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FEATURES

DESIGNED FOR LOW COST

LOW OFFSET VOLTAGE: ±500mV max

LOW OFFSET DRIFT: ±2mV/°C

LOW GAIN ERROR: ±0.05% max

WIDE BANDWIDTH: 3MHz

HIGH SLEW RATE: 14V/ms

FAST SETTLING TIME: 3ms to 0.01%

WIDE SUPPLY RANGE: ±4V to ±18V

LOW QUIESCENT CURRENT: 2.4mA

SO-8 SURFACE-MOUNT PACKAGE

APPLICATIONS

DIFFERENTIAL INPUT AMPLIFIER

INSTRUMENTATION AMPLIFIER

BUILDING BLOCK

G = 1/2 AMPLIFIER

G = 2 AMPLIFIER

DIFFERENTIAL CURRENT RECEIVER

VOLTAGE-CONTROLLED CURRENT SOURCE

GROUND LOOP ELIMINATOR

CURRENT SHUNT MONITOR

DESCRIPTION

The INA157 is a high slew rate, G = 1/2 or G = 2

difference amplifier consisting of a precision op amp

with a precision resistor network. The on-chip resistors

are laser trimmed for accurate gain and high

common-mode rejection. Excellent TCR tracking of

the resistors maintains gain accuracy and commonmode

rejection over temperature. The input commonmode

voltage range extends beyond the positive and

negative supply rails. It operates on ±4V to ±18V

supplies.

The difference amplifier is the foundation of many

commonly used circuits. The INA157 provides this

circuit function without using an expensive precision

resistor network. The INA157 is available in a SO-8

surface-mount package and is specified for operation

over the extended industrial temperature range, –40°C

to +85°C.