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12BIT DAC

eli
Guru 13485 points

Other Parts Discussed in Thread: DAC714, DAC7731, DAC8811, DAC7512

Looking for a DAC, 12bit (or higher)SPI interface,single chanel,with output voltage range of +/-10V.

I found the DAC714/DAC7731,but these are old and  in large package .

Any other recomendation?

  • 0
    TI__Mastermind 46290 points

    Eli,

    Is it a requirement that the DAC "natively" outputs the +/-10V signal? There's certainly some methods to generate external circuitry to condition the DAC output to the correct range. This is a pretty common method to achieve the desired output which will open up your range of possible devices.

    What package is most ideal for you? DAC8811 has a smaller package and the EVM can be pretty easily modified to create a +/-10V signal. 

  • 0 in reply to Kevin Duke
    Guru 13485 points

    Hi,

    Today customer using our DAC7512 (+ OP-AMP from LTC, p/n  LT1112, but they face high output offset.

    This is the reason they think to use other DAC  that has the capability of  +/-10V.

    Other solution is to use different amp.

  • 0 in reply to eli
    TI__Mastermind 46290 points

    Eli,

    If the DAC itself needs to be able to swing +/-10V without external conditioning then our choices are limited. The DAC7731 would seem to be a pretty nice fit here to me, especially given the benefits of the calibration features it brings to the table...

    I'll stew on this for a bit and see if I can come up with something smaller