INA821 Series

High bandwidth (4.7MHz), low noise (7nV/√Hz), precision (35μV), low-power, instrumentation amp

Link to Manufacturer Page: https://www.ti.com/

Catalog

High bandwidth (4.7MHz), low noise (7nV/√Hz), precision (35μV), low-power, instrumentation amp

Part	Voltage - Supply Span (Min) [Min]	Slew Rate	Current - Output / Channel	Current - Supply	-3db Bandwidth	Voltage - Input Offset	Number of Circuits	Package / Case	Package / Case	Package / Case	Voltage - Supply Span (Max) [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Current - Input Bias	Amplifier Type	Supplier Device Package
Texas Instruments INA821IDGKT	4.5 V	2 V/µs	20 mA	600 µA	4.7 MHz	40 µV	1	8-MSOP, 8-TSSOP	0.118 in	3 mm	36 V	125 °C	-40 °C	Surface Mount	150 pA	Instrumentation
Texas Instruments INA821IDRGR	4.5 V	2 V/µs	20 mA	600 µA	4.7 MHz	10 µV	1	8-WFDFN Exposed Pad			36 V	125 °C	-40 °C	Surface Mount	150 pA	Instrumentation	8-SON (3x3)
Texas Instruments INA821IDR	4.5 V	2 V/µs	20 mA	600 µA	4.7 MHz	10 µV	1	8-SOIC	3.9 mm		36 V	125 °C	-40 °C	Surface Mount	150 pA	Instrumentation	8-SOIC
Texas Instruments INA821ID	4.5 V	2 V/µs	20 mA	600 µA	4.7 MHz	10 µV	1	8-SOIC	3.9 mm		36 V	125 °C	-40 °C	Surface Mount	150 pA	Instrumentation	8-SOIC
Texas Instruments INA821IDRGT	4.5 V	2 V/µs	20 mA	600 µA	4.7 MHz	10 µV	1	8-WFDFN Exposed Pad			36 V	125 °C	-40 °C	Surface Mount	150 pA	Instrumentation	8-SON (3x3)

Key Features

• 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/√HzBandwidth: 4.7 MHz (G = 1), 290 kHz (G = 100)Stable with 1-nF capacitive loadsInputs protected up to ±40 VCommon-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 VDual-supply: ±2.25 V to ±18 VSpecified temperature range: –40°C to +125°CPackages: 8-pin SOIC, VSSOP, and WSONLow offset voltage: 10 µV (typ), 35 µV (max)Gain drift: 5 ppm/°C (G = 1),35 ppm/°C (G > 1) (max)Noise: 7 nV/√HzBandwidth: 4.7 MHz (G = 1), 290 kHz (G = 100)Stable with 1-nF capacitive loadsInputs protected up to ±40 VCommon-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 VDual-supply: ±2.25 V to ±18 VSpecified temperature range: –40°C to +125°CPackages: 8-pin SOIC, VSSOP, and WSON

Description

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. 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.