Hello All
Im making an audio sampler using a TI PCM3008 and an STM32 microcontroller.
I am using the recommended circuit from the datasheet but Im not sure if i can send audio straight in or if I need to condition it first.
The datasheet says the Analog Input, Centre Voltage should be 0.5 VCC.
I am using 3.3 as VCC so does this mean I should be level shifting the incoming audio signal to make its centre point 0.5VCC before sending into the PCM3008?
What Im asking really is can I just send audio straight from a 3.5mm standard audio input socket straight into the 'A/D IN Right Channel IN & Left Channel IN' inputs on page 13 of the PCM3008 datasheet.
Maybe I'm overthinking this but I would really appreciate any thoughts anyone may have before I commit to making a pcb.
Many Thanks