The INA122 is a precision instrumentation amplifier
for accurate, low noise differential signal acquisition.
Its two-op-amp design provides excellent performance
with very low quiescent current, and is ideal for
portable instrumentation and data acquisition systems.
The INA122 can be operated with single power sup-
plies from 2.2V to 36V and quiescent current is a mere
60碌A(chǔ). It can also be operated from dual supplies. By
utilizing an input level-shift network, input common-
mode range extends to 0.1V below negative rail (single
supply ground).
A single external resistor sets gain from 5V/V to
10000V/V. Laser trimming provides very low offset
voltage (250碌V max), offset voltage drift (3碌V/擄C
max) and excellent common-mode rejection.
Package options include 8-pin plastic DIP and SO-8
surface-mount packages. Both are specified for the
鈥?0擄C to +85擄C extended industrial temperature range.
V+
7
INA122
V+
3
6
8
100k鈩?/div>
25k鈩?/div>
R
G
25k鈩?/div>
V
O
+
鈥?/div>
V
O
= (V
IN
鈥?V
IN
) G
G=5+
200k
R
G
IN
1
V鈥?/div>
IN
2
100k鈩?/div>
5
Ref
4
V鈥?/div>
International Airport Industrial Park 鈥?Mailing Address: PO Box 11400, Tucson, AZ 85734 鈥?Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 鈥?Tel: (520) 746-1111 鈥?Twx: 910-952-1111
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