OPA4189: Chopper frequency

Brian Wang0928

Genius 13090 points

Part Number: OPA4189

In the datasheet, it says the chopper frequency . How many frequency value in the chopper design?

0 Chris Featherstone over 1 year ago

Hello Brian,

It is just one frequency and it is 150kHz for the chopper clock.

We can find it from noise plot. You see a change in the plots at that frequency as highlighted below.

Let me know if you have any further questions.

Best Regards,

Chris Featherstone

Amplifiers forum