INSTRUMENTATION AMPLIFIER. INA2128 Datasheet


INA2128 AMPLIFIER. Datasheet pdf. Equivalent


Part Number

INA2128

Description

INSTRUMENTATION AMPLIFIER

Manufacture

Burr-Brown Corporation

Total Page 19 Pages
Datasheet
Download INA2128 Datasheet


INA2128
INA2128INA2128
INA2128
SBOS035A DECEMBER 1995 REVISED APRIL 2007
Dual, Low Power
INSTRUMENTATION AMPLIFIER
FEATURES
q LOW OFFSET VOLTAGE: 50µV max
q LOW DRIFT: 0.5µV/°C max
q LOW INPUT BIAS CURRENT: 5nA max
q HIGH CMR: 120dB min
q INPUTS PROTECTED TO ±40V
q WIDE SUPPLY RANGE: ±2.25V to ±18V
q LOW QUIESCENT CURRENT: 700µA / IA
q 16-PIN PLASTIC DIP, SOL-16
APPLICATIONS
q SENSOR AMPLIFIER
THERMOCOUPLE, RTD, BRIDGE
q MEDICAL INSTRUMENTATION
q MULTIPLE-CHANNEL SYSTEMS
q BATTERY OPERATED EQUIPMENT
VINA
1 Over-Voltage
Protection
3
RGA
4
VIN+A
2 Over-Voltage
Protection
A1A
25k
25k
A2A
DESCRIPTION
The INA2128 is a dual, low power, general purpose instrumen-
tation amplifier offering excellent accuracy. Its versatile
3-op amp design and small size make it ideal for a wide range
of applications. Current-feedback input circuitry provides wide
bandwidth even at high gain (200kHz at G = 100).
A single external resistor sets any gain from 1 to 10,000.
Internal input protection can withstand up to ±40V without
damage.
The INA2128 is laser-trimmed for very low offset voltage
(50µV), drift (0.5µV/°C) and high common-mode rejection
(120dB at G 100). It operates with power supplies as low as
±2.25V, and quiescent current is only 700µA per IA—ideal for
battery-operated and multiple-channel systems.
The INA2128 is available in SOL-16 packages, specified
for the –40°C to +85°C temperature range.
V+
9
INA2128
40k
40k
A3A
7
GA = 1 +
50k
RGA
6 VOA
40k
5 RefA
40k
VINB
16
Over-Voltage
Protection
14
RGB
13
+
VINB
15
Over-Voltage
Protection
A1B
25k
25k
A2B
40k
40k
8
V
40k
A3B
40k
10
GB
=
1
+
50k
RGB
11 VOB
12 RefB
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 © 1995-2007, Texas Instruments Incorporated

INA2128
ABSOLUTE MAXIMUM RATINGS(1)
Supply Voltage .................................................................................. ±18V
Analog Input Voltage Range ............................................................. ±40V
Output Short-Circuit (to ground) .............................................. Continuous
Operating Temperature .................................................. 40°C to +125°C
Storage Temperature ..................................................... 55°C to +125°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.
PIN CONFIGURATION
Top View
SOIC
VINA 1
VI+NA 2
RGA 3
RGA 4
RefA 5
VOA 6
SenseA 7
V8
16 VINB
15 VI+NB
14 RGB
13 RGB
12 RefB
11 VOB
10 SenseB
9 V+
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.
ORDERING INFORMATION(1)
PRODUCT
INA2128UA
INA2128U
PACKAGE-LEAD
SOIC-16
SOIC-16
PACKAGE TEMPERATURE
DESIGNATOR
RANGE
DW 40°C to +85°C
DW 40°C to +85°C
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 web site
at www.ti.com.
2 INA2128
www.ti.com
SBOS035A


Features INA2128INA2128 INA2128 SBOS035A – DEC EMBER 1995 – REVISED APRIL 2007 Dual, Low Power INSTRUMENTATION AMPLIFIER F EATURES q LOW OFFSET VOLTAGE: 50µV max q LOW DRIFT: 0.5µV/°C max q LOW INPU T BIAS CURRENT: 5nA max q HIGH CMR: 120 dB min q INPUTS PROTECTED TO ±40V q WI DE SUPPLY RANGE: ±2.25V to ±18V q LOW QUIESCENT CURRENT: 700µA / IA q 16-PI N PLASTIC DIP, SOL-16 APPLICATIONS q SE NSOR AMPLIFIER THERMOCOUPLE, RTD, BRIDG E q MEDICAL INSTRUMENTATION q MULTIPLE- CHANNEL SYSTEMS q BATTERY OPERATED EQUI PMENT VIN–A 1 Over-Voltage Protecti on 3 RGA 4 VIN+A 2 Over-Voltage Pro tection A1A 25kΩ 25kΩ A2A DESCRIP TION The INA2128 is a dual, low power, general purpose instrumentation amplifi er offering excellent accuracy. Its ver satile 3-op amp design and small size m ake it ideal for a wide range of applic ations. Current-feedback input circuitr y provides wide bandwidth even at high gain (200kHz at G = 100). A single exte rnal resistor sets any gain from 1 to 10,000. Internal input protection can with.
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