I would like to connect an electric guitar to ADC (or MCU internal ADC input) in order to process signal digitally. I'm not sure right now which MCU or ADC I'm going to use, nevertheless I believe that connecting a guitar to such input without amplification isn't going to work well.
What is 'typical' voltage range on such input in MCU? I guess that my signal should oscillate between GND and Vcc, being centered at 0.5*Vcc (to achieve maximum resolution).
Please, let me know if I understand how it works correctly. There's an op amp in non-inverting configuration with gain equal to 10K/1K + 1. With the 47pF capactitor it's also a high pass filter. 100k resistors between GND and 5V provide 2,5V DC offset. I'm not sure about the role of both 10uF conds. What is their role if the circuit makes sense?
Is this circuit what I need in order to connect my guitar to MCU/ADC? What are other options?