®
INA141
INA141
INA141
Precision, Low Power, G = 10, 100
INSTRUMENTATION AMPLIFIER
FEATURES
● LOW OFFSET VOLTAGE: 50µV max
● LOW DRIFT: 0.5µV/°C max
DESCRIPTION
The INA141 is a low power, general purpose instru-
mentation 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).
● ACCURATE GAIN: ±0.05% at G = 10
● LOW INPUT BIAS CURRENT: 5nA max
● HIGH CMR: 117dB min
● INPUTS PROTECTED TO ±40V
● WIDE SUPPLY RANGE: ±2.25 to ±18V
● LOW QUIESCENT CURRENT: 750µA
● 8-PIN PLASTIC DIP, SO-8
Simple pin connections set an accurate gain of 10 or
100V/V without external resistors. Internal input pro-
tection can withstand up to ±40V without damage.
The INA141 is laser trimmed for very low offset
voltage (50µV), drift (0.5µV/°C) and high common-
mode rejection (117dB at G = 100). It operates with
power supplies as low as ±2.25V, and quiescent
current is only 750µA—ideal for battery operated
systems.
APPLICATIONS
● BRIDGE AMPLIFIER
● THERMOCOUPLE AMPLIFIER
● RTD SENSOR AMPLIFIER
● MEDICAL INSTRUMENTATION
● DATA ACQUISITION
The INA141 is available in 8-pin plastic DIP, and
SO-8 surface-mount packages, specified for the –40°C
to +85°C temperature range.
V+
7
INA141
2
1
Over-Voltage
Protection
–
VIN
A1
40kΩ
40kΩ
252Ω
25kΩ
25kΩ
G = 10
or
G =100
6
5
A3
5050Ω
252Ω
VO
8
3
A2
Ref
Over-Voltage
Protection
+
40kΩ
40kΩ
VIN
4
V–
International Airport Industrial Park
•
Mailing Address: PO Box 11400, Tucson, AZ 85734
FAXLine: (800) 548-6133 (US/Canada Only)
• Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/
•
•
Cable: BBRCORP
•
Telex: 066-6491
•
FAX: (520) 889-1510
•
Immediate Product Info: (800) 548-6132
®
PDS-1297B
1
INA141
SBOS052
TI [ TEXAS INSTRUMENTS ]
