Other Parts Discussed in Thread: TIDA-01093
Hi Team,
Could you please help me with this case?
I saw there is a 3M resistor, R25, at TS2 pin in the SCH of TIDA-01093. what is the role?
Thanks and best regards.
HL Zhang
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Hi Team,
Could you please help me with this case?
I saw there is a 3M resistor, R25, at TS2 pin in the SCH of TIDA-01093. what is the role?
Thanks and best regards.
HL Zhang
Hey Hailiang,
The resistor is there in case the user decides not to populate the thermistor header. The TS pins need a pull down resistor to the group reference is there is no thermistor installed.
Thanks,
Caleb
Hi Caleb,
Thanks for you answer. I guess a 3M resistor affect little when a thermistor is populated. But I notice that a 10k pull down resistor is recommend on the datasheet. What to consider if using 3M resistors? Does the AFE show low temperature when the thermistor is not populated?
Regards,
Hailiang
Hey Hailiang,
Unfortunately I have not tested that aspect of this design. My assumption is that the designers used a high value resistor so that a wide range of temp coefficients could be used when testing this specific board. 10K is recommended for designs where this is supposed to be no thermistor.
Thanks,
Caleb