A good PCB layout for the TMP411AD involves placing the device near the thermal source, using a solid copper pour on the PCB to dissipate heat, and minimizing thermal barriers such as vias and soldermask.
Calibration involves comparing the TMP411AD's output to a known temperature reference, and adjusting the offset and gain to achieve an accuracy of ±0.5°C or better. This can be done using a thermocouple or other high-accuracy temperature sensor as a reference.
The maximum cable length for the TMP411AD's digital output depends on the specific application and noise environment, but a general guideline is to keep the cable length under 10 meters to minimize signal degradation and noise susceptibility.
To minimize EMI, use a shielded cable for the digital output, keep the TMP411AD away from high-current or high-frequency sources, and use a low-pass filter or ferrite bead to filter out high-frequency noise.
The POR timing for the TMP411AD is approximately 10 ms, during which the device resets its internal registers and initializes its output. This timing can be critical in systems where the TMP411AD is powered on and off frequently.
TMP411AD datasheet
by Texas Instruments
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