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RTOS/TLE2022A: Ksvr value characterization

na na78
Guru 16770 points
Part Number: TLE2022A
Other Parts Discussed in Thread: TLE2022

Tool/software: TI-RTOS

Hi

We are considering TL2022A and we had a question.

There is a parameter of KSVR(Supply-voltage rejection ratio)  which offers MIN 98dB in full range.

Is this min 98dB spec always applicable even if supply ripple frequency is swept?

BestRegards

  • 0
    TI__Guru 68541 points

    The minimum power supply rejection ratio, KSVR, of 98dB applies only to dc or low frequency signals and it decreases with the increase in frequency.

  • 0 in reply to Marek Lis
    Guru 16770 points
    Hi Marek

    Thank you for reply.

    Do you have characterized information about the KSVR vs frequency?


    BestRegards
  • 0 in reply to na na78
    TI__Guru 68541 points

    Unfortunately, TLE2022 is a legacy product introduced back in 1997 that we inherited from Dallas team.  For that reason, we do not have any characterization data here beyond what is shown in the datasheet.  Since there is no PSRR (KSVR) vs Frequency graph included in the datasheet, the next best thing is to look at the CMRR vs Frequency graph to get a sense what you may expect in terms of location of the roll-off slope - see below.