1 Features

• Low quiescent current: 175 μA/channel

• Wide supply range: ±1.35 V to ±18 V

• Low offset voltage: 250-μV maximum

• Low offset drift: 3-μV/°C maximum

• Low noise: 35 nV/√Hz

• Low input bias current: 25-nA maximum

• Temperature range: –40°C to +85°C

• Multiple package options:

– Single channel:

• INA126P/PA 8-pin PDIP (P)

• INA126U/UA 8-pin SOIC (D)

• INA126E/EA 8-pin VSSOP (DGK)

– Dual channels:

• INA2126P/PA 16-pin PDIP (N)

• INA2126U/UA 16-pin SOIC (D)

• INA2126E/EA 16-pin SSOP (DBQ)

2 Applications

• Level transmitter

• Flow transmitter

• Multiparameter patient monitor

• Mixed module (AI, AO, DI, DO)

• AC charging (pile) station

• Infusion pump

• Electrocardiogram (ECG)

3 Description

The INA126 and INA2126 (INAx126) are precision

instrumentation amplifiers for accurate, low-noise,

differential-signal acquisition. The two-op-amp design

provides excellent performance with low quiescent

current (175 μA/channel). These features combined

with a wide operating voltage range of ±1.35 V to

±18 V make the INAx126 a great choice for portable

instrumentation and data acquisition systems.

Gain can be set from 5 V/V to 10000 V/V with

a single external resistor. Precision input circuitry

provides low offset voltage (250 μV, maximum), low

offset voltage drift (3 μV/°C, maximum), and excellent

common-mode rejection.

All versions are specified for the –40°C to +85°C

industrial temperature range.