TLV9352: open-loop output impedance

Nate Gil

Part Number: TLV9352

Hi,

I'm simulating TLV9352 and I've found that the open-loop output impedance is significantly different than the one on the datasheet.

e.g. at 1kHz I'm seeing 800R vs 650R

over 4 years ago

0 Ron Michallick over 4 years ago

TI__Guru**** 174826 points

Helo Nate,

Considering the range of all Zo for all op amps. The difference is minor and pessimistic which might have been the goal of the model maker.

Fortunately the author is listed in the model, so I will ask him. It is late Friday, so up to four days may be needed for an update.

0 Ron Michallick over 4 years ago in reply to Ron Michallick

TI__Guru**** 174826 points

Nate,

The model does reflect the design data. This just transfers the difference to the data sheet. Later this week, I can test a sample to see which result may be closer. I'll have sample data by end of day Wednesday.

+1 Ron Michallick over 4 years ago in reply to Ron Michallick

TI__Guru**** 174826 points

Nate,

Sample data (below) is close to simulation model. Simulation for model is correct.

1kHz to 10MHz data recorded, one sample.

I'll report the data sheet being different.

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TLV9352: open-loop output impedance