MAX4174/5, MAX4274/5, MAX4281/2/4 19-1407 Rev 3 8/99 SOT23, Rail-to-Rail, Fixed-Gain GainAmps/Open-Loop Op Amps General Description Features The MAX4174/MAX4175/MAX4274/MAX4275 Gain- GainAmp Family Provides Internal Precision Amp family combines a low-cost Rail-to-Rail op amp Gain-Setting Resistors in SOT23 (MAX4174/5) with precision internal gain-setting resistors and V / 2 CC 0.1% Gain Accuracy (R /R ) (MAX4174/5, F G biasing. Factory-trimmed on-chip resistors decrease MAX4274/5) design size, cost, and layout, and provide 0.1% gain 54 Standard Gains Available (MAX4174/5, accuracy. Fixed inverting gains from -0.25V/V to MAX4274/5) -100V/V or noninverting gains from +1.25V/V to +101V/V are available. These devices operate from a Open-Loop Unity-Gain-Stable Op Amps single +2.5V to +5.5V supply and consume only 300A. (MAX4281/2/4) GainAmp amplifiers are optimally compensated for Rail-to-Rail Outputs Drive 1k Load each gain version, achieving exceptional GBW prod- Internal V / 2 Biasing (MAX4175/MAX4275) ucts up to 23MHz (A = +25V/V to +101V/V). High-volt- CC V age fault protection withstands 17V at either input +2.5V to +5.5V Single Supply without excessive current draw. 300A Supply Current Three versions are available in this amplifier family: single/ Up to 23MHz GBW Product dual/quad open-loop, unity-gain stable (MAX4281/ MAX4282/MAX4284) single/dual fixed gain (MAX4174/ Fault-Protected Inputs Withstand 17V MAX4274) and single/dual fixed gain plus internal Stable with Capacitive Loads Up to 470pF with V / 2 bias at the noninverting input (MAX4175/ CC No Isolation Resistor MAX4275), which simplifies input biasing in single-supply designs. The input common-mode voltage range of the open-loop amplifiers extends from 150mV below the Ordering Information negative supply to within 1.2V of the positive supply. PIN- TOP The outputs can swing rail-to-rail and drive a 1k load PART* TEMP. RANGE PACKAGE MARK while maintaining excellent DC accuracy. The amplifier is stable for capacitive loads up to 470pF. MAX4174 EUK-T -40C to +85C 5 SOT23-5 MAX4175 EUK-T -40C to +85C 5 SOT23-5 Applications Ordering Information continued at end of data sheet. * Insert the desired gain code (from the Gain Selection Guide) Portable Instruments Smart-Card Readers in the blank to complete the part number. Instruments, Terminals, Infrared Receivers for Refer to the Gain Selection Guide for a list of preferred gains and Bar-Code Readers Remote Controls and SOT Top Marks. Keyless Entry Low-Side Current-Sense Amplifiers Selector Guide appears at end of data sheet. Photodiode Preamps Pin Configurations Typical Operating Circuit TOP VIEW +5V V MAX4174 CC 0.1F V CC 1 5 OUT V CC MAX4175 R B R F + IN+ V 2 EE 0.1F R G R B OUT V EE IN+ 3 4 IN- INPUT IN- R R G F SOT23-5 0.1F V EE Pin Configurations continued at end of data sheet. Pg GainAmp is a trademark of Maxim Integrated Products. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. Maxim Integrated Products 1 For free samples & the latest literature: SOT23, Rail-to-Rail, Fixed-Gain GainAmps/Open-Loop Op Amps ABSOLUTE MAXIMUM RATINGS Supply Voltage (V to V ) ....................................-0.3V to +6V 8-Pin MAX (derate 4.1mW/C above +70C) ............330mW CC EE Voltage Inputs (IN ) 14-Pin SO (derate 8.3mW/C above +70C)...............667mW MAX4281/4282/4284.....................(V - 0.3V) to (V + 0.3V) 16-Pin QSOP (derate 8.3mW/C above +70C)..........667mW EE CC MAX4174/4175/4274/4275 (with respect to GND) ...........17V Operating Temperature Range ...........................-40C to +85C Output Short-Circuit Duration Maximum Junction Temperature .....................................+150C (OUT ).....................................Continuous to Either V or V Storage Temperature Range .............................-65C to +150C EE CC Continuous Power Dissipation (T = +70C) Lead Temperature (soldering, 10sec) .............................+300C A 5-Pin SOT23 (derate 7.1mW/C above +70C).............571mW 8-Pin SO (derate 5.88mW/C above +70C).................471mW 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 CHARACTERISTICSMAX4174/MAX4175/MAX4274/MAX4275 Fixed-Gain Amplifiers (V = +2.5V to +5.5V, V = 0, V = V = V / 2, R to V / 2, R = open, T = T to T , unless otherwise noted. Typical CC EE IN+ IN- CC L CC L A MIN MAX values are at V = +5V and T = +25C.) (Note 1) CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range V Guaranteed by PSRR tests 2.5 5.5 V CC V = 3V 300 460 CC MAX4174/MAX4274 V = 5V 330 510 Supply Current CC I A CC (per Amplifier) V = 3V 320 480 CC MAX4175/MAX4275, includes V / 2 bias resistors CC V = 5V 355 530 CC Input Offset Voltage V R = 100k 0.5 2.5 mV OS L Input Offset Voltage Drift 5 V/C Input Bias Current I IN +, MAX4174/MAX4274 (Note 2) 0.05 10 nA BIAS A < 25V/V 150 V Inverting Input Resistance k A > 25V/V 40 V MAX4174/MAX4274 1000 M Noninverting Input Resistance MAX4175/MAX4275 75 k V / 2 V / 2 CC CC IN + Bias Voltage MAX4175/MAX4275, V + = V - V IN IN - 0.25 + 0.25 IN + Input Voltage Range Guaranteed by functional test (Note 3) V V - 1.2 V EE CC IN - Input Voltage Range Guaranteed by functional test V V V EE CC Power-Supply Rejection PSRR V = 2.5V to 5.5V 70 90 dB CC Ratio Closed-Loop Output R 0.02 OUT Impedance Shorted to V 10 EE Short-Circuit Current mA Shorted to V 65 CC V - V 28 CC OH R = 100k L V - V 28 Output Voltage Swing OL EE V /V mV OH OL (Note 4) V - V 150 250 CC OH R = 1k L V - V 60 150 OL EE 2 MAX4174/5, MAX4274/5, MAX4281/2/4