D/A converter

[YahooArchive]

Hi,

I am looking for a recommendation for 2-4 channels D/A converter for the
ARMmite.

Use Case: Automotive signal processing

Input signal 0-4.1V for the system. Need to follow 2 independent signals and
based on other inputs like rpm and speed need to modify the input signal (same
range 0-4.1V).

Looking for 10 bit resolution, 1 ms timing would be sufficient.

Fitting on the Armite development board would be a huge plus.

Also any recommendations as to how to communicate with that D/A converter (e.g.
I2C) would be very welcome.

Thx!

Oliver

[YahooArchive]

> Input signal 0-4.1V for the system. Need to follow 2 independent signals and
based on other inputs like rpm and speed need to modify the input signal (same
range 0-4.1V).
>
> Looking for 10 bit resolution, 1 ms timing would be sufficient.

The place to look would be either Digikey or websites of the semiconductor
vendors most of which have parametric tables where you can enter your
requirements.

You're going to be looking for a 5V serial D/A.

One candidate would be the AD5724. Though its a bit of an overkill speedwise.

[YahooArchive]

I was looking for one myself for 0-5V

This looks like a good family from National.

DAC08S085, DAC10S085, DAC12S085

You'd have to deal with SMT only versions, but for real low noise operation,
flying wires is not a good option, but boards can be built quite inexpensively
these days.

Since then I've used the ones from MicroChip, they come in an SOT-23 package.