Old: A Direct-Coupled Input-Capacitorless Active Mic Preamp

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mediatechnology
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Re: A Direct-Coupled Input-Capacitorless Active Mic Preamp

Post by mediatechnology »

A quick update to this project...

I've now paired a THAT5173 gain controller to the 1570's flying rails. The 5173's 3V3 supply also flies and is derived from the flying positive rail.

With the 5173 the gain range is 0 dB to +60 or 10 dB to +70.

The 5173's SPI lines are opto-isolated from the grounded (not flying) USB-based gain controller CPU using Avago demo boards. http://www.avagotech.com/docs/AV02-3160EN

There's nothing very hard about doing this....
emrr
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Re: A Direct-Coupled Input-Capacitorless Active Mic Preamp

Post by emrr »

nice addition.
Best,

Doug Williams
Electromagnetic Radiation Recorders
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mediatechnology
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Re: A Direct-Coupled Input-Capacitorless Active Mic Preamp

Post by mediatechnology »

This thread is now locked.

Please visit the 2013 update to this project here
:

viewtopic.php?f=6&t=598
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