INA821 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.
INA821 Key Features
- 1 Low offset voltage: 10 µV (typ), 35 µV (max)
- Gain drift: 5 ppm/°C (G = 1)
- 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
- mon-mode rejection: 112 dB, G = 10 (min)
- Power supply rejection: 110 dB, G = 1 (min)
- Supply current: 650 µA (max)
- Supply range