文档介绍：IN
A1
26 INA2126 INA126
INA126
IN INA2126
A
21
26
INA2126
SBOS062A – JANUARY 1996 – REVISED AUGUST 2005
MicroPOWER INSTRUMENTATION AMPLIFIER
Single and Dual Versions
FEATURES DESCRIPTION
● LOW QUIESCENT CURRENT: 175µA/chan. The INA126 and INA2126 are precision instrumentation ampli-
● WIDE SUPPLY RANGE: ± to ±18V fiers for accurate, low noise differential signal acquisition. Their
● LOW OFFSET VOLTAGE: 250µV max two-op-amp design provides excellent performance with very
low quiescent current (175µA/channel). This, combined with a
●µ °
LOW OFFSET DRIFT: 3 V/ C max wide operating voltage range of ± to ±18V, makes them
● LOW NOISE: 35nV/√Hz ideal for portable instrumentation and data acquisition sys-
● LOW INPUT BIAS CURRENT: 25nA max tems.
● 8-PIN DIP, SO-8, MSOP-8 SURFACE- MOUNT Gain can be set from 5V/V to 10000V/V with a single
DUAL: 16-Pin DIP, SO-16, SSOP-16 external resistor. Laser trimmed input circuitry provides low
offset voltage (250µV max), low offset voltage drift (3µV/°C
APPLICATIONS max) and mon-mode rejection.
Single version package options include 8-pin plastic DIP,
● INDUSTRIAL SENSOR AMPLIFIER: SO-8 surface mount, and fine-pitch MSOP-8 surface-mount.
Bridge, RTD, Thermocouple Dual version is available in the space-saving SSOP-16 fine-
● PHYSIOLOGICAL AMPLIFIER: pitch surface mount, SO-16, and 16-pin DIP. All are specified
ECG, EEG, EMG for the –40°C to +85°C industrial temperature range.
● MULTI-CHANNEL DATA ACQUISITION V+
INA2126 9
● PORTABLE, BATTERY OPERATED SYSTEMS + 2
VIN
6 + –
V = (V – V ) G
3 O IN IN
40kΩ 80kΩ
V+ 7 G = 5 +
RG
10kΩ
7
RG
INA126
+ 3
VIN 4 Ω
6 10k
V = (V+ – V–) G
8 O IN IN
– 1
80kΩ V
40kΩ G = 5 + IN
40kΩ
RG 5
10kΩ+ 15
R VIN
G 11
V = (V+ – V –) G
10kΩ 14 O IN IN
40kΩ 80kΩ
1 G = 5 +
RG
10kΩ 10
R
– 2 G
VIN
40kΩ
5 13 10kΩ
4 – 16
VIN
40kΩ
V– 8 12
V–
Please be aware that an important notice con