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MSPM0G1507: OPA Configurable Gain

Bailey Looper
Prodigy 280 points
Part Number: MSPM0G1507

Tool/software:

I wish to use internal OPA to consume the functionality of an op amp. However the gains listed in syscfg are all multiples of 2: 2x, 4x, 8x, 16x, 32x. Is there an option to configure a custom gain not listed here? Our desired gain is 20x, so wondering if that is a possibility.


Thanks!

  • +1
    TI__Mastermind 46435 points

    Hi,

    The internal PGA gain setting is limited with those settings. However, you can always treat the internal OPA as a independent OPA. You can add external resistors between the OPA_INx and OPA_OUT pins and set your circuit just as gain 20x. 

    Best regards,

    Cash Hao