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PSoC™ 4 Forum Discussions

Anonymous
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Hi, I am using the IDAC of a PSOC 4. What is the temperature drift of the current? Is it the same tolerance as the reference voltage?

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Vasanth
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250 sign-ins 500 solutions authored First question asked

Hello Robin,

The drift value spec of the component is  10% (conditions -45 to 130C and 1.7V to 5.5V and across all corners). This is the worst case value and the actual device performance might be much better.

Best Regards,
VSRS

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Vasanth
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250 sign-ins 500 solutions authored First question asked

Hi,

Temperature drift of the IDAC is not normally spec present in the datasheet. Could you please let us know what you are trying to do?

Best Regards,
VSRS

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Anonymous
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Simplified, I am using the IDAC in combination with a resistor and an Opamp (Buffer) to generate a voltage over another variable resistor. Simultanouesly, I am measuring the current through the variable resistor to calculate the power dissipation.

I want to keep the electrical power constant for futher regulation processes. To calculate the tolerances of this regulation, I need to know all drift parameters.

Best regards,

Robin

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Vasanth
Moderator
Moderator
Moderator
250 sign-ins 500 solutions authored First question asked

Hello Robin,

The drift value spec of the component is  10% (conditions -45 to 130C and 1.7V to 5.5V and across all corners). This is the worst case value and the actual device performance might be much better.

Best Regards,
VSRS

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