TPL0102-100: channel-to-channel accuracy

Nobuhiko Wasa

Part Number: TPL0102-100

Tool/software:

Hi Team,

My customer is considering the following usage of TLP0102-100.

1. How can the customer estimate the gain tolerance (= ratio of resistance A and B)? Can it be calculated by Rtot.match and MATCHrm? If yes, could you please express the formula?
2. Is the connection of HB and LB/WB are correct, or needed to be inverted? (meaning should LB/WB be connected to negative input of the op-amp?)

Thanks,
Nobuhiko Wasa

over 1 year ago

0 Erin Bowrie over 1 year ago

TI__Genius 10340 points

Hi Nobuhiko-san,

Could you resend your image? It did not attach correctly.

Thanks,
Erin

0 Nobuhiko Wasa over 1 year ago in reply to Erin Bowrie

TI__Intellectual 1050 points

Hi Erin,

Does this work?

Thanks,
Nobuhiko Wasa

+1 Katlynne Jones over 1 year ago in reply to Nobuhiko Wasa

TI__Mastermind 42043 points

Hi Nobuhiko-san,

This connection is fine. With the Wiper and low terminal connected, the resistance will be 100k when the digital code is 0, and the resistance will be 0.3 when the digital code is 255 (full-scale):

If you would like code 0 to correspond to 0 resistance, the wiper should be connected to the high terminal.

Best,

Katlynne Jones

0 Nobuhiko Wasa over 1 year ago in reply to Katlynne Jones

TI__Intellectual 1050 points

Thank you, Katlynne!

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TPL0102-100: channel-to-channel accuracy