Other Parts Discussed in Thread: LMV796
I'm designing a circuit that is using the PCM2903 Audio Converter with a preamp built from the reference design TIDU765. When recording audio and playing it back there is a noticeable hissing/noise in with the recorded audio. For the Electret Microphone preamp circuit I am using an LMV796 opamp since the circuit is running on 5V (being powered from USB). Originally I thought the noise was coming from the USB port and so I connected the VCC of the mic preamp to the +3.3V output from a TPS73033DBVR LDO, but I'm still getting the noise.
Any suggestions on how to reduce the noise from the microphone?