High Voltage Input Instrumentation Amplier

Hello,

I'm trying to find a instrumentation amplifier with very CMR and support input signals from a dual supply source of +/-15VDC.  The voltage output of the amplifier would be limited to a single ended signal. (0 - 5V)

Currently, using a INA129 (from TI) but need something that can provide the limited output and support single supply operation.

Essentially, is there an ADI part that has the high CMR and input protection like the INA129 but can run off a single supply and get really really close to the those rails?

Thanks

Terry

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  • Hi Terry,

    In response to your inquiry about the AD8420, it has not released yet, but if your design schedule allows it I believe it would also be a very good choice for your design. It has high input-protection, allows for single-supply operation, and output voltage is completely independent of common-mode voltage. If you should decide this is your best option, the AD8420 is sampling now and we're planning a release within the next 3-6 months.

    Best regards,

    Scott

Reply
  • Hi Terry,

    In response to your inquiry about the AD8420, it has not released yet, but if your design schedule allows it I believe it would also be a very good choice for your design. It has high input-protection, allows for single-supply operation, and output voltage is completely independent of common-mode voltage. If you should decide this is your best option, the AD8420 is sampling now and we're planning a release within the next 3-6 months.

    Best regards,

    Scott

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