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

Inventory: 895
Limit:  50

Quality information

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Packaging information

Package | Pins Package qty | Carrier Operating temperature range (°C)
WSON (DRG) | 8 3,000 | LARGE T&R
-40 to 125
Package | Pins WSON (DRG) | 8
Package qty | Carrier 3,000 | LARGE T&R
Operating temperature range (°C) -40 to 125
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Features for the INA821

  • 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 36V
    • Dual-supply: ±2.25 V to ±18V
  • Specified temperature range: –40°C to +125°C
  • Packages: 8-pin SOIC, VSSOP, and WSON

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Description for the INA821

The INA821 is a high-precision instrumentation amplifier that offers low powerconsumption and operates over a wide single-supply or dual-supply range. A single external resistorsets any gain from 1 to 10,000. The device has high precision as a result of super-beta inputtransistors, which provide low input offset voltage, offset voltage drift, input bias current, andinput 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, thecommon-mode rejection ratio exceeds 92 dB across the full input common-mode range. The device isdesigned for low-voltage operation from a 4.5-V single supply, and dual supplies up to ±18V.

The INA821 is available in 8-pin SOIC, VSSOP, and WSON packages, and is specified overthe –40°C to +125°C temperature range.


Qty Price (USD)
1-99 3.929
100-249 3.443
250-999 2.414
1,000+ 1.945