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PGA281 Datasheet Programmable Gain Instrumentation Amplifier

Manufacturer: Texas Instruments

Overview: PGA281 www.ti.com SBOS664A – MARCH 2013 – REVISED JUNE 2013 Precision, Zero-Drift, High-Voltage, Programmable Gain Instrumentation Amplifier Check for Samples:.

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General Description

The PGA281 is a high-precision instrumentation amplifier with a digitally-controllable gain and signalintegrity test capability.

This device uses proprietary autozeroing techniques to offer low offset voltage, near-zero offset and gain drift, excellent linearity, and nearly no 1/f noise.

The PGA281 is optimized to provide an excellent common-mode rejection of greater than 110 dB (G = 1) over a wide frequency range.

Key Features

  • 1.
  • 234 Wide Input Range: ±15.5 V at ±18 V Supply.
  • Binary Gain Steps: 128 V/V to ⅛ V/V.
  • Additional Scaling Factor: 1 V/V and 1⅜ V/V.
  • Low Offset Voltage: 5 μV at G = 128.
  • Near-Zero Long-Term Drift of Offset Voltage.
  • Near-Zero Gain Drift: 0.5 ppm/°C.
  • Excellent Linearity: 1.5 ppm.
  • Excellent CMRR: 140 dB.
  • High Input Impedance.
  • Very Low 1/f Noise.
  • Differential Signal Output.
  • Overload Detection.

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