Re: serial DACs

On Wed, 17 Dec 1997 14:18:27 -0800 (PST), aek (Al Kossow) wrote:

>
>"I wasn't able to find any serial DACs (I didn't do all that
>> thorough of a search) that worked at this speed, you might have to stick with
>> parallel loaded DACs."
>
>Joe will probably pop in here, being from Crystal and all..
>
>We use Crystal's 16 bit serially interfaced parts for the audio I/O on
>Macs, and those are running up to 48Khz/channel. Guess I'll have to
>double-check on the maximum clock speed of the Maxim multi-channel
>DAC i'm designing into the programmable power supplies on the board
>i'm doing :-)

For 12 bit resolution were going to need a 12 bit DAC that can be fully updated
at about 6mhz. So assuming no register addressing overhead, that many of the
DACs require, the serial data must be clocked at 72mhz. Any internal addressing
needed to operate the DAC will increase this value. Good luck!

-Zonn

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Received on Wed Dec 17 14:44:49 1997