EVALUATION KIT AVAILABLE Broadband, Two-Output, Low-Noise Amplifier for TV Tuner Applications MAX2130. Maxim Integrated Products 1

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1 9-86; Rev ; 8/ EVALUATION KIT AVAILABLE Broadband, Two-Output, Low-Noise General Description The broadband, low-distortion, low-noise, two-output amplifier performs preamp, loop-out, and buffer functions in TV tuner applications. The device integrates functions typically achieved with discrete components into the space-saving 8-pin µmax-ep package. The provides a gain of +db with a noise figure less than.db over the MHz to 878MHz frequency range. The features an externally adjustable bias control, set with a single resistor, that allows the user to meet minimum linearity requirements while reducing current consumption. The device operates from a +V single supply and only requires 9mA of supply current when nominally biased. Applications DVB-T Digital Broadcast Receivers Digital/Terrestrial TV Tuners Set-Top Boxes Cable Modems Analog TV Tuners Pin Configuration appears at end of data sheet. Features +V Single-Supply Operation MHz to 878MHz Operating Frequency Range Guaranteed 7.dB (min) Input Return Loss Over Frequency Range Performance at I CC = 9mA (R BIAS = kω) db Gain.8dB Noise Figure +7.dBm Input IP +7dBm Input IP +.7dBm Input db Compression Point Loop-Out Amplifier Performance at I CC = 9mA (R BIAS = kω) 8.7dB Gain.dB Noise Figure +7dBm Input IP +9dBm Input IP -.dbm Input db Compression Point Programmable Linearity vs. Supply Current Ordering Information PART TEMP RANGE PIN-PACKAGE EUA - C to +8 C 8 µmax-ep* *Exposed paddle Typical Application Circuit V CC CHOKE MURATA BLMAS pf pf V CC μf OPTIONAL: DYNAMIC LINEARITY ADJUSTMENT CIRCUIT DAC R ADJ pf INPUT.V 7pF.μF V CC IN BIAS OUT.μF OUTPUT V ADJ R BIAS kω OUT.μF LOOP-OUT OUTPUT Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at , or visit Maxim s website at

2 ABSOLUTE MAXIMUM RATINGS V CC to...-.v to +6V BIAS, OUT to...-. to (V CC +.V) IN Input Power...+dBm OUT to...-.v to +6V OUT Short-Circuit Duration...Continuous Continuous Power Dissipation (T A = +7 C) 8-Pin µmax-ep (derate.mw/ C above +7 C)...W Operating Temperature Range...- C to +8 C Junction Temperature...+ C Storage Temperature Range...-6 C to + C Lead Temperature (soldering, s)...+ C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. CAUTION! ESD SENSITIVE DEVICE DC ELECTRICAL CHARACTERISTICS (V CC = +.7V to +.V, T A = - C to +8 C, R BIAS = kω ±%; no input signals applied. Typical values are at V CC = +V, T A = + C, unless otherwise noted.) PARAMETER CONDITIONS MIN TYP MAX UNITS Supply Voltage.7. V Supply Current T A = + C 9 R BIAS = kω 9 BIAS = unconnected ma AC ELECTRICAL CHARACTERISTICS ( EV kit, V CC = +.7V to +.V, RBIAS = kω ±%, f IN = MHz, Z O = 7Ω. Typical values are at V CC = +V, T A = + C, unless otherwise noted.) (Note ) PARAMETER CONDITIONS MIN TYP MAX UNITS LOW-NOISE AMPLIFIER () Operating Frequency Range 878 MHz Gain (Note )..6 db Gain Flatness T A = - C to +8 C (Note ).8 db Noise Figure.8. db Input db Compression Point V CC = +.V (Note ). Inp ut Thi r d - Or d er Inter cep t P oi nt (Note ) 7. dbm Input Second-Order Intercept Point.7 dbm (Note ) 7 dbm IN Return Loss (Notes, 6) db OUT Return Loss f IN = MHz to 878M H z 8.7 db Maximum Load for Stable Operation Any load OUT to IN Isolation (Note ) 8 db

3 AC ELECTRICAL CHARACTERISTICS (continued) ( EV kit, V CC = +.7V to +.V, RBIAS = kω ±%, f IN = MHz, Z O = 7Ω. Typical values are at V CC = +V, T A = + C, unless otherwise noted.) (Note ) PARAMETER CONDITIONS MIN TYP MAX UNITS Operating Frequency Range 878 MHz Gain (Note ) db Noise Figure..6 db Input db Compression -. Point V CC = +.V (Note ) -.7 Input Third-Order Intercept Point dbm (Note ) 7 dbm Input Second-Order Intercept Point (Note ) 9 dbm OUT Return Loss f IN = MHz to 878M H z.6 db Maximum Load for Stable Operation Any load OUT to IN Isolation (Note ). 7 db OUT to OUT Isolation (Note ).. db Note : Specifications are guaranteed by design and characterization, except for gain which is production tested. Note : Specifications are guaranteed over the operating frequency range. Note : Operation possible with V CC = +.V. See Typical Operating Characteristics. Note : Two tones at MHz and 6MHz, -dbm per tone. Note : Two tones at MHz and MHz, -dbm per tone. Note 6: Output load has worst-case 6dB return loss. ( EV kit, V CC = +V, R BIAS = kω ±%, T A = + C, unless otherwise noted.) SUPPLY CURRENT (ma) SUPPLY CURRENT vs. TEMPERATURE TEMPERATURE ( C) toc SUPPLY CURRENT (ma) SUPPLY CURRENT vs. R BIAS Typical Operating Characteristics toc GAIN (db) GAIN vs. FREQUENCY R BIAS = kω 6 8 toc

4 Typical Operating Characteristics (continued) ( EV kit, V CC = +V, R BIAS = kω ±%, T A = + C, unless otherwise noted.) GAIN (db) T A = +8 C GAIN vs. FREQUENCY R BIAS = kω T A = + C T A = + C 6 8 T A = - C T A = +8 C T A = - C toc GAIN (db) GAIN vs. FREQUENCY R BIAS = kω 6 8 toc NOISE FIGURE (db) NOISE FIGURE vs. FREQUENCY T A = +8 C T A = + C 6 8 T A = - C toc6 6 NOISE FIGURE vs. FREQUENCY T A = +8 C toc7... NOISE FIGURE vs. R BIAS toc8 INPUT PdB vs. TEMPERATURE toc9 NOISE FIGURE (db) T A = + C T A = - C NOISE FIGURE (db)..... INPUT PdB (dbm) TEMPERATURE ( C) INPUT PdB (dbm) INPUT PdB vs. R BIAS toc INPUT IP (dbm) INPUT IP vs. TEMPERATURE toc INPUT IP (dbm) INPUT IP vs. R BIAS 8MHz MHz 6MHz toc TEMPERATURE ( C)

5 Typical Operating Characteristics (continued) ( EV kit, V CC = +V, R BIAS = kω ±%, T A = + C, unless otherwise noted.) INPUT IP vs. R BIAS MHz toc INPUT IP vs. TEMPERATURE - 8 INPUT IP vs. R BIAS 6MHz toc INPUT IP (dbm) 8MHz 6MHz INPUT IP (dbm) INPUT IP (dbm) MHz 8MHz TEMPERATURE ( C) INPUT IP (dbm) 8 INPUT IP vs. R BIAS 6MHz MHz toc ISOLATION (db) OUT TO IN ISOLATION vs. FREQUENCY OUT TO OUT OUT TO IN toc7 RETURN LOSS (db) IN PORT RETURN LOSS vs. FREQUENCY Z O = 7Ω toc8 8MHz RETURN LOSS (db) OUT PORT RETURN LOSS vs. FREQUENCY Z O = 7Ω toc9 RETURN LOSS (db) OUT PORT RETURN LOSS vs. FREQUENCY Z O = 7Ω toc

6 PIN NAME FUNCTION Pin Description V CC Supply Voltage Input. Bypass with a pf capacitor in parallel with a 7pF capacitor as close to the pin as possible. (See Typical Application Circuit.) IN BIAS, 6, 7, EP OUT Broadband Input to Low-Noise Amplifier and Loop-Out Amplifier. Internally matched to 7Ω. Requires.μF DC-blocking capacitor. (See Typical Application Circuit.) Bias-Setting Resistor Connection. Connect a resistor, R BIAS, from BIAS to to set the linearity and supply current of the and the loop-out amplifier. Ground. Connect to ground plane with a low-inductance connection. Solder exposed paddle evenly to the board groundplane. Output of Loop-Out Amplifier. Requires a.μf DC-blocking capacitor. (See Typical Application Circuit.) 8 OUT Open-Collector Output of Low-Noise Amplifier. Requires a pullup inductor to V CC, as well as a.μf DC-blocking capacitor. (See Typical Application Circuit.) Detailed Description The is a broadband, high-gain, low-distortion low-noise amplifier () with two outputs intended for operation over the MHz to 878MHz frequency range. The device operates from a +V supply and features externally adjustable bias control circuitry that allows minimum linearity requirements to be met while reducing current consumption. Input The IN port is a broadband 7Ω input that provides a guaranteed minimum input return loss of 7.dB (allowing for : VSWR at output) across the MHz to 878MHz frequency range. AC-couple the IN port with a.µf DC-blocking capacitor. Outputs The OUT port is a broadband, 7Ω, open-collector output for the. It requires a pullup inductor to V CC for proper biasing, as well as a.µf DC-blocking capacitor. See the Applications Information section for proper inductor selection. The OUT port is a broadband, 7Ω output for the loopout amplifier. The loop-out amplifier is internally biased and does not require a pullup inductor. AC-couple the OUT port with a.µf DC-blocking capacitor. Bias Circuitry The linearity and supply current for both amplifiers are externally programmable with a single resistor, R BIAS, from BIAS to. A nominal resistor value of kω sets an input IP of +7.dBm, an input IP of +7dBm, and a supply current of 9mA. Decrease the resistor value to improve linearity at the cost of increased supply current. Increase the resistor value to decrease supply current and degrade linearity. Use resistor values greater than kω. Gain is not significantly affected by the R BIAS value. Applications Information Inductor Selection The OUT port of the requires a pull-up inductor to V CC for proper biasing. The exact value of the inductor is not important as long as it has broadband impedance >Ω (<Ω) at MHz across the MHz to 878MHz frequency band. Table is a list of recommended inductors. Table. OUT Pullup Inductor Recommended Components PART NUMBER BLMAS BLMA7SG BLMASG BLMASG MANUFACTURER Murata Murata Murata Murata 6

7 Dynamic Linearity Adjustment The and loop-out amplifier linearity can be dynamically adjusted by varying the amount of current sourced by the BIAS port. The BIAS port is internally biased to.v. A resistor, R BIAS, connected from BIAS to ground sets the bias current. An additional resistor, R ADJ, placed from the BIAS port to an external voltage source, such as a digital-to-analog converter (DAC), varies the current sourced by the BIAS port. Choosing R ADJ = R BIAS = kω and varying the voltage of the DAC from ground to.v effectively varies the resistance seen from the BIAS port from kω to an open circuit. See Typical Application Circuit. The DAC output voltage, V ADJ, required to set an equivalent resistance to ground, R EQ, seen by the BIAS port, can be calculated with the following equation: V ADJ =.V - (R BIAS V BIAS ) / R EQ where R ADJ = R BIAS, V BIAS =.V, R EQ kω. Power-Supply Bypassing Proper voltage-supply bypassing is essential for highfrequency circuit stability. Bypass the V CC pin with a pf capacitor in parallel with a 7pF capacitor, located as close to the V CC pin as possible. Refer to the EV kit for additional information. TOP VIEW Pin Configuration TRANSISTOR COUNT: 7 Chip Information V CC 8 OUT IN BIAS 7 6 OUT μmax-ep 7

8 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to 8L, μmax, EXP PAD.EPS -7 C Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 8 Maxim Integrated Products, San Gabriel Drive, Sunnyvale, CA Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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