Waterproof Digital Probe Temperature Sensor DS18B20 Arduino

Quick Overview

General Description: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. In addition, the DS18B20 can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply. Each DS18B20 has a unique 64-bit serial code, which allows multiple DS18B20s to function on the same 1-Wire bus. Thus, it is simple to use one microprocessor to control many DS18B20s distributed over a large area. Applications that can benefit from this feature include HVAC environmental controls, temperature monitoring systems inside buildings, equipment, or machinery, and process monitoring and control systems.Applications●Thermostatic Controls●Industrial Systems●Consumer Products●Thermometers●Thermally Sensitive SystemsBenefits and Features●Unique 1-Wire® Interface Requires Only One Port Pin for Communication●Reduce Component Count with Integrated Temperature Sensor and EEPROM• Measures Temperatures from -55°C to +125°C (-67°F to +257°F)• ±0.5°C Accuracy from -10°C to +85°C• Programmable Resolution from 9 Bits to 12 Bits• No External Components Required●Parasitic Power Mode Requires Only 2 Pins for Operation (DQ and GND)●Simplifies Distributed Temperature-Sensing Applications with Multidrop Capability• Each Device Has a Unique 64-Bit Serial Code Stored in On-Board ROM●Flexible User-Definable Nonvolatile (NV) Alarm Settings with Alarm Search Command Identifies Devices with Temperatures Outside Programmed Limits●Available in 8-Pin SO (150 mils), 8-Pin μSOP, and 3-Pin TO-92 Packages19-7487; Rev 6; 7/19Ordering Information appears at end of data sheet.1-Wire is a registered trademark of Maxim Integrated Products, Inc.Pin ConfigurationsBOTTOM VIEW87652N.C.N.C.VDDDQN.C.N.C.N.C.GNDDS18B20S