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USB Audio DAC with PCM2704
Posted on Friday, April 9, 2010   •   Category: Audio DAC

USB Audio DAC with PCM2704

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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USB Audio DAC with PCM2704

 

Build Accurate LC Meter and start making your own coils and inductors. This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils. LC Meter can measure inductances starting from 10nH - 1000nH, 1uH - 1000uH, 1mH - 100mH and capacitances from 0.1pF up to 900nF. The circuit includes an auto ranging and reset function to make sure the readings are as accurate as possible ... [more]



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