bynonsun
Newbie level 1
I want to design a PGA using in front of the sigma-delta ADC. the ADC resolution is 20bit and works at 250kHz. the PGA's gain is 16.
how many should the gain and gain bandwidth product of OPA achieve?
I calculated it. The feedback factor is 0.059, error is 1/2^20, then the gain should be about 150dB and gain bandwidth product should be about 20MHz.
Should this design of the OPA follow it?
thanks!
how many should the gain and gain bandwidth product of OPA achieve?
I calculated it. The feedback factor is 0.059, error is 1/2^20, then the gain should be about 150dB and gain bandwidth product should be about 20MHz.
Should this design of the OPA follow it?
thanks!