DS18B20Z+T&R - Analog Devices

DS18B20Z+T&R Frequently Asked Questions (FAQs)

• What is the accuracy of the DS18B20Z+T&R over the entire operating temperature range?
  The DS18B20Z+T&R has an accuracy of ±0.5°C from -10°C to +85°C, and ±1°C from -40°C to +125°C.
• How do I connect multiple DS18B20Z+T&R sensors to a single bus?
  You can connect multiple DS18B20Z+T&R sensors to a single bus by connecting the VDD, GND, and DQ pins of each sensor in parallel. Each sensor has a unique 64-bit serial code, allowing the master device to address and read data from each sensor individually.
• What is the maximum cable length for the DS18B20Z+T&R?
  The maximum cable length for the DS18B20Z+T&R depends on the cable capacitance and the bus speed. As a general rule, the cable length should be limited to 100 meters or less to ensure reliable operation.
• Can I use the DS18B20Z+T&R in a parasitic power mode?
  Yes, the DS18B20Z+T&R can be used in a parasitic power mode, where the sensor derives its power from the data line. This mode is useful for applications where a separate power supply is not available.
• How do I handle errors and faults in the DS18B20Z+T&R?
  The DS18B20Z+T&R has built-in error detection and correction mechanisms. The sensor returns an error code if it detects a fault or error during a conversion. The master device can retry the conversion or take other corrective action based on the error code.