ADCMP572 Hysteresis Graph

Hi,

My customers are considering ADCMP 572.

So I got a request for the graph of ADCMP572 hysteresis range in Figure 20.

#1   It is a graph of resistance vs hysteresis range, but I want a graph showing the resistance value in logarithm.

       Do you have?

#2   When shorting the hysteresis pin to GND, the hysteresis was ± 23 mV.

       It is out of of ± 25 mV of the data sheet, but is the range of assumed error?

#3   What is the accuracy of this graph?
       (For example, ± 5% deviation by IC individual difference etc.)

Best Regards,

Yuya

  • 0
    •  Analog Employees 
    on Apr 19, 2018 4:51 PM over 2 years ago

    Hi Yuya,

    I contacted the product owner for your query. He'll respond to you soon.

    Regards,
    Goz

  • 0
    •  Analog Employees 
    on Apr 20, 2018 10:25 AM over 2 years ago

    Hi Yuya,

    We don't have a plot that show a logarithmic value of Rhys. We normally use linear plot to show hysteresis voltage vs required Rhys or current.

    Figure 20 was derived using the condition that Vcci = Vcco = 3.3v taken at 25'c. can you confirm the voltage that the customer is using in there system. Can you also please confirm the method they use in deriving the hysteresis for ADCMP572? Unfortunately I don't have the exact hysteresis accuracy of ADCM572, I could try it on bench by it would take some time.

    May I know who is the customer for this request and also the EAU in case it is available, I would also appreciate if you can share some schematic and condition how they plan to use the ADCMP572.

    Regards,

    Joven

  • Hi, Joven

    Thank you for your answer.

    I understood that there was no provision for a logarithmic plot.

    Measurement conditions, power supply voltage, I will check with the customer.

    Best Regards,

    Yuya