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PGA308: Best Amplifier for Strain Gauge signal conditioning

Armaan Panthaki
Prodigy 10 points
Part Number: PGA308

Hi,

I am trying to design a system to obtain the strain of a suspension system on an off-road baja vehicle, I was wondering if the PG308 would be the right amplifier to use for dynamic forces with large impulses. Would any additional circuits be needed or would the stain gauge directly input into the amp, with an analog out?

Thanks

  • 0
    TI__Genius 12510 points
    Hi Armaan,
    PGA308 is better optimized for DC accuracy, with an auto-zero PGA and a lower bandwidth (400kHz at G=4, 10kHz at G=1600) and slew rate (.6V/µs). It can also be calibrated to adjust for gain and offset characteristics of a bridge sensor.

    What is a typical transient from one of your strain gauges (in terms of slew rate and frequency)? How much gain do you need to apply to the signal? With more detail on these questions, we may be able to better recommend a suitable amplifier for this application.
  • 0 in reply to Alex Davis
    TI__Genius 11135 points
    Armaan

    Were you able to resolve your issue? If not post another reply below. Please include additional information as requested by Alex in the response above.

    Thanks
    Dennis