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ADCMP354 truth table

tmineno
  •  Analog Employees 
on Sep 18, 2014

Hello All,

This is a elementary question but confusing one.

According to Figure 21(I attached below) in the ADCMP354 datasheet(Rev B), I think at fist comparator connect to n-FET and its drain connect to the output-pin, then if the output of comparator is low, the output of ADCMP354 is high.

However ADCMP354 is active high and non-inverting comparator and if the input is lower than 0.6, the output should be low.

I think Figure 21 is not exactly but I'd like to confirm the truth table of ADCMP354 and ADCMP350.

device input output
ADCMP350 >0.6 low
<0.6 high
ADCMP354 >0.6 high
<0.6 low

Is it correct?

Regards,

Taiki

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  • 0
    •  Analog Employees 
    on Sep 19, 2014 12:31 PM

    Hi Taiki,

    Thanks for pointing this out. I think there is an error on the diagram. You have the correct truth table which is the output goes to high impedance if the input is above 0.6 V and will have 0 V output if the input is below 0.6 V. I will notify the product owner of this part to make a necessary action regarding this.

    Thanks and best regards,

    Emman

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  • 0
    •  Analog Employees 
    on Sep 19, 2014 12:31 PM

    Hi Taiki,

    Thanks for pointing this out. I think there is an error on the diagram. You have the correct truth table which is the output goes to high impedance if the input is above 0.6 V and will have 0 V output if the input is below 0.6 V. I will notify the product owner of this part to make a necessary action regarding this.

    Thanks and best regards,

    Emman

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