INA122 Texas Instruments TI pdf datasheet download

INA122

Single Supply, MicroPower
INSTRUMENTATION AMPLIFIER

FEATURES
l LOW QUIESCENT CURRENT: 60mA
l WIDE POWER SUPPLY RANGE
Single Supply: 2.2V to 36V
Dual Supply: –0.9/+1.3V to ±18V
l COMMON-MODE RANGE TO (V–)–0.1V
l RAIL-TO-RAIL OUTPUT SWING
l LOW OFFSET VOLTAGE: 250mV max
l LOW OFFSET DRIFT: 3mV/°C max
l LOW NOISE: 60nV/ÖHz
l LOW INPUT BIAS CURRENT: 25nA max
l 8-PIN DIP AND SO-8 SURFACE-MOUNT

APPLICATIONS
l PORTABLE, BATTERY OPERATED
SYSTEMS
l INDUSTRIAL SENSOR AMPLIFIER:
Bridge, RTD, Thermocouple
l PHYSIOLOGICAL AMPLIFIER:
ECG, EEG, EMG
l MULTI-CHANNEL DATA ACQUISITION

DESCRIPTION
The INA122 is a precision instrumentation amplifier
for accurate, low noise differential signal acquisition.
Its two-op-amp design provides excellent performance
with very low quiescent current, and is ideal for
portable instrumentation and data acquisition systems.
The INA122 can be operated with single power supplies
from 2.2V to 36V and quiescent current is a mere
60mA. It can also be operated from dual supplies. By
utilizing an input level-shift network, input commonmode
range extends to 0.1V below negative rail (single
supply ground).
A single external resistor sets gain from 5V/V to
10000V/V. Laser trimming provides very low offset
voltage (250mV max), offset voltage drift (3mV/°C
max) and excellent common-mode rejection.
Package options include 8-pin plastic DIP and SO-8
surface-mount packages. Both are specified for the
–40°C to +85°C extended industrial temperature range.


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