FST Series DS18B20 Programmable Resolution 1-Wire Digital Temperature Sensor The DS18B20 digital thermometer provides 9-bit to 12-bit Celsius temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18B20 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. It has an operating temperature range of -55°C to +125°C and is accurate to ±0.5°C over the range of -10°C to +85°C. Typical Applications Heater systems Measuring instruments Washing machines Over-heating protection Features • Measures temperatures from -55°C to +100°C (-67°F to +212°F) • Thermometer resolution is user-selectable from 9 to 12 bits Parameter Temperature ±0.5°C accuracy from -10°C to +85°C Accuracy - ±2°C accuracy from -55°C to +125°C Work Current 1.5mA Output Pin Sink Current 4mA (@ VI/O=0.4V) Response Converts temperature to 12-bit digital word in 750 ms (max.) Output Open-drain 1-Wire interface pin. Drift ±0.2°C on a 1000h stress test at +125°C with VDD= 5.5V 1. House material, size and configuration adjustable according to mounting requirement. 2. Cable insulation, gauge and length adaptable with requirement. 3. Other accessories available on request. 4. If only monitor the environment temperature, may be used MAX31820, but power supply from 3.0V to 3.7V, and ±0.5°C Accuracy from +10°C to +45°C 5. 1-wire communication protocol see MAXIM “DS18B20” datasheet Dimensions (mm) FST V1.0/Modification rights reserved www.focusens

FST Series DS18B20 Programmable Resolution 1-Wire Digital Temperature Sensor Ordering Guide SERIES SENSOR OUTPUT T-SCALING HOUSES'1’ Note: (1) Please contact with sales department FST V1.0/Modification rights reserved www.focusens.com