![](http://datasheet.mmic.net.cn/230000/INA2128UA_datasheet_15584852/INA2128UA_1.png)
1994 Burr-Brown Corporation
PDS-1243C
Printed in U.S.A. January, 1996
FEATURES
G
LOW OFFSET VOLTAGE: 50
μ
V max
G
LOW DRIFT: 0.5
μ
V/
°
C max
G
LOW INPUT BIAS CURRENT: 5nA max
G
HIGH CMR: 120dB min
G
INPUTS PROTECTED TO
±
40V
G
WIDE SUPPLY RANGE:
±
2.25V to
±
18V
G
LOW QUIESCENT CURRENT: 700
μ
A / IA
G
16-PIN PLASTIC DIP, SOL-16
DESCRIPTION
The INA2128 is a dual, low power, general purpose
instrumentation 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 (50
μ
V), drift (0.5
μ
V/
°
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 700
μ
A per IA—ideal for battery operated and
multiple-channel systems.
The INA2128 is available in 16-pin plastic DIP, and
SOL-16 surface-mount packages, specified for the
–40
°
C to +85
°
C temperature range.
APPLICATIONS
G
SENSOR AMPLIFIER
THERMOCOUPLE, RTD, BRIDGE
G
MEDICAL INSTRUMENTATION
G
MULTIPLE-CHANNEL SYSTEMS
G
BATTERY OPERATED EQUIPMENT
Dual, Low Power
INSTRUMENTATION AMPLIFIER
INA2128
A
1A
A
2A
A
3A
40k
40k
40k
40k
V
INA
1
3
4
2
16
14
13
15
7
6
5
10
11
12
V
INA
R
GA
V+
V–
INA2128
Ref
A
V
OA
G
A
= 1 +50k
R
GA
–
+
Over-Voltage
Protection
25k
25k
Over-Voltage
Protection
A
1B
A
2B
A
3B
40k
40k
8
9
40k
40k
V
INB
V
INB
R
GB
Ref
B
V
OB
G
B
= 1 +50k
R
GB
–
+
Over-Voltage
Protection
25k
25k
Over-Voltage
Protection
International Airport Industrial Park Mailing Address: PO Box 11400, Tucson, AZ 85734 Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 Tel: (520) 746-1111 Twx: 910-952-1111
Internet: http://www.burr-brown.com/ FAXLine: (800) 548-6133 (US/Canada Only) Cable: BBRCORP Telex: 066-6491 FAX: (520) 889-1510 Immediate Product Info: (800) 548-6132
INA2128
INA2128