INA188 - Texas Instruments

INA188 High-Voltage Instrumentation Amplifier

The INA188 is a precision instrumentation amplifier that uses TI proprietary auto-zeroing techniques to achieve low offset voltage, near-zero offset and gain drift, excellent linearity, and exceptionally low-noise density (12 nV/√Hz) that extends down to dc. The INA188 is optimized to provide excellent common-mode rejection of greater than 104 dB (G ≥ 10). S.

Features

•1 Excellent DC Performance:
  – Low Input Offset Voltage: 55 μV (max)
  – Low Input Offset Drift: 0.2 μV/°C (max)
  – High CMRR: 104 dB, G ≥ 10 (min)
• Low Input Noise:
  – 12 nV/√Hz at 1 kHz
  – 0.25 μVPP (0.1 Hz to 10 Hz)
• Wide Supply Range:
  – Single Supply: 4 V to 36 V
  – Dual Supply: ±2 V to ±18 V
• Gain Set with a Single External Resistor:
  – Gain Equation: G = 1 + (50 kΩ / RG)
  – Gain Error: 0.007%, G = 1
  – Gain Drift: 5 ppm/°C (max) G = 1
• Input Voltage: (V
  –) + 0.1 V to (V+)
  – 1.5 V
• RFI-Filtered Inputs
• Rail-to-Rail Output
• Low Quiescent Current: 1.4 mA
• Operating Temperature:
  –55°C to +150°.