DS1825

www.DataSheet4U.com DS1825 Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID www.maxim-ic.com FEATURES § § § § § § § § § § § § § § Unique 1-WireÒ Interface Requires Only One Port Pin for Communication Each Device has a Unique 64-Bit Serial Code Stored in an On-Board ROM Multidrop Capability Simplifies Distributed Temperature-Sensing Applications 4 Pin-Programmable Bits to Uniquely Identify Up to 16 Sensor Locations on a Bus Requires No External Components Can be Powered from Data Line. Power Supply Range: 3.0V to 3.7V Measures Temperatures from -55°C to +125°C (-67°F to +257°F) ±0.5°C Accuracy from -10°C to +85°C Thermometer Resolution is User-Selectable from 9 to 12 Bits Converts Temperature to 12-Bit Digital Word in 750ms (max) User-Definable (NV) Alarm Settings Alarm Search Command Identifies and Addresses Devices Whose Temperature is Outside of Programmed Limits (Temperature Alarm Condition) Available in 8-Pin mSOP Package Software Compatible with the DS1822 PIN ASSIGNMENT VDD DQ N.C. GND 1 8 AD3 AD2 AD1 AD0 2 7 DS1825 3 6 8-pin mSOP (DS1825U) 5 4 µSOP (DS1825U) PIN DESCRIPTION GND DQ N.C. VDD AD0 to AD3 - Ground - Data In/Out - No Connect - Power Supply Voltage - Address Pins APPLICATIONS 1-Wire is a registered trademark of Dallas Semiconductor. Thermostatic Controls Industrial Systems Consumer Products Thermometers Thermally-Sensitive Systems DESCRIPTION The DS1825 digital thermometer provides 9 to 12-bit centigrade temperature measurements...