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TPS7A83A: No External Bias, Bias pin floating or connecting to a capacitor?

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Replies: 2

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Part Number: TPS7A83A

Hello Team,

May I confirm with you that with no external bias, the correct connection of bias pin is floating or connecting it to a capacitor?

In Figure 48. ANY-OUT Configuration Circuit (no external bias) the bias pin connects to a external capacitor; however in 6.3 Recommended Operating Conditions note (3) it said If BIAS is not used, a capacitor on the BIAS pin is not needed. But I am not sure best connection to bias pin when there is no external bias.

Thank you!

Regards,

Ting

 

  • Hi Ting, 

    Figure 48 is misplaced and it also shows the application with an external bias and with the external supply on bias, a capacitor is required. For your question, if no external bias is used, you can have bias pin floating or tied to ground and a capacitor is not needed.

    Regards, 
    Jason Song

    Please click the "Resolved" link at the bottom of this post if I have answered your question.

  • In reply to Jason Song:

    Hello Jason,

    Thank you for helping!

    Regards,
    Ting

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