INA156| Datasheet

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INA 156

INA156

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Single-Supply, Rail-to-Rail Output, CMOS INSTRUMENTATION AMPLIFIER
FEATURES
q q q q q q q q q RAIL-TO-RAIL OUTPUT SWING: Within 20mV LOW OFFSET DRIFT: 5uV/ C INTERNAL FIXED GAIN = 10V/V OR 50V/V SPECIFIED TEMPERATURE RANGE: 55 C to +125 C LOW INPUT BIAS CURRENT: 1pA WIDE BANDWIDTH: 550kHz in G = 10 HIGH SLEW RATE: 6.5V/us LOW COST TINY MSOP-8 PACKAGES

APPLICATIONS
q INDUSTRIAL SENSOR AMPLIFIERS: Bridge, RTD, Thermocouple, Flow, Position q MEDICAL EQUIPMENT: ECG, EEG, EMG Amplifiers q DRIVING A/D CONVERTERS q PCMCIA CARDS q AUDIO PROCESSING q COMMUNICATIONS q TEST EQUIPMENT q LOW COST AUTOMOTIVE INSTRUMENTATION

DESCRIPTION
The INA156 is a low-cost CMOS instrumentation amplifier with rail-to-rail output swing optimized for low-voltage, single-supply operation. Wide bandwidth (550kHz in G = 10) and high slew rate (6.5V/us) make the INA156 suitable for driving sampling A/D converters as well as general purpose and audio applications. Fast settling time allows use with higher speed sensors and transducers, and rapid scanning data acquisition systems.
RG 1

Gain can be set to 10V/V or 50V/V by pin strapping. Gains between these two values can be obtained with the addition of a single resistor. The INA156 is fully specified over the supply range of +2.7V to +5.5V. The INA156 is available in an MSOP-8 surface-mount package specified for operation over the temperature range 55 C to 125 C.

G = 10 pins open G = 50 pins connected

RG 8

V+ 7 INA156

5k 5 200k 22.2k 22.2k

5k 200k VO = (VIN VIN) G + VREF A1 6 A2 VO
+

Ref

VIN V+
IN

2 3

4 V
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1999 Burr-Brown Corporation

PDS-1565A

Printed in U.S.A. December, 1999

SBOS119