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ADC161S626: Seems to be a wrong TINA-TI model

ArTzy
Genius 15009 points
Part Number: ADC161S626
Other Parts Discussed in Thread: ADS8325, TINA-TI

Hi Experts,

Seeking your assistance on this query:

I'm a TINA-TI customer user, version n 9.3.200.277 SF-TI and I was studying some model simulations. Looking for the best similar ADC I discovered that ADC161S626 is closest to the one I intend to use (ADS8325) but the spice model provided to ADC161S626 which comes with TINA-TI basic version, seems to be a wrong model. 

I'd appreciate if your team could take a look at this ADC model available with TINA and verify it is really a wrong model or if you can provide a correct TSC file for the AC161S626 model.

I attached a print screen from my TINA Software

Regards,
Archie A.

  • 0
    TI__Mastermind 24940 points

    Hello,

    Why do you believe it is the wrong model?

    I suggest using the second item listed in the design tools & simulations sections. 

    This will provide an entire setup for the device, as well as a DAQ that will provide an analog measurement. 

    Regards,

    Cynthia

  • 0 in reply to Cynthia
    TI__Genius 15009 points

    Hi Cynthia,

    Cx just wondering why the ADS TENA model does not follow the spec doc (ADC161S626 16-Bit, 50 to 250 kSPS, Differential Input, MicroPower ADC datasheet (Rev. D)).

    Might be a misunderstanding how this ADS was modeled? Spec has a serial output and TENA model has 16 bit output represented instead of a serial output? Also there is no SPI to interface to another spi controller?

    Please if you can clarify, I will appreciate it.

    Thank you.

    Regards,
    Archie A.

  • 0 in reply to ArTzy
    TI__Mastermind 24940 points

    Archie, 

    These models are to demonstrate the analog performance of the device. Due to the nature/limitations of TINA, which is a purely analog simulator, thus it is not possible to model digital aspects of our devices, such as  an SPI bus.  

    We have gone through different methods to try to model our ADC outputs. One method outputs an analog output to demonstrate the accuracy of the measurement by comparing it to the input signal.

    This approach was able to display the digital equivalent by outputting each bit (similiar to a parallel interface). 

    The analog performance of the device should be modeled  accurately, even if the digital interface does not reflect the actual device 

    Regards

    Cynthia