DS18B20-PAR+T&R
Overview
The DS18B20-PAR is a digital thermometer that provides 9-bit to 12-bit Celsius temperature measurements and communicates over a 1-Wire bus. This specific variant is designed for parasite-power mode, allowing it to derive power directly from the data line and eliminating the need for an external power supply. It operates over a range of -55C to +100C and is housed in a compact 3-pin TO-92 package.
Why Choose This Part
The primary advantage is the parasite-power capability which requires only two wires (DQ and GND) for operation, significantly simplifying cable runs. It features +/-0.5C accuracy and user-definable non-volatile alarm settings, making it highly reliable for remote monitoring without local power sources.
Applications
Getting Started
To interface with this sensor, use a microcontroller with a 1-Wire master library and a 4.7k ohm pull-up resistor on the data line. Ensure the timing requirements of the 1-Wire protocol are met for successful temperature conversions, which can take up to 750ms at 12-bit resolution.
