Number of channels (#) 1	1
Vs (Max) (V) 36	36
Vs (Min) (V) 4.5	4.5
Input offset (+/-) (Max) (uV) 35	35
Gain (Min) (V/V) 1	1
Gain (Max) (V/V) 10000	10000
Noise at 1 kHz (Typ) (nV/rt (Hz)) 7	7
Features Super-beta, Small Size, Overvoltage Protection	Super-beta, Small Size, Overvoltage Protection
CMRR (Min) (dB)	136
Input offset drift (+/-) (Max) (uV/C)	0.4
Input bias current (+/-) (Max) (nA)	0.5
Iq (Typ) (mA)	0.6
Bandwidth at min gain (Typ) (MHz)	4.7
Gain error (+/-) (Max) (%)	0.15
Operating temperature range (C)	‘-40 to 125
Type	Resistor
Output swing headroom (to negative supply) (Typ) (V)	0.15
Output swing headroom (to positive supply) (Typ) (V)	-0.15
Input common mode headroom (to negative supply) (Typ) (V)	2
Input common mode headroom (to positive supply) (Typ) (V)	-2
Noise at 0.1 Hz-10 Hz (Typ) (uVpp)	0.14
Gain non-linearity (+/-) (Max) (%)	0.0015

The INA821 is a high-precision instrumentation amplifier that offers low power consumption and operates over a wide single-supply or dual-supply range. A single external resistor sets any gain from 1 to 10,000. The device has high precision as a result of super-beta input transistors, which provide low input offset voltage, offset voltage drift, input bias current, and input voltage and current noise. Additional circuitry protects the inputs against overvoltage up to ±40 V. The INA821 is optimized to provide a high common-mode rejection ratio. At G = 1, the common-mode rejection ratio exceeds 92 dB across the full input common-mode range. The device is designed for low-voltage operation from a 4.5-V single supply, and dual supplies up to ±18 V. The INA821 is available in 8-pin SOIC, VSSOP, and WSON packages, and is specified over the –40°C to +125°C temperature range.Low offset voltage: 10 µV (typ), 35 µV (max) Gain drift: 5 ppm/°C (G = 1), 35 ppm/°C (G > 1) (max) Noise: 7 nV/√Hz Bandwidth: 4.7 MHz (G = 1), 290 kHz (G = 100) Stable with 1-nF capacitive loads Inputs protected up to ±40 V Common-mode rejection: 112 dB, G = 10 (min) Power supply rejection: 110 dB, G = 1 (min) Supply current: 650 µA (max) Supply range: Single-supply: 4.5 V to 36 V Dual-supply: ±2.25 V to ±18 V Specified temperature range: –40°C to +125°C Packages: 8-pin SOIC, VSSOP, and WSON