NJM358C. Low power dual operational amplifier
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- Horatio Stephens
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1 Low power dual operational amplifier Features Internally frequencycompensated Large DC voltage gain : db typ. Wide bandwidth (unity gain ) :.MHz typ. Low Operating Current : 5 ua/ch typ. Low input bias current: : na typ. Low input offset voltage :.5mV typ. Input commonmode voltage range includes negative rails Differential input voltage range equal to the power supply voltage Large output voltage swing : V to (V CC +.5V) Internal ESD protection Human body model (HBM) ±V typ. Wide power supply range: Single supply: +V to +V Dual supplies: ±.5V to ±5V Description The NJM58C consist of two independent, highgain, internally frequencycompensated opamps, specifically designed to operate from a single power supply over a wide range of voltages. The lowpower supply drain is independent of the magnitude of the power supply voltage. Application areas include transducer amplifiers, DC gain blocks and all the conventional opamp circuits, which can now be more easily implemented in single power supply systems. For example, these circuits can be directly supplied with the standard +5V, which is used in logic systems and will easily provide the required interface electronics with no additional power supply. In linear mode, the input commonmode voltage range includes ground and the output voltage can also swing to ground, even though operated from only a single power supply voltage. NJM58CG Output Inverting Input NonInverting Input (SOP8) Vcc Pin connections 4 (Top View) NJM58CV ( SSOP8 ) Vcc + Output Inverting Input NonInverting Input. Schematic diagram Figure. Schematic diagram (/ NJM58C) Vcc + V CC 6μA C C 4μA μa Q5 Q6 Inverting inverting Input Input NonInverting noninverting Input Input Q Q Q Q4 Q Q Q7 Q R SC Output Output Q Q8 Q9 5μA GND Vcc ver.9
2 . Absolute maximum ratings and operating conditions Table. Absolute maximum ratings (Tamb=5ºC) Symbol Parameter RATINGS Unit V CC Supply voltage (V CC + V CC ) V V IN Input voltage () Vcc. to Vcc + V V o Output Terminal Input Voltage Vcc. to Vcc + +. V V ID Differential input voltage ± V I IN Input current () 5mA in DC or 5mA in AC (duty cycle = %, T=s) ma T stg Storage temperature range 65 to +5 ºC T j Maximum junction temperature 5 ºC P D Power Dissipation SOP8 :69 (4) (5) SSOP8 :4 (4) 54 (5) mw θja Thermal resistance junction to ambient () SOP8 :8 (4) (5) SSOP8 :9 (4) (5) ºC /W ψjt Thermal resistance junction to top surface of IC package () SOP8 : 49 (4) 4 (5) SSOP8 : 46 (4) 45 (5) ºC /W +. Input voltage is the voltage should be allowed to apply to the input terminal independent of the magnitude of V CC The normal amplifier operation input voltage is within Common Mode Input Voltage Range specified in the Electrical characteristics.. This input current only exists when the voltage at any of the input leads is driven negative. It is due to the collectorvase junction of the input PNP transistor becoming forwardbiased and thereby acting as input diode clamp. In addition to this diode action, there is NPN parasitic action on the IC chip. This transistor action can cause the output voltages of the Opamps to go to the V CC voltage level (or to ground for a large overdrive) for the time during which an input is driven negative.. Shortcircuit can cause excessive heating and destructive dissipation. Values are typical. 4. EIA/JEDEC STANDARD Test board (76. x 4. x.6mm, layers, FR4) mounting 5. EIA/JEDEC STANDARD Test board (76. x 4. x.6mm, 4layers, FR4) mounting. Operating conditions Table. Operating conditions (Tamb=5 C) Symbol Parameter Value Unit V CC Supply voltage (V + CC V CC ) to V T oper Operating freeair temperature range 4 to +85 ºC ver.9
3 4. Electrical characteristics Table. V CC + = +5V, V CC = V, T amb = +5 C, (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit Input offset voltage () V io T amb = 5 ºC T amb 7 ºC (5) mv DV io Input offset voltage drift (5) ºC T amb 7 ºC 7 µv/ºc I io DI io I ib A vd Input offset current T amb = 5 ºC T amb 7 ºC (5) Input offset current drift (5) ºC T amb 7 ºC pa/ºc Input bias current () T amb = 5 5 na ºC T amb 7 ºC (5) Large signal voltage gain (V CC + = +5V, RL=kΩ, Vo=.4V to.4v) T amb = na V/mV SVR I CC V icm ºC T amb 7 ºC (5) 5 Supply voltage rejection ratio(v + CC = 5V to V, Rs<kΩ) T amb = 5 65 ºC T amb 7 ºC (5) 65 Supply current, all amp, no load ºC T amb 7 ºC (5), V + CC = 5V.7. ºC T amb 7 ºC (5), V + CC = V Input common mode voltage range(v + CC = +V () ) T amb = 5 ºC V + CC.5 ºC T amb 7 ºC (5) V + CC db ma V ver.9
4 Table. V CC + = +5V, V CC = V, T amb = +5 C, (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit CMR I source I sink V OH V OL SR GBP THD e n V O/V O Common mode rejection ratio(r S < kω) T amb = 5 7 ºC T amb 7 ºC (5) 6 Output current source V CC + = 5V, V O = +V, V id = +V Output sink current db 4 ma V CC + = 5V, V o = +V, V id = V ma V CC + = 5V, V o = +.V, V id = V 5 µa High level output voltage(v CC + = V) T amb = 5,R L = kω 6 7 ºC T amb 7 ºC (5),R L = kω 6 T amb = 5,R L = kω 7 8 ºC T amb 7 ºC (5),R L = kω 7 Low level output voltage T amb = 5,R L = kω 5 ºC T amb 7 ºC (5),R L = kω Slew rate V CC + = 5V, V i=.5 to V, R L = kω, C L = pf, unity gain Gain bandwidth product V CC + = V, f = khz, V in=mv, R L = kω, C L = pf Total harmonic distortion f = khz, A V=dB, R L = kω, V O = V pp, C L = pf Equivalent input noise voltage f = khz, R S=Ω, V CC + = V V mv.6 V/µs. MHz. % nv/ Hz Channel separation (4) db khz < f < khz. V O =.4V, R S=Ω, 5V < V CC + < V, < V ic < V CC +.5V.. The direction of the input current is out of the IC.. The input commonmode voltage of either input signal voltage should not be allowed to go negative by more than.v. The upper end of the commonmode voltage range is V CC +.5V, but either or both inputs can go to +V without damage. 4. Due to the proximity of external components, ensure that stray capacitance between these external parts dose not cause coupling. 5. This parameter is not % test. 4 ver.9
5 TYPICAL CHARACTERISTICS 5 Gain/Phase vs. Frequency V CC + /V CC =±.5V, Gv=4dB, Ta=5ºC Maximum Output Voltage Swing vs. Frequency V + CC =5V, Ta=5ºC 5 Voltage Gain [db] 4 Gain Phase Phase [deg] Maximum Output Voltage Swing V OPP [V PP ] k k k M M Frequency [Hz] k k k M Frequency [Hz] Pulse Response V CC + =5V, R L =kω, C L =pf, Ta=5ºC 5 Small signal Pulse Response V CC + =V, G V =db, C L =5pF, Voltage [.5V/div] INPUT OUTPUT Input/Output Voltage [mv] Output Input Time [5μs/div] 5 Time [μs/div] Maximum Output Voltage [V] Maximum Output Voltage vs. Load Resistance V CC + =V, Gv=open, R L to V CC Ta=4 C Ta=4 C, 5ºC, 85ºC k k k Load Resistance [Ω] Maximum Output Voltage [V] Maximum Output Voltage vs. Load Resistance V CC + =5V, Gv=open, R L to V CC Ta=4 C Ta=4 C, 5ºC, 85ºC k k k Load Resistance [Ω] ver.9 5
6 TYPICAL CHARACTERISTICS. Maximum Output Voltage vs. Load Resistance V CC + =V, Gv=open, R L to V CC 5. Maximum Output Voltage vs. Output Current V CC + =5V Maximum Output Voltage [V] Ta=4 C Ta=4 C, 5ºC, 85ºC Maximum Output Voltage [V] Isource Ta=85ºC Ta=85ºC Ta=4ºC Isink Ta=5ºC Ta=4ºC Ta=5ºC k k k Load Resistance [Ω] k Output Current [ma] Output Voltage vs. Output Sink Current V CC + =5V, Ta=5ºC 5 Input Voltage Range vs. Supply Voltage Output Voltage [V]. Input Voltage [V] 5 Negative Positive. k k k Output Sink Current[μA] ±5 ± ±5 Supply VoltageV + /V [V].4 Supply Current vs. Supply Voltage R L =open.4 Supply Current vs. Temperature R L =open. Ta=85ºC. V CC + =+V Supply Current [ma] Ta=4ºC Ta=5ºC Supply Current [ma] V CC + =V V CC + =5V Supply Voltage V CC + [V] Ambient Temperature [ºC] 6 ver.9
7 TYPICAL CHARACTERISTICS Input Offset Voltage vs. Supply Voltage V CM =V CC + / Input Offset Voltage vs. Temperature V CM =V CC + / Input Offset Voltage [mv] Ta=4 C Input Offset Voltage [mv] V CC + =5V V CC + =V V CC + =V Supply Voltage V CC + [V] Ambient Temperature [ C] Input Offset Voltage vs. CommonMode Input Voltage V CC + =V Input Offset Voltage vs. CommonMode Input Voltage V CC + =5V Input Offset Voltage [mv] Ta=4 C Input Offset Voltage [mv] Ta=4 C CommonMode Input Voltage [V] 4 5 CommonMode Input Voltage [V] Input Offset Voltage vs. CommonMode Input Voltage V CC + =V 5 Input Bias Current vs. Temperature V CM =V CC + / Input Offset Voltage [mv] Ta=4 C Input Bias Current [na] 4 V CC + =5V V CC + =V V CC + =V CommonMode Input Voltage [V] Ambient Temperature [ºC] ver.9 7
8 TYPICAL CHARACTERISTICS 6 Voltage Gain vs. Supply Voltage V CC =V, Ta=5 C 4 Gain vs. Temperature V CC + =5V, R L =kω, V O =V to V 4 R L =kω Voltage Gain [db] R L =kω Voltage Gain [db] Supply Voltage V CC + [V] Ambient Temperature [ C] 4 CMR vs. Frequency V CC + /V CC =±7.5V, 4 Large Signal Voltage Gain vs. Frequency V CC + =V CommonMode Rejection Ratio [db] Large Signal Voltage Gain [db] k k k M Frequency [Hz]. k k k M Frequency [Hz] 8 ver.9
9 APPLICATION Improvement of Crossover Distortion Equivalent circuit at the output stage NJM94C,in its static state ( No in and output condition ) when design,q U being biassed by constant current ( break down beam ) yet,q L stays OFF. While using with both power source mode,the crossover distortion might occur instantly when Q L ON. There might be cases when application for amplifier of audio signals,not only distortion but also the apparent frequency bandwidth being narrowed remarkably. It is adjustable especially when using both power source mode,constantly to use with higher current on Q U than the load current ( including feedback current ),and then connect the pulldown resister R P at the part between output and V pins. ver.9 9
10 PACKAGE DIMENSIONS SOP8 4.9±..9±. 6.±..7.55±..±..4±.7. S.5 M.75±.75 S.85±.45 ~ 7 SSOP ~ º MAX..±..5±. 4.4±. 6.4±..5± ±.. M [CAUTION] The specifications on this databook are only given for information, without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. ver.9
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