Digital audio converter, from PCM I2S serial audio to S/PDIF with RCA, Toslink, or XLRDesigned by nihtila.com in United Kingdom
Features: Sample rate 48 kHz, 96 kHz, or 192 kHz I2S input; SPDIF TX is always I2S Master Supports Dual Mono mode with 2x nihtilacom ADC AK5572 AD-converters Two S/PDIF output connector options: Coa…Read More…
Fully tested board comes as in the photo with all components soldered.
More information and schematics are available at nihtila.com and video below.
Signal level is 3.3 V.
This board has I2S input and you should be familiar with the format prior to buying.
I2S consists of:
The board is always I2S Master.
Supply must not exceed 5.5 V.
There are jumper links to set the sample rate. Please see the factsheet for more information. Instructions are also on bottom side silkscreen of the PCB.
If still unclear, please drop me a message.
Note that some information is for older revision but the only change from v1.1 to v1.2 is slightly more space between RCA and Toslink, and v1.3 is green PCB.
Default configuration for the board is stereo, meaning normal stereo I2S stream.
Another option is dual mono where the board works with nihtilacom ADC AK5572 AD-converter in mono mode. Two of these can be connected on the input, and SPDIF TX creates one stereo S/PDIF from two mono ADCs. This version comes with significantly higher performance oscillator and therefore costs extra.
Choose one of the two options shown in photos. RCA and Toslink can be used simultaneously. XLR is so large that Toslink cannot be fitted onboard in that option.
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