The recommended layout and routing for the DS1722S/T&R involves keeping the device away from heat sources, using a solid ground plane, and minimizing the length of the VCC and GND traces. Additionally, it's recommended to use a 4-layer PCB with a dedicated thermal plane to reduce thermal gradients.
The DS1722S/T&R does not require calibration for typical temperature measurement applications. However, for high-accuracy applications, calibration can be performed by comparing the device's output to a known temperature reference point. The calibration process involves adjusting the device's internal calibration registers to match the measured temperature.
The maximum cable length for the 1-Wire interface of the DS1722S/T&R is dependent on the cable type, capacitance, and noise environment. As a general guideline, Maxim recommends keeping the cable length below 100 meters. However, longer cable lengths can be achieved with proper cable selection, termination, and noise filtering.
Yes, the DS1722S/T&R can be used in a multi-drop 1-Wire bus configuration. Each device on the bus requires a unique address, and the master device must be able to handle the increased bus capacitance and noise. Maxim provides guidelines for designing multi-drop 1-Wire bus systems in their application notes.
The DS1722S/T&R has a built-in power-on reset (POR) circuit that resets the device during power-up. For brown-out detection, an external voltage supervisor or reset IC can be used to detect voltage drops and reset the device. The POR and brown-out detection circuits ensure that the device operates correctly and reliably during power-up and power-down sequences.
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