Micropower, SOT23, Rail-to-Rail, Fixed-Gain, GainAmp/Open-Loop Op Amps

Transcription

1 96; Rev ; /99 Micropower, SOT, Rail-to-Rail, General Description The MAX7 MAX78 GainAmp op amp family combines low-cost Rail-to-Rail op amps with precision internal gain-setting resistors. Factory-trimmed on-chip resistors decrease design size, cost, and layout, and provide.% gain accuracy. Fixed inverting gains from -.5V/V to -V/V or noninverting gains from +.5V/V to +V/V are available. These devices operate from a single +.5V to +5.5V supply and consume just µa. GainAmp amplifiers are optimally compensated for each gain version, achieving gain bandwidth (GBW) products up to MHz (A V = +5V/V to +V/V). High-voltage fault protection withstands ±7V at either input without damage or excessive current draw (MAX7/MAX75 only). Two versions are available in this amplifier family. The MAX76/MAX77/MAX78 are single/dual/quad open-loop, unity-gain-stable op amps, and the MAX7/MAX75 are single/dual fixed-gain op amps. The input common-mode voltage range of the open-loop amplifiers extends from 5mV below the negative supply to within.v of the positive supply. The GainAmp outputs can swing rail-to-rail and drive a kω load while maintaining excellent DC accuracy (MAX7/MAX75 only). The amplifiers are stable for capacitive loads up to pf. For space-critical applications, the MAX7/MAX76 are available in space-saving SOT packages. Applications Portable Battery-Powered Equipment Instruments, Terminals, and Bar-Code Readers Keyless Entry Photodiode Preamps Smart-Card Readers Infrared Receivers for Remote Controls Low-Side Current-Sense Amplifiers Features Internal Gain-Setting Resistors in SOT Packages (MAX7).% Gain Accuracy (RF/RG) (MAX7/75) 5 Standard Gains Available (MAX7/75) Open-Loop, Unity-Gain-Stable Op Amps (MAX76/77/78) Rail-to-Rail Outputs Drive kω Load (MAX7/75) +.5V to +5.5V Single Supply µa Supply Current (MAX7/75) Up to MHz GBW Product Fault-Protected Inputs Withstand ±7V (MAX7/75) pa max Input Bias Current (MAX76/77/78) Stable with Capacitive Loads up to pf with No Isolation Resistor PART TOP VIEW Ordering Information TEMP. RANGE MAX7 EUK-T - C to +7 C 5 SOT ** MAX7 ESA - C to +7 C 8 SO Ordering Information continued at end of data sheet. Note: Insert the desired gain code in the blank to complete the part number (see the Gain Selector Guide). **See the Gain Selector Guide for a list of preferred gains and top marks. Pin Configurations/ Functional Diagrams MAX7 IN+ IN- SOT Pin Configurations continued at end of data sheet. PIN- PACKAGE TOP MARK MAX7 MAX78 OUT 5 Gain Selector Guide appears at end of data sheet. Typical Operating Circuit appears at end of data sheet. P. GainAmp is a trademark of Maxim Integrated Products. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. Maxim Integrated Products For free samples & the latest literature: or phone For small orders, phone

2 Micropower, SOT, Rail-to-Rail, MAX7 MAX78 ABSOLUTE MAXIMUM RATINGS Supply Voltages ( to )...-.V to +6V Voltage Inputs (IN_) MAX76/MAX77/MAX78...( +.V) to ( -.V) MAX7/MAX75...±7V Output Short-Circuit Duration to Either Supply (OUT_).... Continuous Continuous Power Dissipation (T A = +7 C) 5-Pin SOT (derate 7.mW/ C above +7 C)...57mW -Pin TSSOP (derate 6.mW/ C above +7 C)...5mW 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. ELECTRICAL CHARACTERISTICS MAX7/MAX75 8-Pin µmax (derate.mw/ C above +7 C)...mW 8-Pin SO (derate 5.88mW/ C above +7 C)...7mW -Pin SO (derate 8.mW/ C above +7 C)...667mW Operating Temperature Range...- C to +85 C Junction Temperature...+5 C Storage Temperature Range...5 C to +5 C Lead Temperature (soldering, sec)...+ C ( = +.5V to +5.5V, =, V IN+ = V IN- = /, R L = to /, T A = T MIN to T MAX, unless otherwise noted. Typical values are at = +5V and T A = +5 C.) (Note ) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range Guaranteed by PSRR test V Supply Current (per amplifier) I CC = 5V 7 55 = V 5 µa Input Offset Voltage V OS R L = MΩ..5 mv Input Offset Voltage Drift. µv/ C Input Bias Current (Note ) I IN+_.8 pa Inverting Input Resistance R IN_ A V < +5V/V A V +5V/V 8 kω Noninverting Input Resistance R IN_+ MΩ Positive Input Voltage Range IN_+ Guaranteed by functional test (Note ) Negative Input Voltage Range IN_- Guaranteed by functional test (Note ) ±5 V Power-Supply Rejection Ratio PSRR =.5V to 5.5V 7 96 db Closed-Loop Output Impedance R OUT. Ω Output Short-Circuit Current Shorted to 5 Shorted to - ma R L = MΩ - V OH.5.5 V OL -..5 Output Voltage Swing (Note ) R L = kω - V OH 5 5 V OL - 8 mv R L = kω - V OH V OL - 6 V

3 Micropower, SOT, Rail-to-Rail, ELECTRICAL CHARACTERISTICS MAX7/MAX75 (continued) ( = +.5V to +5.5V, =, V IN+ = V IN- = /, R L = to /, T A = T MIN to T MAX, unless otherwise noted. Typical values are at = +5V and T A = +5 C.) (Note ) Input Noise Current Density f = 5kHz 5 fa/ Hz Capacitive Load Stability C LOAD No sustained oscillations 5 pf DC Gain Accuracy db Bandwidth PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Power-Up Time Output settling to % 9 ms Slew Rate SR V OUT = V step V/ms Settling Time (to.%) V OUT = V step 6 µs Input Voltage Noise Density e n f = 5kHz (Note 5) 5 nv/ Hz BW (db) ( + 5mV) < V OUT < ( - 5mV), R L = MΩ (Note 6) A V = +.5V/V A V = +V/V A V = +5V/V A V = +V/V A V = +5V/V T A = +5 C T A = T MIN to T MAX % khz MAX7 MAX78 ELECTRICAL CHARACTERISTICS MAX76/MAX77/MAX78 ( = +.5V to +5.5V, =, V IN+ = V IN- = /, R L = to /, T A = T MIN to T MAX, unless otherwise noted. Typical values are at = +5V and T A = +5 C.) (Note ) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range Guaranteed by PSRR test V = 5V 5 6 Supply Current (per amplifier) I CC µa = V 55 Input Offset Voltage V OS R L = MΩ..5mV mv Input Offset Voltage Drift.5µV µv/ C Input Bias Current (Note ) I IBIAS pa Input Offset Current I OS ±. pa Common-Mode Input Voltage Range I VR Guaranteed by CMRR Power-Supply Rejection Ratio PSRR =.5V to 5.5V 7 95 db Closed-Loop Output Impedance R OUT A V = +V/V. Ω Output Short-Circuit Current Shorted to.5 Shorted to ma.5v < V OUT < ( -.V), R L = MΩ 8 7 Large-Signal Voltage Gain A VOL.5V < V OUT < ( -.V), R L = kω 8 95 db.5v < V OUT < ( -.V), R L = 5kΩ.5 -. Common-Mode Rejection Ratio CMRR ( -.V) V CM -.5V 7 95 db 8 9 V

4 Micropower, SOT, Rail-to-Rail, MAX7 MAX78 ELECTRICAL CHARACTERISTICS MAX76/MAX77/MAX78 (continued) ( = +.5V to +5.5V, =, V IN+ = V IN- = /, R L = to /, T A = T MIN to T MAX, unless otherwise noted. Typical values are at = +5V and T A = +5 C.) (Note ) PARAMETER Output Voltage Swing Gain-Bandwidth Product SYMBOL V OH /V OL GBW R L = MΩ R L = kω R L = 5kΩ CONDITIONS - V OH V OL V OH 5 V OL V OH V OL - MIN TYP MAX Slew Rate SR V OUT = V step 9..5 Settling Time (to.%) V OUT = V step 69 µs Input Voltage Noise Density e n f = 5kHz Input Noise Current Density f = 5kHz. Capacitive Load Stability C LOAD No sustained oscillations, A V = +V/V Power-Up Time Output settling to % UNITS mv khz V/ms nv/ Hz fa/ Hz pf ms Note : All devices are % production tested at T A = +5 C. All temperature limits are guaranteed by design. Note : Guaranteed by design. Note : The input common-mode range for IN_+ is guaranteed by a functional test. A similar test is done on the IN_- input. See the Applications Information section for more information on the input voltage range of the GainAmps. Note : For A V = -.5V/V and A V = -.5V/V, the output voltage swing may be limited by the input voltage range. Note 5: Includes noise from on-chip resistors. Note 6: The gain accuracy test is performed with the GainAmps in the noninverting configuration. The output voltage swing is limited by the input voltage range for certain gains and supply voltage conditions. For situations where the output voltage swing is limited by the valid input range, the output limits are adjusted accordingly. Typical Operating Characteristics ( = +5.V, R L = kω to /, T A = +5 C, unless otherwise noted.) MAX7/MAX75 SMALL-SIGNAL GAIN vs. FREQUENCY V OUT = mvp-p MAX7-8 tocc- SMALL-SIGNAL GAIN vs. FREQUENCY V OUT = mvp-p MAX7-8 tocc- SMALL-SIGNAL GAIN vs. FREQUENCY V OUT = mvp-p MAX7-8 tocc5 - - A V = +.5V/V A V = +.5V/V - - A V = +V/V A V = +.5V/V - - A V = +9V/V A V = +5V/V k k k M k k k M k k k M

5 Micropower, SOT, Rail-to-Rail, Typical Operating Characteristics ( = +5.V, R L = kω to /, T A = +5 C, unless otherwise noted.) k SMALL-SIGNAL GAIN vs. FREQUENCY V OUT = mvp-p A V = +V/V k k A V = +V/V MAX7-8 toc M k MAX7/MAX75 SMALL-SIGNAL GAIN vs. FREQUENCY V OUT = mvp-p A V = +5V/V k k A V = +5V/V MAX7-8 toc5 M k SMALL-SIGNAL GAIN vs. FREQUENCY V OUT = mvp-p A V = +V/V k k A V = +5V/V MAX7-8 toc6 M MAX7 MAX78 LARGE-SIGNAL GAIN vs. FREQUENCY V OUT = Vp-p MAX7-8 toc7 LARGE-SIGNAL GAIN vs. FREQUENCY V OUT = Vp-p MAX7-8 toc8 LARGE-SIGNAL GAIN vs. FREQUENCY V OUT = Vp-p MAX7-8 toc9 - - A V = +.5V/V A V = +.5V/V - - A V = +V/V A V = +.5V/V - - A V = +9V/V A V = +5V/V k k k M k k k M k k k M LARGE-SIGNAL GAIN vs. FREQUENCY V OUT = Vp-p MAX7-8 toc LARGE-SIGNAL GAIN vs. FREQUENCY V OUT = Vp-p MAX7-8 toc LARGE-SIGNAL GAIN vs. FREQUENCY V OUT = Vp-p MAX7-8 toc - - A V = +V/V A V = +V/V - - A V = +5V/V A V = +5V/V - - A V = +V/V A V = +5V/V k k k M k k k M k k k M 5

6 Micropower, SOT, Rail-to-Rail, MAX7 MAX78 Typical Operating Characteristics (continued) ( = +5.V, R L = kω to /, T A = +5 C, unless otherwise noted.) THD (db) TOTAL HARMONIC DISTORTION vs. FREQUENCY V OUT = Vp-p A V = +V/V A V = +V/V k k k A V = +.5V/V MAX7-8 toc5 THD (db) MAX7/MAX75 TOTAL HARMONIC DISTORTION vs. FREQUENCY V OUT = Vp-p A V = +5V/V k k k A V = +5V/V MAX7-8 toc6 THD (db) TOTAL HARMONIC DISTORTION vs. VOLTAGE SWING f = khz A V = +V/V A V = +V/V VOLTAGE SWING (Vp-p) A V = +.5V/V MAX7-8 toc7 - TOTAL HARMONIC DISTORTION vs. VOLTAGE SWING f = khz MAX7-8 toc8 VOLTAGE NOISE DENSITY vs. FREQUENCY MAX7-8 toc9 THD (db) - -7 A V = +5V/V A V = +5V/V VOLTAGE NOISE (nv/ Hz) A V = +V/V A V = +V/V A V = +.5V/V VOLTAGE SWING (Vp-p) k k k M M VOLTAGE NOISE (nv/ Hz) VOLTAGE NOISE DENSITY vs. FREQUENCY A V = +5V/V A V = +5V/V MAX7-8 toc CURRENT NOISE DENSITY (fa/ Hz) CURRENT NOISE DENSITY vs. FREQUENCY MAX7 TOC k k k M M. k k k M M 6

7 Micropower, SOT, Rail-to-Rail, Typical Operating Characteristics (continued) ( = +5.V, R L = kω to /, T A = +5 C, unless otherwise noted.) INPUT 5mV/div A V = +.5V/V SMALL-SIGNAL PULSE RESPONSE MAX7/MAX75 MAX7 TOC6 INPUT 5mV/div A V = +.5V/V LARGE-SIGNAL PULSE RESPONSE MAX7 TOC5 MAX7 MAX78 5mV/div A V = +V/V 5mV/div A V = +V/V 5mV/div A V = +5V/V 5mV/div A V = +5V/V 5mV/div A V = +V/V 5mV/div A V = +V/V 5mV/div A V = +5V/V 5mV/div A V = +5V/V 5mV/div A V = +5V/V 5mV/div A V = +5V/V µs/div µs/div 7

8 Micropower, SOT, Rail-to-Rail, MAX7 MAX78 Typical Operating Characteristics (continued) ( = +5.V, R L = kω to /, T A = +5 C, unless otherwise noted.) PSR (db) POWER-SUPPLY REJECTION vs. FREQUENCY k k k MAX7 TOC IMPEDANCE (Ω) k. IMPEDANCE vs. FREQUENCY k k k M MAX7TOC SWING (mv) V OL - VOLTAGE SWING vs. R LOAD R LOAD (kω) - V OH MAX7 TOC INPUT OFFSET VOLTAGE (µv) INPUT OFFSET VOLTAGE vs. TEMPERATURE = 5.5V - =.5V TEMPERATURE ( C) MAX7/5-toc5 INPUT BIAS CURRENT (pa) INPUT BIAS CURRENT vs. TEMPERATURE 6 - = 5.5V 5 MAX7/75 - =.5V - - MAX76/77/ TEMPERATURE ( C) - = 5.5V - =.5V MAX7/5-toc6 VOLTAGE (mv) V OH AND V OL vs. TEMPERATURE ( - =.5V) V OH, R L = kω V OH, R L = kω V OL, R L = kω V OL, R L = kω TEMPERATURE ( C) V OH, R L = kω V OL, R L = kω MAX7/5-toc7 VOLTAGE (mv) V OH AND V OL vs. TEMPERATURE ( - = 5.5V) V OH, R L = kω V OL, R L = kω V OL, R L = kω V OH, R L = kω TEMPERATURE ( C) V OH, R L = kω V OL, R L = kω MAX7/5-toc8 SUPPLY CURRENT (µa) SUPPLY CURRENT vs. TEMPERATURE - = 5.5V - =.V - =.V - =.5V TEMPERATURE ( C) MAX7/5-toc9 8

9 Micropower, SOT, Rail-to-Rail, Typical Operating Characteristics (continued) ( = +5.V, R L = kω to /, T A = +5 C, unless otherwise noted.) SMALL-SIGNAL GAIN vs. FREQUENCY k k k M M MAX76/7/8 toc MAX76/MAX77/MAX LARGE-SIGNAL GAIN vs. FREQUENCY k k k M M MAX76-8 toc VOLTAGE NOISE (nv/ Hz) k VOLTAGE NOISE vs. FREQUENCY k k k M M MAX76-8 toc MAX7 MAX78 CURRENT NOISE (pa/ Hz) CROSSTALK (db). CURRENT NOISE vs. FREQUENCY k k k M M MAX78 ALL HOSTILE CROSSTALK vs. FREQUENCY THREE AMPLIFIERS DRIVEN, 5 ONE MEASURED k k k MAX76-8 toc MAX76-8 toc7 M THD (db) TOTAL HARMONIC DISTORTION vs. FREQUENCY A V = +V/V k k k PHASE GAIN AND PHASE vs. FREQUENCY GAIN - k k k M M MAX76-8 toc8 9 MAX76-8 toc PHASE (degrees) CROSSTALK (db) CMR (db) k MAX77 CROSSTALK vs. FREQUENCY k k COMMON-MODE REJECTION vs. FREQUENCY MAX76-8 toc6 M k k k M M MAX76-8 toc9

10 Micropower, SOT, Rail-to-Rail, MAX7 MAX78 MAX7/MAX76 SOT 5 SO 6 7, 5, 8 PIN MAX75 MAX77 µmax/so, 7 Detailed Description Maxim s GainAmp fixed-gain amplifiers combine a lowcost rail-to-rail op amp with internal gain-setting resistors. Factory-trimmed on-chip resistors provide.% gain accuracy while decreasing design size, cost, and layout. There are two versions in this amplifier family: single/dual/quad open-loop, unity-gain-stable devices (MAX76/MAX77/MAX78), and single/dual fixedgain devices (MAX7/MAX75). All amplifiers feature rail-to-rail outputs and drive a kω load while maintaining excellent DC accuracy. Open-Loop Op Amps The single/dual/quad MAX76/MAX77/MAX78 are low-power, open-loop op amps with rail-to-rail outputs. These devices are compensated for unity-gain stability and feature a GBW product of khz. The commonmode range extends from 5mV below the negative rail to within.v of the positive rail. These high-performance op amps serve as the core for this family of GainAmp fixed-gain amplifiers. Although the db bandwidth will not correspond to that of a fixed-gain amplifier in higher gain configurations, these open-loop op amps can be used to prototype designs., 5, 6 8 MAX78 SO/TSSOP, 7, 8,, 5,,, 6, 9, NAME OUT_ IN_+ IN- IN_- N.C. IN+ Amplifier Output Inverting Amplifier Input Positive Supply Figure. Internal Gain-Setting Resistors Pin Description FUNCTION Negative Supply or Ground Noninverting Amplifier Input No Connection. Not internally connected. A V = - A V = + Internal Gain-Setting Resistors Maxim s proprietary laser trimming techniques allow RF/RG values (Figure ) that produce many different gain configurations. These GainAmp fixed-gain amplifiers feature a negative-feedback resistor network that is laser trimmed to provide a gain-setting feedback ratio (RF/RG) with.% typical accuracy. The standard op amp pinouts allow the GainAmp fixed-gain amplifiers to plug directly into existing board designs, easily replacing op amps-plus-resistor gain blocks. OUT

11 Micropower, SOT, Rail-to-Rail, GainAmp Bandwidth GainAmp fixed-gain amplifiers feature factory-trimmed precision resistors to provide fixed inverting gains from -.5V/V to -V/V or noninverting gains from +.5V/V to +V/V. The op amp core is decompensated strategically over the gain-set options to maximize bandwidth. Open-loop decompensation increases GBW product, ensuring that usable bandwidth is maintained with increasing closed-loop gains. A GainAmp with a fixed gain of A V = +5V/V has a db bandwidth of khz. By comparison, a unity-gain-stable op amp configured for A V = +5V/V would yield a db bandwidth of only 8kHz. Decompensation is performed at five intermediate gain sets, as shown in the Gain Selector Guide. High-Voltage (±7V) Input Fault Protection The MAX7/MAX75 family includes ±7V input fault protection. For normal operation, see the input voltage range specification in the Electrical Characteristics. Overdriven inputs up to ±7V will not cause output phase reversal. A back-to-back SCR structure at the input pins allows either input to safely swing ±7V relative to (Figure ). Additionally, the internal op amp inputs are diode clamped to both supply rails for the protection of sensitive input stage circuitry. Current through the clamp diodes is limited by a 5kΩ resistor at the noninverting input, and by RG at the inverting input. An IN+ or IN- fault voltage as high as ±7V causes less than.5ma to flow through the input pin, protecting both the GainAmp and the signal source from damage. Applications Information GainAmp fixed-gain amplifiers offer a precision, fixedgain amplifier in a small package that can be used in a variety of circuit board designs. GainAmp fixed-gain amplifiers can be used in many op amp circuits that use resistive negative feedback to set gain, and do not require other connections to the op amp inverting input. Both inverting and noninverting op amp configurations can be implemented easily using a GainAmp. GainAmp Input Voltage Range The MAX7/MAX75 combine both an op amp and gain-setting feedback resistors on the same IC. The inverting input voltage range is different from the noninverting input voltage range because the inverting input pin is connected to the RG input series resistor. Just as with a discrete design, take care not to saturate the inputs/output of the core op amp to avoid signal distortions or clipping. MAX7 MAX78 IN- 7V SCR OUT IN+ 5k 7V SCR MAX7 MAX75 NOTE: INPUT STAGE PROTECTION INCLUDES TWO 7V SCRs AND TWO DIODES AT THE INPUT STAGE. Figure. Input Protection

12 Micropower, SOT, Rail-to-Rail, MAX7 MAX78 GainAmp Signal Coupling and Configurations Common op amp configurations include both noninverting and inverting amplifiers. Figures 6 show various single- and dual-supply circuit configurations. In singlesupply systems, use a resistor-divider to bias the noninverting input. A lowpass filter capacitor from the op amp input to ground (Figure 5) prevents high-frequency power-supply noise from coupling into the op amp input. Dual-supply systems can have ground-referenced signals DC-coupled into the inverting or noninverting inputs. Supply Bypassing and Board Layout All devices in this GainAmp family operate from a +.5V to +5.5V single supply or from ±.5V to ±.75V dual supplies. For single-supply operation, bypass the power supply with a.µf capacitor to ground. For dual supplies, bypass each supply to ground. Bypass with capacitors as close to the device as possible to minimize lead inductance and noise. A printed circuit board with a low-inductance ground plane is recommended. Capacitive-Load Stability Driving large capacitive loads can cause instability in most low-power, rail-to-rail output amplifiers. The fixedgain amplifiers of this GainAmp family are stable with capacitive loads up to pf. Stability with higher capacitive loads can be improved by adding an isolation resistor in series with the op amp output, as shown in Figure 7. This resistor improves the circuit s phase margin by isolating the load capacitor from the amplifier s output. In Figure 8, a pf capacitor is driven with a Ω isolation resistor exhibiting some overshoot but no oscillation. Figures 9 and show the typical smallsignal pulse responses of GainAmp fixed-gain amplifiers with 7pF and pf capacitive loads and no isolation resistor V IN MAX7 V OUT = - V IN ( ) Figure. Dual-Supply, DC-Coupled Inverting Amplifier.µF V IN MAX7 V OUT = - VIN ( ) Figure 5. Single-Supply, AC-Coupled Inverting Amplifier MAX7 MAX7 V IN VOUT = VIN (+ ) V IN V OUT = - (VIN ) Figure. Single-Supply, DC-Coupled Inverting Amplifier with Negative Input Voltage Figure 6. Dual-Supply, DC-Coupled Noninverting Amplifier

13 Micropower, SOT, Rail-to-Rail, MAX7 R ISO INPUT C L Figure 7. Dual-Supply, Capacitive-Load-Driving Circuit R L A V = +5V/V 5mV/div A V = +5V/V 5mV/div INPUT Figure 8. Small-Signal/Large-Signal Transient Response with Excessive Capacitive Load and Isolation Resistor MAX7 MAX78

14 Micropower, SOT, Rail-to-Rail, MAX7 MAX78 INPUT 5mV/div A V = +.5V/V 5mV/div A V = +V/V INPUT 5mV/div A V = +.5V/V 5mV/div A V = +V/V 5mV/div A V = +5V/V 5mV/div A V = +5V/V 5mV/div A V = +V/V 5mV/div A V = +V/V 5mV/div A V = +5V/V 5mV/div A V = +5V/V 5mV/div A V = +5V/V 5mV/div A V = +5V/V µs/div µs/div Figure 9. GainAmp Small-Signal Pulse Response (C L = pf, R L = kω) Figure. GainAmp Small-Signal Pulse Response (C L = 9pF, R L = kω)

15 Micropower, SOT, Rail-to-Rail, GAIN CODE AB INVERTING GAIN (V/V).5 AC.5 AD AE.5 AF.5 AG AH.5 AJ AK AL 5 AM 6 AN 8 AO 9 BA BB.5 BC 5 BD BE BF 5 BG BH BJ 9 BK 5 BL 6 BM 79 BN 99 CA NONINVERTING GAIN (V/V) db BW (khz).5 Gain Selector Guide TOP MARK ADJB.5 6 ADJC ADJD.5 7 ADJE.5 5 ADJG ADJF ADJH 9 ADJI 6 7 ADJK ADJL 5 ADJM 79 ADJO ADJJ ADJN ADJP 5 ADJQ ADJR 5 ADJS 6 89 ADJU ADJT ADJV 5 ADJW 6 66 ADJY ADJX ADJZ ADKA 8 ADKB MAX7 MAX78 Note: Bold indicates preferred gains. These gain versions are available as samples and in small quantities. 5

16 - + Micropower, SOT, Rail-to-Rail, MAX7 MAX78 MAX7 SO MAX OUT IN+ Pin Configurations/Functional Diagrams MAX76 5 SOT MAX MAX76 N.C. 8 N.C. N.C. OUT N.C. OUTB INB- OUTA INA- INA+ TOP VIEW N.C. IN- IN+ IN- IN+ OUTA INA- INA+ 7 V - CC 6 OUT 5 N.C. SO -+ IN- OUTB INB- OUTA INA- INA+ MAX78 OUTD -+ IND- -+ IND+ 5 INB+ 5 INB+ INB+ 5 INC+ µmax/so µmax/so INC- INB OUTB 7 8 OUTC SO/TSSOP 6

17 Micropower, SOT, Rail-to-Rail, Ordering Information (continued) PART TEMP. RANGE IN- PIN- PACKAGE TOP MARK MAX75 EUA - C to +7 C 8 µmax MAX75 ESA - C to +7 C 8 SO MAX76EUK-T - C to +7 C 5 SOT ** MAX76ESA - C to +7 C 8 SO MAX77EUA - C to +7 C 8 µmax MAX77ESA - C to +7 C 8 SO MAX78EUD - C to +7 C TSSOP MAX78ESD - C to +7 C SO Note: Insert the desired gain code in the blank to complete the part number (see the Gain Selector Guide). **See the Gain Selector Guide for a list of preferred gains and top marks. Chip Information TRANSISTOR COUNTS MAX7: 8 MAX77: MAX75: 6 MAX78: MAX76: 8 IN+ Typical Operating Circuit +5V MAX7.µF MAX7 MAX78.µF OUT INPUT.µF 7

18 Micropower, SOT, Rail-to-Rail, MAX7 MAX78 Package Information SOT5L.EPS 8

19 Micropower, SOT, Rail-to-Rail, Package Information (continued) TSSOP.EPS MAX7 MAX78 9

20 Micropower, SOT, Rail-to-Rail, MAX7 MAX78 Package Information (continued) SOICN.EPS 8LUMAXD.EPS 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. Maxim Integrated Products, San Gabriel Drive, Sunnyvale, CA Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.