normally, what the operation frequency of op-amp for bandgap reference design? should we set it just around flicker noise freq (1kHz or 10kHz) or higher (1MHz or 10MHz)?
R u talking about the GBW of the opamp or something else?
if its BW of the opamp, then its compromised based on the gain, performance, current consumption, PSRR, area ... (normally PSRR will get affected @ high freq)
thanks for the response.
However, as we know in bandgap ref, there are no AC signal at the input of op-amp (except difference of voltage). If all the above parameters have been considered, do we need to design the op-amp at higher f3dB (eg. at 10MHz)?
thanks.