The maximum cable length for the TMP75AIDR is not explicitly stated in the datasheet, but it is recommended to keep the cable length as short as possible to minimize noise and signal degradation. A general rule of thumb is to keep the cable length under 10 meters.
The TMP75AIDR has a power-on reset (POR) circuit that resets the device when the power supply voltage (VCC) rises above 1.5V. To handle the POR, ensure that the VCC supply is stable and within the recommended operating range before attempting to communicate with the device.
For optimal performance, it is recommended to follow good PCB layout and routing practices, such as keeping the analog and digital traces separate, using a solid ground plane, and minimizing noise coupling. Additionally, place the TMP75AIDR close to the thermal source being measured and use a thermal pad or heat sink to improve thermal conductivity.
The TMP75AIDR does not require calibration, as it is a digital temperature sensor with an internal calibration. However, if you need to perform a system-level calibration, you can use the device's built-in temperature sensor and a known temperature reference point to calibrate your system.
The TMP75AIDR's response time to temperature changes is dependent on the thermal time constant of the device, which is typically around 10-15 seconds. This means that the device can take up to 10-15 seconds to settle to a new temperature reading after a temperature change.
TMP75AIDR datasheet
by Texas Instruments
