®
INA
131
INA131
Precision G = 100
INSTRUMENTATION AMPLIFIER
FEATURES
q
LOW OFFSET VOLTAGE: 50µV max
q
LOW DRIFT: 0.25µV/
°
C max
q
LOW INPUT BIAS CURRENT: 2nA max
q
HIGH COMMON-MODE REJECTION:
110dB min
q
INPUT OVERVOLTAGE PROTECTION:
±
40V
q
WIDE SUPPLY RANGE:
±
2.25 to
±
18V
q
LOW QUIESCENT CURRENT: 3mA
q
8-PIN PLASTIC DIP
DESCRIPTION
The INA131 is a low cost, general purpose G = 100
instrumentation amplifier offering excellent accuracy.
Its 3-op amp design and small size make it ideal for
a wide range of applications.
On-chip laser trimmed resistors accurately set a fixed
gain of 100. The INA131 is laser trimmed to achieve
very low offset voltage (50µV max), drift (0.25µV/°C
max), and high CMR (110dB min). Internal input
protection can withstand up to
±40V
inputs without
damage.
The INA131 is available in a 8-pin plastic DIP. They
are specified over the –40°C to +85°C temperature
range.
APPLICATIONS
q
BRIDGE AMPLIFIER
q
THERMOCOUPLE AMPLIFIER
q
RTD SENSOR AMPLIFIER
q
MEDICAL INSTRUMENTATION
q
DATA ACQUISITION
V+
7
–
V
IN
2
Over-Voltage
Protection
INA131
A
1
5kΩ
25kΩ
2.63kΩ
8
25kΩ
A
2
5kΩ
4
DIP
V–
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
1
25kΩ
A
3
6
+
–
V
O
= 100 (V
IN
– V
IN
)
5
25kΩ
+
V
IN
3
Ref
Over-Voltage
Protection
©
1992 Burr-Brown Corporation
PDS-1144E
Printed in U.S.A. March, 1998
BURR-BROWN [ BURR-BROWN CORPORATION ]
