INA163: Unbalanced input

Hi Robert,

the unbalanced input only for microphone signals or for line signals as well?

Kai

Kai, thanks for the response. The unbalanced input signal will be microphone level as well, nothing more than a few millivolts. I know of one manufacturer who uses the INA163 as the first gain stage of a phono preamp using only an unbalanced input with very good results, I've looked for a schematic of their application but I've had no luck. My expertise is in the area of vacuum tubes and discrete circuitry, I'm just trying to simplify things a little these days. 

Hi Robert,

If you expected a DC-coupled unbalanced input, you can try with the below schematic.

But, if you need an AC-coupled unbalanced input, please refer to the below schematic.

If you can use the spice simulator TINA-TI, I will also attach those simulation files.

Thank you and Best regards,
Iwata ETsuji

Thank you Iwata, that would be great.