[ OPA192 ] Output Impedance

Kenichiro

Other Parts Discussed in Thread: OPA192, TINA-TI, TIPD189

[ OPA192 ] Output Impedance

Hi,

Can you please let me know the output impedance of OPA192 under following conditions?

* OPA192
* Gain = 3
* Frequency: DC to 1MHz

I tried to simulate this with my TINA-TI, however my TINA-TI does not include the impedance meter as its default.
Thus, I copied and pasted impedance meter based on the TIPD189 and its app. note.

Headphone Amplifier for Voltage-Output Audio DACs Reference Design
www.ti.com/.../TIPD189

Now I tried to run, but simulation aborted due to some errors below.

Can anyone help me to run simulation successfully?
I attached my TINA-TI simulation file below. (RC value has not been modified yet, though).

Thanks for your help in advance.
Regards,
Ken

160602-OPA192-OutputImpedance.TSC

over 8 years ago

0 Marek Lis over 8 years ago

TI__Guru 62310 points

Below please find the configuration and the simulation results of the Open-Loop output impedance and Close-Loop output impedance, respectively. I have also attached Tina schematic for your simulation - in order to read the value in ohms, you must change the vertical scale from Linear-dB to logarithmic.

OPA192 Close-Loop OutputImpedance.TSC

0 Kenichiro over 8 years ago in reply to Marek Lis

Mastermind 9165 points

Hi Marek,

It' you!I did join the precision lab seminar in Japan two weeks ago. Thank you for coupons, hehehe.

Your answer is really helpful, now I run my simulation with TINA-TI and this can be used for other case.

Thanks and have a great weekend.
Regards,
Ken

0 Marek Lis over 8 years ago in reply to Kenichiro

TI__Guru 62310 points

Hi Ken,

I'm glad to hear that this answered your question and that you enjoyed our TIPL seminar in Japan.
If you need any further assistance, don't hesitate to ask using our E2E forum.

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[ OPA192 ] Output Impedance

[ OPA192 ] Output Impedance