1 Features

1• Input common-mode range: Includes V–

• Common-mode rejection:

– 104 dB, min (G = 10)

– 100 dB, min at 5 kHz (G = 10)

• Power-supply rejection: 100 dB, min (G = 1)

• Low offset voltage: 150 μV, max

• Gain drift: 1 ppm/°C (G = 1), 35 ppm/°C (G > 1)

• Noise: 18 nV/√Hz, G ≥ 100

• Bandwidth: 1 MHz (G = 1), 60 kHz (G = 100)

• Inputs protected up to ±40 V

• Rail-to-rail output

• Supply current: 200 μA

• Supply range:

– Single supply: 3 V to 36 V

– Dual supply: ±1.5 V to ±18 V

• Specified temperature range:

–40°C to +125°C

• Packages: 8-pin VSSOP, SOIC, and WSON

2 Applications

• Analog input module

• Flow transmitter

• Battery test

• LCD test

• Electrocardiogram (ECG)

• Surgical equipment

• Process analytics (pH, gas, concentration, force

and humidity)

• Circuit breaker (ACB, MCCB, VCB)

3 Description

The INA826 is a cost-effective instrumentation

amplifier that offers extremely low power consumption

and operates over a very wide single-supply or dualsupply

range. A single external resistor sets any gain

from 1 to 1000. The device offers excellent stability

over temperature, even at G > 1, as a result of the

low gain drift of only 35 ppm/°C (maximum).

The INA826 is optimized to provide excellent

common-mode rejection ratio of over 100 dB (G = 10)

over frequencies up to 5 kHz. At G = 1, the commonmode

rejection ratio exceeds 84 dB across the full

input common-mode range, from the negative supply

all the way up to 1 V of the positive supply. Using a

rail-to-rail output, the INA826 is a great choice for

low-voltage operation from a 3-V single supply, as

well as dual supplies up to ±18 V.

Additional circuitry protects the inputs against

overvoltage of up to ±40 V beyond the power

supplies by limiting the input currents to less than

8 mA.

The INA826 is available in 8-pin SOIC, VSSOP, and

tiny 3-mm × 3-mm WSON surface-mount packages.

All versions are specified for the –40°C to +125°C

temperature range.