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en:adcaudio [2018/12/17 14:52] (current)
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 +====== ​ Analog-to-digital converter for audio signals - ADCaudio01B ======
  
 +ADCaudio01B is an innovated version of an older module, with an already integrated crystal oscillator that eliminates the need for a further module that served as an external generator of a sampling clock. It uses ADC [[https://​www.cirrus.com/​products/​wm8786/​|WM8786]].
 +
 +The main parameters are as follows:
 +  * Sampling frequency 8 - 192 kHz
 + * Distortion - 102 dB
 + * I²S  interface
 + * 24 bit resolution
 + * SNR 111 dB
 +
 +===== ADCaudio01A =====
 +
 +For testing purposes we used module [en:​usbi2s|USBI2S01A]] as a host. 
 +
 +For CP2114, a configuration 0 works without a further setting up - so in case of CS42L55
 +
 +  * DACSEL0 az DACSEL3 = L
 +
 +For WM8786 a following configuration is functional:
 +  * MS0 = L
 +  * AUDIOF0 = L
 +  * AUDIOF1 = H
 +  * OSR0 = 0
 +  * OSR1 = 0
 +
 +
 +Board as connected as followed:
 +
 +^ ADCaudio01A ^ direction ^ USBI2S01A ^ 
 +| MCLK | <= | MCLK |
 +| BCLK | <= | SCK  |
 +| LRCLK |<= | LRCK |
 +| DOUT | => | SDIN |
 +
 +
 +**// There seems to be a crosstalk between L and R channel.//​**
 +
 +===== Alternatives in circuits =====
 +
 +  * [[http://​www.cirrus.com/​en/​products/​cs5364-66-68.html|cs5364]]
 +
 +===== Related constructions and modules =====
 +
 +  * [[en:​usbi2s]]
 +  * [[en:​audiointerface]]
 +  * [[en:​sdr-widget|]]
 +
 +
 +===== References =====
 +
 +  * [[http://​www.netams.com/​~anton/​usb-adc/​|Two-channel Analog-to-Digital converter board with USB interface]]
 +  * [[http://​www.cirrus.com/​en/​products/​cs5364-66-68.html|CS5364/​66/​68]]
en/adcaudio.txt · Last modified: 2018/12/17 14:52 (external edit)