Re: Cheap 12 bit DAC and ADC's

Martin Riddle wrote:
"John Larkin" <jjSNIPlarkin@xxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message news:t69465hsv9uugi3nknopg812toq8b9ofe3@xxxxxxxxxx
On Sat, 18 Jul 2009 15:30:31 -0400, "Martin Riddle"
<martin_rid@xxxxxxxxxxx> wrote:

I'm looking for a cheap 5v Rail buffered output 12bit DAC
And a 12bit ADC (8 channel).

Any recommendations?

Cheers

For the ADC, maybe an ADS7866 and an HC4051?

John


I should have mentioned SPI, But I think the AD7927 is the one, half the cost of the LT part we are using now.


That falls under "cheap"? Hmm, you guys leave too much money on the table :-)


The are some Dacs that are priced right from analog too.

If I had extra port pins then the Mux I would play around with, but thats not an option.


At that cost I'd consider muxing the SPI stream so you can hang a register onto the SPI that rotates through the ADC channels. Not an option for the DACs though.

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