INA157UA-2K5 Datasheet, PDF (1/12 Pages) Texas Instruments – High-Speed, Precision DIFFERENCE AMPLIFIER

®
INA157
INA157
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High-Speed, Precision
DIFFERENCE AMPLIFIER
FEATURES
q DESIGNED FOR LOW COST
q LOW OFFSET VOLTAGE: ±500µV max
q LOW OFFSET DRIFT: ±2µV/°C
q LOW GAIN ERROR: ±0.05% max
q WIDE BANDWIDTH: 3MHz
q HIGH SLEW RATE: 14V/µs
q FAST SETTLING TIME: 3µs to 0.01%
q WIDE SUPPLY RANGE: ±4V to ±18V
q LOW QUIESCENT CURRENT: 2.4mA
q SO-8 SURFACE-MOUNT PACKAGE
APPLICATIONS
q DIFFERENTIAL INPUT AMPLIFIER
q INSTRUMENTATION AMPLIFIER
BUILDING BLOCK
q G = 1/2 AMPLIFIER
q G = 2 AMPLIFIER
q DIFFERENTIAL CURRENT RECEIVER
q VOLTAGE-CONTROLLED CURRENT SOURCE
q GROUND LOOP ELIMINATOR
q 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 resis-
tors are laser trimmed for accurate gain and high
common-mode rejection. Excellent TCR tracking of
the resistors maintains gain accuracy and common-
mode rejection over temperature. The input common-
mode 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.
12kΩ
–In ²
V+
7
6kΩ
5 _Sense
12kΩ
3
+In
6kΩ
4
V–
6 _Output
1 _Ref
SBOS105
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©1999 Burr-Brown Corporation
PDS-1483B
Printed in U.S.A. March, 1999