Posted on Friday, April 9, 2010 • Category: Audio DAC
I needed high quality DAC convertor from USB to S/PDIF. Circuit has analog output for headphones and digital S/PDIF output with electrical and optical(TOSLINK) interface. We can use too 3 HID buttons for setting volume and mute. For USB input is used standard miniUSB connector. Headphone output uses standard 3.5" stereo jack socket. For signal conversion from TTL level to differential signal is used RS-485 bus transceiver. For optical output is used optical transmitter TOTX173 from Toshiba.
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