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RTOS/TMS570LS0432: About ADC sample time

user5112180
Prodigy 210 points
Part Number: TMS570LS0432

Tool/software: TI-RTOS

Hi,

I am using TMS570LS0432 to do 16CH ADC sampling, it takes roughly 11us to complete mission when using GUI

tools generated function. It is too long time or just normal?

  • 0
    TI__Guru**** 197356 points
    Hello,

    For 12-bit mode, the minimum sample//hold and conversion time is 0.6us, and the minimum ADC clock cycle time is 33ns.
    The ADC timing for each channel is: T(channel) = T(discharge) + T(sample) + T(conversion)
    and the total ADC timing is: T(total) = Channel_Number * T(channel) + (Channel_Number - 1)*5*T(vclk)

    What are the values used in your ADC configuration?
    1. ADCLK PRESCALE (PS)
    2. DISCHARGE CYCLES PRESCALE (PDIS)
    3. ACQUISITION PRESCALE (ACQ)
    4. RESOLUTION (10-bit or 12-bit)
  • 0 in reply to QJ Wang
    TI__Guru**** 197356 points
    Hello,

    Can I have you configuration value listed in my last post? Those values are related to the ADC sampling time. Thanks