Sorry for posting a duplicate message (
original), the forum said there was an error posting, so I did it again. Oops
The original text follows.I think about building a microphone with a (semi-) decent ECM cartridge (maybe
AOM-5024L-HD-R) and a preamp-compressor (probably
SSM2166 or
SSM2167) for use with a computer (a laptop).
Both the ECM and the preamp require power, and I'm not sure a typical computer TRRS socket is designed to supply enough current (the mentioned ECM operates at about 500 uA, while SSM2166 declares 7.5 mA [2.3 mA for SSM2167] consumption). A USB socket must be somewhere nearby, but using it for power only would yield an ugly device.
At this point I'm looking at a simple to use USB audio ADC / codec and virtually the only thing I found so far is
TI PCM29xx family of products, most of which are 2 in / 2 out devices, which feels like an overkill.
My main question is:
- Could you recommend a more minimalistic IC I can use for a single channel microphone?
I'm also a bit concerned about whether SSM2166/SSM2167 will output good quality sound. If you don't think it will and can recommend a better preamp-limiter IC or circuit, I'd appreciate that too.
Thank you for your time.