Is it important to consider GBP of transimpedance amplifier while choosing feedback resistor?

Thread Starter


Joined Mar 24, 2021
Hello, I have designed a circuit which uses AD8630 transimpadance amplifier to amplify incoming current to voltage. The GBP of this amplifier is 2.5 MHz and I'm thinking using 5 mega ohm or 10 mega ohm as a feedback resistor instead of 1 mega ohm so that I can further increase the amplification. Is it feasible to use 5 or 10 mega ohm resistor? will it have any consequence on the performance of the circuit. Kindly share your thoughts. I have attached the circuit below.