INA122_13 Datasheet, PDF (1/14 Pages) Burr-Brown (TI) – Single Supply, MicroPower INSTRUMENTATION AMPLIFIER

®
INA122
INA122
INA122
Single Supply, MicroPower
INSTRUMENTATION AMPLIFIER
FEATURES
q LOW QUIESCENT CURRENT: 60µA
q WIDE POWER SUPPLY RANGE
Single Supply: 2.2V to 36V
Dual Supply: –0.9/+1.3V to ±18V
q COMMON-MODE RANGE TO (V–)–0.1V
q RAIL-TO-RAIL OUTPUT SWING
q LOW OFFSET VOLTAGE: 250µV max
q LOW OFFSET DRIFT: 3µV/°C max
q LOW NOISE: 60nV/√ Hz
q LOW INPUT BIAS CURRENT: 25nA max
q 8-PIN DIP AND SO-8 SURFACE-MOUNT
V_I⁺_N
3
8
R_G
1
V_I^–_N
2
V+
7
INA122
100kΩ
25kΩ
25kΩ
6
V_O
V_O = (V_I⁺_N – V_I^–_N) G
G = 5 + ^200k
R_G
100kΩ
5 Ref
APPLICATIONS
q PORTABLE, BATTERY OPERATED
SYSTEMS
q INDUSTRIAL SENSOR AMPLIFIER:
Bridge, RTD, Thermocouple
q PHYSIOLOGICAL AMPLIFIER:
ECG, EEG, EMG
q 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 sup-
plies from 2.2V to 36V and quiescent current is a mere
60µA. It can also be operated from dual supplies. By
utilizing an input level-shift network, input common-
mode 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 (250µV max), offset voltage drift (3µV/°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.
4
V–
SBOS069
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone] • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: [phone] (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
©1997 Burr-Brown Corporation
PDS-1388B
Printed in U.S.A. October, 1997