Integrated Circuits (ICs)

INA821IDR

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HIGH BANDWIDTH (4.7MHZ), LOW NOISE (7NV/√HZ), PRECISION (35ΜV), LOW-POWER, INSTRUMENTATION AMP

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DocumentsWhat is an instrumentation amplifier?Designing an Accurate, Multifunction Lithium-Ion Battery-Testing Solution +12

Integrated Circuits (ICs)

INA821IDR

Active

Texas Instruments

HIGH BANDWIDTH (4.7MHZ), LOW NOISE (7NV/√HZ), PRECISION (35ΜV), LOW-POWER, INSTRUMENTATION AMP

Deep-Dive with AI

DocumentsWhat is an instrumentation amplifier?Designing an Accurate, Multifunction Lithium-Ion Battery-Testing Solution +12

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	INA821IDR

-3db Bandwidth	4.7 MHz
Amplifier Type	Instrumentation
Current - Input Bias	150 pA
Current - Output / Channel	20 mA
Current - Supply	600 µA
Mounting Type	Surface Mount
Number of Circuits	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Package / Case	8-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Slew Rate	2 V/µs
Supplier Device Package	8-SOIC
Voltage - Input Offset	10 µV
Voltage - Supply Span (Max) [Max]	36 V
Voltage - Supply Span (Min) [Min]	4.5 V

INA821 Series

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

Part	Number of Circuits	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Input Offset	Voltage - Supply Span (Max) [Max]	-3db Bandwidth	Supplier Device Package	Slew Rate	Package / Case	Amplifier Type	Mounting Type	Current - Input Bias	Current - Supply	Current - Output / Channel	Voltage - Supply Span (Min) [Min]	Package / Case [y]	Package / Case [x]	Package / Case [custom]	Package / Case
Texas Instruments INA821IDRGR	1	-40 °C	125 °C	10 µV	36 V	4.7 MHz	8-SON (3x3)	2 V/µs	8-WFDFN Exposed Pad	Instrumentation	Surface Mount	150 pA	600 µA	20 mA	4.5 V
Texas Instruments INA821IDRGT	1	-40 °C	125 °C	10 µV	36 V	4.7 MHz	8-SON (3x3)	2 V/µs	8-WFDFN Exposed Pad	Instrumentation	Surface Mount	150 pA	600 µA	20 mA	4.5 V
Texas Instruments INA821IDR	1	-40 °C	125 °C	10 µV	36 V	4.7 MHz	8-SOIC	2 V/µs	8-SOIC	Instrumentation	Surface Mount	150 pA	600 µA	20 mA	4.5 V	3.9 mm	0.154 in
Texas Instruments INA821IDGKT	1	-40 °C	125 °C	40 µV	36 V	4.7 MHz		2 V/µs	8-MSOP 8-TSSOP	Instrumentation	Surface Mount	150 pA	600 µA	20 mA	4.5 V			0.118 in	3 mm
Texas Instruments INA821ID	1	-40 °C	125 °C	10 µV	36 V	4.7 MHz	8-SOIC	2 V/µs	8-SOIC	Instrumentation	Surface Mount	150 pA	600 µA	20 mA	4.5 V	3.9 mm	0.154 in

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Arrow	N/A	2500	$ 2.70
Digikey	Cut Tape (CT)	1	$ 5.47
		10	$ 4.91
		25	$ 4.64
		100	$ 4.02
		250	$ 3.82
		500	$ 3.42
		1000	$ 2.89
	Digi-Reel®	1	$ 5.47
		10	$ 4.91
		25	$ 4.64
		100	$ 4.02
		250	$ 3.82
		500	$ 3.42
		1000	$ 2.89
	Tape & Reel (TR)	2500	$ 2.74
Texas Instruments	LARGE T&R	1	$ 3.76
		100	$ 3.06
		250	$ 2.41
		1000	$ 2.04

Description

General part information

INA821 Series

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.