INA821 - Texas Instruments

INA821 Precision Instrumentation Amplifier

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 c.

Features

•1 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 2 Applications
• Analog input module
• Flow transmitter
• Battery test
• L.