INA145 Datasheet, PDF (1/15 Pages) Burr-Brown (TI) – Programmable Gain DIFFERENCE AMPLIFIER

®
INA145
INA145
For most current data sheet and other product
information, visit www.burr-brown.com
Programmable Gain
DIFFERENCE AMPLIFIER
FEATURES
q DIFFERENTIAL GAIN = 1V/V TO 1000V/V:
Set with External Resistors
q LOW QUIESCENT CURRENT: 570µA
q WIDE SUPPLY RANGE:
Single Supply: 4.5V to 36V
Dual Supplies: ±2.25V to ±18V
q HIGH COMMON-MODE VOLTAGE:
+8V at V_S = +5V
±28V at V_S = ±15V
q LOW GAIN ERROR: 0.01%
q HIGH CMR: 86dB
q SO-8 PACKAGE
APPLICATIONS
q CURRENT SHUNT MEASUREMENTS
q SENSOR AMPLIFIER
q DIFFERENTIAL LINE RECEIVER
q BATTERY POWERED SYSTEMS
DESCRIPTION
The INA145 is a precision, unity-gain difference
amplifier consisting of a precision op amp and on-
chip precision resistor network. Two external resistors
set the gain from 1V/V to 1000V/V. The input com-
mon-mode voltage range extends beyond the positive
and negative rails.
On-chip precision resistors are laser-trimmed to achieve
accurate gain and high common-mode rejection. Ex-
cellent TCR tracking of these resistors assures contin-
ued high precision over temperature.
The INA145 is available in the SO-8 surface-mount
package specified for the extended industrial tempera-
ture range, –40°C to +85°C.
SBOS120
V_IN–
2
V_IN+
3
V+
7
R₁
40kΩ
R₂
40kΩ
G=1
R₃
40kΩ
A1
R₄
40kΩ
4
V–
R_G1
R_G2
R_{G 5}
R₅
10kΩ
(1%)
A2
6
V_O
V_O = (V_I+N – V_I–N)(1 + R_G2/R_G1)
INA145
1
8
Ref
V₀₁
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Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]
©1999 Burr-Brown Corporation
PDS-11567B
®
INA145 ^{Printed in U.S.A. March, 2000}