I want to use TPL5010 IC in one our company product, which will be subjected to -20 to +80 degC temperature.
The device mentions IC having max Oscillator Accuracy over temperature of +-400 ppm/degC wrt room temperature 25degC.
Lets say one of the IC in lot has Oscillator Accuracy over temperature of +-400 ppm/degC
400ppm = 400/1000000 = 0.0004
For 85 deg C = 0.0004 * (85-25) = 0.024
Lets say another IC in lot has Oscillator Accuracy over temperature of +-100 ppm/degC
100ppm = 100/1000000 = 0.0001
For 85 deg C = 0.0001 * (85-25) = 0.006
as Oscillator frequency haven’t been mentioned in datasheet. So for 1 sec timing generator , one IC having Oscillator Accuracy over temperature of +400 ppm/degC
Will now generate 1.024 sec timing pulse?
and IC having Oscillator Accuracy over temperature of +100 ppm/degC
Will now generate 1.001 sec timing pulse?
Please confirm my understanding.
They do have mentioned the internal oscillator has an accuracy of +/-0.5% over temperature,
but does it mean , if timer is generating 1 sec time interval , then 0.5% contributes to 1.005 and 0.995.
Please confirm my understanding.
what would be TPL5010 IC oscillator frequency.
i am not sure which parameter to look for the IC to IC variation over the temperature.