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INA203: input filtering

K.Yaita
Guru 29690 points
Part Number: INA203

Hi Team,

My customer considers to use INA203 for his new design.

I believe it is ideal for preparing PAD for Rfilter x2 and Cfilter in test production.
In this case, is there recommended default value for Rfilter and Cfilter?



Best Regards,
Yaita / Japan disty

  • 0
    TI__Expert 4915 points

    Hi Yaita,

    You can populate them should you require a given attenuation, at a given frequency as as per formula shown on figure 35.

    As a rule of thumb you should leave space on your PCB for these components for final circuit tuning, but by default they are not required. As such: R Filter = 0R and C Filter is not populated. The device has a slew rate of 1V/uS which, on its own, already provides some inherent high frequency noise rejection.