INA322 AMPLIFIER Datasheet

INA322 Datasheet, PDF, Equivalent


Part Number

INA322

Description

CMOS INSTRUMENTATION AMPLIFIER

Manufacture

Burr-Brown

Total Page 20 Pages
Datasheet
Download INA322 Datasheet


INA322
INA322
INA2322INA322 ®
SBOS174B – DECEMBER 2000 – REVISED FEBRUARY 2006
microPower, Single-Supply, CMOS
INSTRUMENTATION AMPLIFIER
FEATURES
q LOW COST
q LOW QUIESCENT CURRENT: 40µA/channel
Shut Down: < 1µA
q HIGH GAIN ACCURACY: G = 5, 0.07%, 2ppm/°C
q GAIN SET WITH EXTERNAL RESISTORS
q LOW BIAS CURRENT: 10pA
q BANDWIDTH: 500kHz, G = 5V/V
q RAIL-TO-RAIL OUTPUT SWING: (V+) – 0.02V
q WIDE TEMPERATURE RANGE:
–55°C to +125°C
q SINGLE VERSION IN MSOP-8 PACKAGE AND
DUAL VERSION IN TSSOP-14 PACKAGE
APPLICATIONS
q INDUSTRIAL SENSOR AMPLIFIERS:
Bridge, RTD, Thermistor, Position
q PHYSIOLOGICAL AMPLIFIERS:
ECG, EEG, EMG
q A/D CONVERTER SIGNAL CONDITIONING
q DIFFERENTIAL LINE RECEIVERS WITH GAIN
q FIELD UTILITY METERS
q PCMCIA CARDS
q COMMUNICATION SYSTEMS
q TEST EQUIPMENT
q AUTOMOTIVE INSTRUMENTATION
DESCRIPTION
The INA322 family is a series of low cost, rail-to-rail output,
micropower CMOS instrumentation amplifiers that offer wide-
range, single-supply, as well as bipolar-supply operation.
The INA322 family provides low-cost, low-noise amplification
of differential signals with micropower current consumption of
40µA. When shutdown the INA322 has a quiescent current
of less than 1µA. Returning to normal operations within
microseconds, the shutdown feature makes the INA322
optimal for low-power battery or multiplexing applications.
R1
Configured internally for 5V/V gain, the INA322 offers excep-
tional flexibility with user-programmable external gain resis-
tors. The INA322 reduces common-mode error over fre-
quency and with CMRR remaining high up to 3kHz, line noise
and line harmonics are rejected.
The low-power design does not compromise on bandwidth or
slew rate, making the INA322 ideal for driving sampling Ana-
log-to-Digital (A/D) converters as well as general-purpose
applications. With high precision, low cost, and small packag-
ing, the INA322 outperforms discrete designs, while offering
reliability and performance.
RG R2
REF
160k40k
40k
160k
VIN–
VIN+
A1
A3
A2
Gain = 5 + 5(R2/R1)
VOUT = (VIN+ – VIN–) • Gain
VOUT
Shutdown
V+
V–
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
www.ti.com
Copyright © 2000-2006, Texas Instruments Incorporated

INA322
ABSOLUTE MAXIMUM RATINGS(1)
Supply Voltage, V+ to V– ................................................................... 7.5V
Signal Input Terminals, Voltage(2) .................. (V–) – 0.5V to (V+) + 0.5V
Current(2) .................................................... 10mA
Output Short-Circuit(3) .............................................................. Continuous
Operating Temperature .................................................. –65°C to +150°C
Storage Temperature ..................................................... –65°C to +150°C
Junction Temperature .................................................................... +150°C
NOTE: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability. These are stress ratings only, and functional operation of the
device at these or any other conditions beyond those specified is not implied.
(2) Input terminals are diode-clamped to the power-supply rails. Input signals
that can swing more than 0.5V beyond the supply rails should be current limited
to 10mA or less. (3) Short-circuit to ground, one amplifier per package.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instru-
ments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
PACKAGE/ORDERING INFORMATION(1)
PRODUCT
SINGLE
INA322EA
DUAL
INA2322EA
PACKAGE-LEAD
MSOP-8
TSSOP-14
PACKAGE
DESIGNATOR
DGK
PW
PACKAGE
MARKING
C22
INA2322EA
NOTES: (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at
www.ti.com.
PIN CONFIGURATIONS
Top View
INA322
RG 1
VIN2
VIN+ 3
V4
8 Shutdown
7 V+
6 VOUT
5 REF
MSOP-8 (EA)
RGA 1
VINA
VIN+A
V
2
3
4
VIN+B
VINB
RGB
5
6
7
INA2322
14 Shutdown A
13 VOUTA
12 REFA
11 V+
10 REFB
9 VOUTB
8 Shutdown B
Dual, TSSOP-14 (EA)
2 INA322
SBOS174B


Features INA322 INA2322INA322 ® SBOS174B – DEC EMBER 2000 – REVISED FEBRUARY 2006 mi croPower, Single-Supply, CMOS INSTRUMEN TATION AMPLIFIER FEATURES q LOW COST q LOW QUIESCENT CURRENT: 40µA/channel S hut Down: < 1µA q HIGH GAIN ACCURACY: G = 5, 0.07%, 2ppm/°C q GAIN SET WITH EXTERNAL RESISTORS q LOW BIAS CURRENT: 10pA q BANDWIDTH: 500kHz, G = 5V/V q RA IL-TO-RAIL OUTPUT SWING: (V+) – 0.02V q WIDE TEMPERATURE RANGE: –55°C to +125°C q SINGLE VERSION IN MSOP-8 PACK AGE AND DUAL VERSION IN TSSOP-14 PACKAG E APPLICATIONS q INDUSTRIAL SENSOR AMP LIFIERS: Bridge, RTD, Thermistor, Posit ion q PHYSIOLOGICAL AMPLIFIERS: ECG, EE G, EMG q A/D CONVERTER SIGNAL CONDITION ING q DIFFERENTIAL LINE RECEIVERS WITH GAIN q FIELD UTILITY METERS q PCMCIA CA RDS q COMMUNICATION SYSTEMS q TEST EQUI PMENT q AUTOMOTIVE INSTRUMENTATION DES CRIPTION The INA322 family is a series of low cost, rail-to-rail output, micro power CMOS instrumentation amplifiers t hat offer widerange, single-supply, as well as bipolar-supply operation. The .
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