Originally Posted by Pramod Kumar
I would like to make a portable (battery powered) mic preamp based on the IC THAT1510. I am attaching the basic preamp circuit given in the THAT1510 data sheet. This circuit is for a mic with a balanced output. Can someone please suggest what modifications are required in the circuit to make it work with unbalanced output from an electret mic capsule. Also, is it possible to further modify the circuit to make it work on a single 9 volt battery? Thanks in advance.
The That 1510 Has an UN-Ballanced output but a Diferential Ballanced input....The Chip should work fine with a Unballanced mic but I do not think you are going to get very good performance if you try running it off of a single 9v Battery ,I would use at least two 9v Batteries or maybe some sort of DC -Dc Converter to get a +/- supply......
If you want to make a Basic portable Mic preamp then I suggest useing a Low Power Fet input opamp like a TL082 but make sure that the Output is Cap coupled to block the DC Offset.....