[sdiy] Good 16 bits A/D choice for mono audio recording

[Jay Schwichtenberg]

You could probably pick up a cheap audio codec or adc a lot cheaper than a
regular SPI 16 bit adc. That will probably have a I2S interface and
left/right LSB/MSB intefaces. That along with a dsPIC and should work well.

Check out the audio portions of Texas Instruments (Burr Brown), Cirrus,
Analog Devices and AKM for converters.

Jay S.


-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl]On Behalf Of
jean-pierre.desrochers at ville.quebec.qc.ca
Sent: Friday, May 25, 2007 6:36 AM
To: synth-diy at dropmix.xs4all.nl
Subject: [sdiy] Good 16 bits A/D choice for mono audio recording



Hi list,

I need to build a remote circuit that
will be installed in a remote forest region
in Canada. It will be similar to a datalogger
type of application but the unit will record
mono audio 16bits/44ksample sec. for a specified
amount of time in a SD memory card.
The audio data will then be downloaded via cellular modem.

I need to pick a good A/D converter for sampling
the surrounding audio. I found the Analog Devices AD7684.
It shows a suitable S/N ratio and is single supply
like I need.
Any suggestion for other A/D's would be welcomed.
Thanks,
Jean-Pierre Desrochers


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