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TMP112 Brownout

Trish Towey
Prodigy 30 points
Other Parts Discussed in Thread: TMP112

Hello,

Please advise:

a) What is the ‘brownout’ voltage at -40C, 25C and 125C for the TMP112 to reset ? (i.e. at which low voltage below 1.4V value is the reset triggered)

b) What is the minimum duration of this low voltage condition for the reset to be activated

Thanks,

Trish 

  • 0
    TI__Mastermind 27715 points

    Hello Trish,

    I'll check with the designers for this data. 

    Best regards,

    Ian Williams
    Linear Applications Engineer
    Precision Linear and Sensing Products 

  • 0 in reply to Ian Williams
    TI__Mastermind 27715 points

    Hello again Trish,

    The average power-on reset values for the TMP112, including tolerances caused by part-to-part variation, are as follows:

    • -40°C = 0.97V ± 0.07V
    • 25°C =  0.87V ± 0.04V
    • 125°C = 0.77V ± 0.06V 

    Specifying the minimum low-voltage glitch duration for a power-on reset to occur is less straightforward. Whether or not the part will reset during the supply glitch depends on many factors such as temperature, duration of the glitch, frequency and duty cycle of the glitch, nominal supply level, slew rate of the glitches, and low level of the glitches, so trying to make any generalizations in this area is dangerous. The important thing to keep in mind is that the device will come out of these glitches either in the reset state or in the state prior to the supply glitch - there will be no lock-ups or strange configuration states.

    Best regards,

    Ian Williams