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DAC5675: Bipolar output

Jingtai
Genius 4575 points

Part Number: DAC5675
Other Parts Discussed in Thread: DAC2932, , TIDA-00684, TIPD125, TIDA-00075

Our application is to output both 0-10V and +/-10V signals, not at the same time, now we have the Launchxl-F28377S already on which the buffered DAC is unipolar output, is it possible to connect some amplifiers to become bipolar output? Otherwise the on chip DAC will be given up and a bipolar output DAC will be required. But I can't find out any DACs in high speed DAC family, such as DAC5675, DAC2932 etc. Are high speed DACs suitable to this kind of application?

  • 0
    TI__Mastermind 20541 points

    Hi Jingtai,

    This TI design is from precision data converter group it show how to convert unipolar output of the DAC to bipolar.

    However if you want to use high speed DAC with high output voltage swing, please refer to following ti designs.

    Regards,

    Neeraj Gill

  • 0 in reply to Neeraj Gill
    Genius 4575 points
    Thanks for your support. TIPD125 is a bipolar output configuration except its lower converting speed. TIDA-00684 and TIDA-00075 convert at higher speed but they are unipolar output thus are not able to output +/-10V. Are there any solutions at higher speed and with bipolar output. Our original signal to ADC is 10 MHz sine wave therefore it seems DAC 8760 is not faster enough.
  • 0 in reply to Neeraj Gill
    Genius 4575 points
    I just find out TIDU129 in which the external operational amplifier supplier is +/-15V. I'll check whether it is bipolar output.