICSTART, PRO MATE, PowerSmart, rfpic, and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. AmpLab, FilterLab, Migratable Memory, MXDEV, MXLAB, PICMASTER, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, dspicdem, dspicdem.net, dspicworks, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzylab, In-Circuit Serial Programming, ICSP, ICEPIC, MPASM, MPLIB, MPLINK, MPSIM, PICkit, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, rflab, rfpicdem, Select Mode, Smart Serial, SmartTel, Total Endurance and WiperLock are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. 2, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received ISO/TS-16949:22 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona and Mountain View, California in October 23. The Company s quality system processes and procedures are for its PICmicro 8-bit MCUs, KEELOQ code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip s quality system for the design and manufacture of development systems is ISO 91:2 certified. 2 Microchip Technology Inc. DS11177D-page 29
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