TLV9352-Q1: input equivalent circuit

Akihiro Hirata

Expert 5740 points

Other Parts Discussed in Thread: TLV9352

Hello team,

There are specs about the input impedance.

Does this mean below? (Capacitance and Resistance are in parallel?)

Regards,

Hirata

3 months ago

0 Jerry Madalvanos 3 months ago

TI__Mastermind 28476 points

Hirata-san,

Yes.

Best,
Jerry

0 Akihiro Hirata 3 months ago in reply to Jerry Madalvanos

TI__Expert 5740 points

Jerry-san,

Thanks for your answer. I understood.

Let me ask one more question.

The modeling of the input impedance of this TLV9352 PSPICE model is exactly same as this resistor/capacitor network specified in datasheet(below)?

It looks very similar(almost same) but looks not exactly same so would like to know.

Regards,

Hirata

+1 Jerry Madalvanos 3 months ago in reply to Akihiro Hirata

TI__Mastermind 28476 points

Hey Hirata-san,

Differential impedance should be correctly modeled as the parallel resistor and capacitor with the correct values.

I'm fairly certain that the 6TOhm resistors are probably just 1T resistors, which are the standard placeholders. It might not make a difference in simulation as there is a minimum current specified in the simulator. Increasing a resistance from 1TOhm to 6TOhm will not make a difference.

Best,
Jerry

0 Akihiro Hirata 3 months ago in reply to Jerry Madalvanos

TI__Expert 5740 points

Hi Jerry-san,

Thanks for your insight. I understood.

I appreciate your support, as always.

Regards,

Hirata

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TLV9352-Q1: input equivalent circuit