This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.


Other Parts Discussed in Thread: OPA657, TS12A4516

I have a photodiode amplifier circuit using OPA657. I'm thinking to use analog switch TS12A4516 to change the gain of amplifier.

The Rf resistor 50K in parallel with 5.5k with analog switch in series. when the switch is open, can I model the switch as a 50Mohm resistor? Will this resistor generates noise like typical resistor?