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  • TI Thinks Resolved

DAC121S101QML-SP: Output Noise Spectral Density plot: need data up to 200MHz

Part Number: DAC121S101QML-SP

I have the Output Noise Spectral Density plot for this DAC but it only goes up to 100kHz.  I need data up to 200MHz.  Can you provide this?

  • Hello Erik,

    I thinnk there may be a mistake in the product name or what is being requested.   The DAC121S101QML-SP is a precision digital to analog converter with a maximum SPI clocking rate of 20 MHz for a maximum conversion speed of 1.25 MHz.  

    Please let me know if you have addiational details about this.

    Kirby 

  • In reply to Kirby Kruckmeyer96848:

    I wanted to get noise data beyond 100kHz. Is there any for this part?
  • In reply to Erik Laurila:

    Any status?
  • In reply to Erik Laurila:

    Hello Erik,
    I wanted to be sure we are talking about the same product and exactly what you want.. You mention that you have data noise data to 100 kHz. Where did you get that data and can you share it?
  • In reply to Kirby Kruckmeyer96848:

    I was told that TI provided this Output Noise Density Plot for the DAC.  Note how it ends at 100KHz.

  • In reply to Erik Laurila:

    Thank you for the clarification. This plot was for the commercial version of the part. The space grade version of the part uses a different die with a different design for radiation hardness. The behavior of the space grade part is likely to be similar.

    The only noise information we have for the space grade part is some simulations:
    Sim Condition: VDD=5V, 25 deg C, code=2048

    Spot Noise (output, volts squared)
    1 Hz 1.87 e-12
    10 Hz 2.88 e-13
    100 Hz 4.5 e-14
    1kHz 7.3 e-15

    Integrated noise (output, volts squared)
    1Hz-100 MHz 1.47e-8

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