INA819

• Low offset voltage: 10 µV (typ), 35 µV (max)
• Gain drift: 5 ppm/°C (G = 1),
  35 ppm/°C (G > 1) (max)
• Noise: 8 nV/√Hz
• Bandwidth: 2 MHz (G = 1), 270 kHz (G = 100)
• Stable with 1-nF capacitive loads
• Inputs protected up to ±60 V
• Common-mode rejection: 110 dB, G = 10 (min)
• Power supply rejection: 110 dB, G = 1 (min)
• Supply current: 385 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, WSON

The INA819 is a high-precision instrumentation amplifier that offers low power consumption and operates over a very wide single-supply or dual-supply range. A single external resistor sets any gain from 1 to 10,000. The device offers high precision as a result of super-beta input transistors, which provide exceptionally low input offset voltage, offset voltage drift, input bias current, input voltage, and current noise. Additional circuitry protects the inputs against overvoltage up to ±60 V.

The INA819 is optimized to provide a high common-mode rejection ratio. At G = 1, the common-mode rejection ratio exceeds 90 dB across the full input common-mode range. The device is designed for low-voltage operation from a 4.5-V single supply, as well as dual supplies up to ±18 V.

The INA819 is available in 8-pin SOIC, VSSOP, and WSON packages, and is specified over the –40°C to +125°C temperature range.