Hi all,
I am trying to amplify a signal and prep it for use with an ADC. Unfortunately, I am having difficulty centering the voltage in the 0 to +5V range. From what I have read, all it takes is a simple summer op-amp circuit that uses a voltage divider to cut the input voltage in half and add it to the input signal.
Below I have attached a diagram of what I have come up with thus far: A simple non-inverting rig that should amplify the signal by ~32x and center it between 0 to +5V. Unfortunately, when I run simulations, the output voltage is still partially negative and saturates in the negative.
Also, another quick question: does anyone know of a cheap usb-capable ADC converter capable of handling audio with decent resolution? I have considered the arduino, however it seems limited to recording a clap or similar.
Thanks for the help!
I am trying to amplify a signal and prep it for use with an ADC. Unfortunately, I am having difficulty centering the voltage in the 0 to +5V range. From what I have read, all it takes is a simple summer op-amp circuit that uses a voltage divider to cut the input voltage in half and add it to the input signal.
Below I have attached a diagram of what I have come up with thus far: A simple non-inverting rig that should amplify the signal by ~32x and center it between 0 to +5V. Unfortunately, when I run simulations, the output voltage is still partially negative and saturates in the negative.
Also, another quick question: does anyone know of a cheap usb-capable ADC converter capable of handling audio with decent resolution? I have considered the arduino, however it seems limited to recording a clap or similar.
Thanks for the help!
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