LMH6629: Output impedance for in the loop compensation

Philip Tan

Part Number: LMH6629

Hi TI forums,

How can I find the output impedance of the LMH6629? I am having issues with it being unstable (set to a closed loop gain of 40). I'd like to try in the loop compensation, which needs an estimate of the output resistance of the op amp.

Thank you,

over 1 year ago

+1 Ignacio Vazquez Lam1 over 1 year ago

TI__Genius 11675 points

Hi Philip,

Unfortunately, we do not have any ROUT simulations for this device, however a designer was able to look into the design and based on the output stage configuration the ROUT value should be very close to zero.

Best Regards,

Ignacio

0 Philip Tan over 1 year ago in reply to Ignacio Vazquez Lam1

Prodigy 10 points

Got it, thank you. Marking as resolved.

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LMH6629: Output impedance for in the loop compensation