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ISOM8110: CTR variation with respect to temperature

Rahamadullah A
Prodigy 160 points
Part Number: ISOM8110

CTR variation with respect to temperature is found is datasheet, Can you share us the graph if it is available.

  • 0
    TI__Genius 17885 points

    Hello,

    Thank you for your question.

    Unfortunately, we do not have CTR across temperature data available to share. However, there are CTR ranges on the datasheet (shown below). The minimum and maximum values in the datasheet are taken as worst-case values and are characterized across process. Temperature and voltage changes are provided in the typical applications curves. 

    Regards,
    Aaditya Vittal

  • 0 in reply to Aaditya V.
    Prodigy 160 points

    Thanks Aaditya Vittal for the response. So we can consider the provided CTR in the datasheet as the worst case CTR variation throughout the temperature range(-40 to 125degC)? 

  • +1 in reply to Rahamadullah A
    TI__Mastermind 29665 points

    Hello Rahamadullah,

    As Aaditya said previously, you consider the provided CTR range to be the worst-case variations over process (part to part variation). The variation is not over temperature since the table test condition is at 25C.

    You can see from Figure 7-9. Collector Current vs Ambient Temperature graph in the datasheet that there is little variation caused by temperature and forward current for given unit. 

    CTR can be calculated from this graph using one of the listed forward currents and CTR=Ic/If.

    I hope this helps. 

    Best,
    Andrew

    Best,
    Andrew

  • 0 in reply to Andrew J
    Prodigy 160 points

    Thanks Andrew. This helps a lot.