INA114 Datasheet, PDF (1/17 Pages) Burr-Brown (TI) – Precision INSTRUMENTATION AMPLIFIER

®
INA114
INA114
INA114
SBOS014
Precision
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:
115dB min
q INPUT OVER-VOLTAGE PROTECTION:
±40V
q WIDE SUPPLY RANGE: ±2.25 to ±18V
q LOW QUIESCENT CURRENT: 3mA max
q 8-PIN PLASTIC AND SOL-16
APPLICATIONS
q BRIDGE AMPLIFIER
q THERMOCOUPLE AMPLIFIER
q RTD SENSOR AMPLIFIER
q MEDICAL INSTRUMENTATION
q DATA ACQUISITION
–
2 Over-Voltage
V_IN
(4)
Protection
1
(2)
R_G
8
(15)
+
3 Over-Voltage
V_IN
(5)
Protection
A₁
25kΩ
25kΩ
A₂
DIP
DESCRIPTION
The INA114 is a low cost, general purpose instrumen-
tation amplifier offering excellent accuracy. Its versa-
tile 3-op amp design and small size make it ideal for a
wide range of applications.
A single external resistor sets any gain from 1 to 10,000.
Internal input protection can withstand up to ±40V
without damage.
The INA114 is laser trimmed for very low offset voltage
(50µV), drift (0.25µV/°C) and high common-mode
rejection (115dB at G = 1000). It operates with power
supplies as low as ±2.25V, allowing use in battery
operated and single 5V supply systems. Quiescent cur-
rent is 3mA maximum.
The INA114 is available in 8-pin plastic and SOL-16
surface-mount packages. Both are specified for the
–40°C to +85°C temperature range.
V+
7 (13)
INA114
25kΩ
25kΩ
A₃
25kΩ
25kΩ
4 (7)
V–
(SOIC)
Feedback
(12)
DIP Connected
Internally
6
(11)
V_O
5
Ref
(10)
G = 1 + ^50kΩ
R_G
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone] • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: [phone] (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
©1992 Burr-Brown Corporation
PDS-11142D
®
INA114 ^{Printed in U.S.A. March, 1998}