General Description

The MAX4174/MAX4175/MAX4274/MAX4275 Gain Amp™ family combines a low-cost Rail-to-Rail®op amp with precision internal gain-setting resistors and VCC/ 2 biasing. Factory-trimmed on-chip resistors decrease design size, cost, and layout, and provide 0.1 gain accuracy. Fixed inverting gains from -0.25V/V to -100V/V or noninverting gains from +1.25V/V to +101V/V are available. These devices operate from a single +2.5V to +5.5V supply and consume only 300µA.

GainAmp amplifiers are optimally compensated for each gain version, achieving exceptional GBW products up to 23MHz (AV= +25V/V to +101V/V). High-voltage fault protection withstands ±17V at either input without excessive current draw.

Features

♦GainAmp Family Provides Internal Precision Gain-Setting Resistors in SOT23 (MAX4174/5)

♦0.1 Gain Accuracy (RF/RG) (MAX4174/5, MAX4274/5)

♦54 Standard Gains Available (MAX4174/5, MAX4274/5)

♦Open-Loop Unity-Gain-Stable Op Amps (MAX4281/2/4)

♦Rail-to-Rail Outputs Drive 1kΩLoad

♦Internal VCC / 2 Biasing (MAX4175/MAX4275)

♦+2.5V to +5.5V Single Supply

♦300µA Supply Current

♦Up to 23MHz GBW Product

♦Fault-Protected Inputs Withstand ±17V

♦Stable with Capacitive Loads Up to 470pF with No Isolation Resistor