![](http://datasheet.mmic.net.cn/230000/INA126UA_datasheet_15584755/INA126UA_1.png)
1996 Burr-Brown Corporation
PDS-1365C
Printed in U.S.A. September, 1997
INA126
INA2126
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
Micro
POWER INSTRUMENTATION AMPLIFIER
Single and Dual Versions
FEATURES
G
LOW QUIESCENT CURRENT: 175
μ
A/chan.
G
WIDE SUPPLY RANGE:
±
1.35V to
±
18V
G
LOW OFFSET VOLTAGE: 250
μ
V max
G
LOW OFFSET DRIFT: 3
μ
V/
°
C max
G
LOW NOISE: 35nV/
√
Hz
G
LOW INPUT BIAS CURRENT: 25nA max
G
8-PIN DIP, SO-8, MSOP-8 SURFACE- MOUNT
DUAL: 16-Pin DIP, SO-16, SSOP-16
DESCRIPTION
The INA126 and INA2126 are precision instrumentation
amplifiers for accurate, low noise differential signal acquisi-
tion. Their two-op-amp design provides excellent perfor-
mance with very low quiescent current (175
μ
A/chan.). This,
combined with wide operating voltage range of
±
1.35V to
±
18V, makes them ideal for portable instrumentation and data
acquisition systems.
Gain can be set from 5V/V to 10000V/V with a single
external resistor. Laser trimmed input circuitry provides
low offset voltage (250
μ
V max), low offset voltage drift
(3
μ
V/
°
C max) and excellent common-mode rejection.
Single version package options include 8-pin plastic DIP,
SO-8 surface mount, and fine-pitch MSOP-8 surface-mount.
Dual version is available in the space-saving SSOP-16 fine-
pitch surface mount, SO-16, and 16-pin DIP. All are speci-
fied for the –40
°
C to +85
°
C industrial temperature range.
APPLICATIONS
G
INDUSTRIAL SENSOR AMPLIFIER:
Bridge, RTD, Thermocouple
G
PHYSIOLOGICAL AMPLIFIER:
ECG, EEG, EMG
G
MULTI-CHANNEL DATA ACQUISITION
G
PORTABLE, BATTERY OPERATED SYSTEMS
40k
10k
10k
40k
INA126
5
4
2
1
8
3
7
6
R
G
V
IN
–
V
IN
+
V+
V–
V
O
= (V
IN
– V
IN
) G
–
+
80k
R
G
G = 5 +
INA126
INA2126
INA2126
INA126
INA2126
40k
10k
10k
40k
INA2126
5
7
8
1
3
4
2
9
6
R
G
V
IN
–
V
IN
+
V+
V–
V
O
= (V
IN
– V
IN
) G
–
+
80k
R
G
G = 5 +
V
O
= (V
IN
– V
IN
) G
–
+
80k
R
G
G = 5 +
40k
10k
10k
40k
12
16
14
13
15
11
10
R
G
V
IN
–
V
IN
+