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.