What is the jelly bean DAC du jour?
- From: Joerg <notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx>
- Date: Wed, 08 Nov 2006 19:04:54 GMT
Hello Folks,
Haven't used DACs in a while, did it with PWM all the time. Now I need to design something that requires lots of low noise DC levels to be set.
What is the common jelly-bean 8-bit multi-DAC with a serial bus these days?
The requirements would be the usual. Multi-sourced if possible, lots of channels, under 50c/channel or at least under $1/channel, 8 bits or more, serial bus with two or at the most three wires, speed can be in the low kHz range. A chip select would be nice but that could also be handled by gating logic.
I have seen some nice octal 8-bitters like the TLC5628 which unfortunately needs an extra load command line (but that would be ok). Don't know whether that one is a mainstream part and I want to avoid settling for a boutique part, which is why I am asking.
Then there'll be the challenge to bus the data to several dozen modules with the DACs on them but that's a whole 'nother matter. Got to wait until the guys tell me what the bus is going to be. Hopefully nothing that needs lots of arbitration.
--
Regards, Joerg
http://www.analogconsultants.com
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