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AM401 ICs

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AM401 - Industrial Voltage Amplifier IC

AM401 is an amplifier IC for differential and single-ended input voltages suitable for industrial sensing and signal-conditioning applications. Its modular design, integrated reference voltage source and integrated protection functions allow a wide range of industrial applications.

AM401 and AM401P are universal voltage transmitters designed for differential bridge signal conditioning. The two devices differ in their offset and offset drift values. The ICs are modular and their functional units individually accessible. Both ICs consist of a high-precision instrumentation amplifier for differential input signals and an operational amplifier for input signals referenced to ground. A robust reference voltage source (adjustable between 5 and 10V) can be used to power external components. An operational amplifier stage whose gain is also adjustable acts as an output. The devices also contain an additional operational amplifier which can be used as a current or voltage source. The IC is protected against reverse polarity and has an integrated output current limit. Standard industrial voltages (e.g. 0–5/10V, 0.5–4.5V) can be easily generated using transmitter ICs AM401 and AM401P.

Applications

  • Sensor signal-conditioner
  • Adjustable voltage source
  • Front and back end IC for µC
  • Impedance converter
  • Protected output stage
  • Industrial process control

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