The full model of the TV would be required. But for a microphone the audio level would be too low for all TVs I know. You would try adding a Mic Pre-Amp to the setup which would be wired like:
Mic-> Pre-Amp-> TV audio input.
I need help to connect a wired mic to the TV for karaoke. I have a adaptor to convert the jack to a 3.5mm and a Sony Bravia TV