How to match current feedback amplifiers impedance

Darren Xu

Prodigy 80 points

what is the current feedback operational amplifiers input and output impedance；

and how can i match the circuit to 50 ohm

I used ADS to simulate the operational amplifier circuit but it shows much attenuation about -60db

over 8 years ago

0 Rohit Bhat over 8 years ago

TI__Genius 15975 points

Hi Darren,

For simulating in ADS for 50-ohm input and output match, you should make the impedance (Z) of Term 1 and Term 2 as 50-ohms as well. This way all the S-parameter calculations are with respect to a particular characteristic impedance (Z0) of 50-ohms in your case.

Best Regards,
Rohit

0 Darren Xu over 8 years ago in reply to Rohit Bhat

Prodigy 80 points

Hi Rohit,
Thank you for reply ,if I set the Term to 50ohm ，but how can I add my input impedance and output impedance on.

0 Darren Xu over 8 years ago in reply to Darren Xu

Prodigy 80 points

is this correct?

Thank you a lot.

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How to match current feedback amplifiers impedance