TSV912: Stability of a Differential Amplifier

Manohar,

The TSV912 model accurately models stability. You can perform a stability analysis in TINA-TI or PSpice for TI using the following tutorial.

https://training.ti.com/ti-precision-labs-op-amps-stability-spice-simulation 

TINA-TI and PSpice for TI can be downloaded at their respective links below:

https://www.ti.com/tool/TINA-TI 

https://www.ti.com/tool/PSPICE-FOR-TI

Best,
Jerry

Hi Manohar,

no, it's not stable, unfortunately:

manohar_tsv912.TSC

But you can add a phase lead capacitance C1 to restore the phase margin again:

C2 should also be added to not degrade the balance of this differential amplifier.

Feel free to increase C1 and C2, but keep these both caps identical to not degrade the balance. For the same reason choose low toleranced and stable parts for all these feedback components.

Kai

Hi Kai,

Thanks for the Above information, Please Confirm Same Circuit will Stable for 1KHz Bandwidth with 1Mega Ohm Resistance, Can you Please explain Why you are Using Below Circuit In between Input

Regards,

Manohar

Hi Kai,

Thank u For Your Valuable Information.

Regards,

Manohar S

Good luck