DS1825U+

DS1825U+ is a digital thermometer that provides 9 to 12-bit centigrade temperature measurements and has an alarm function with NV user-programmable upper and lower trigger points. The DS1825 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. Each DS1825 has a unique 64-bit serial code, which allows multiple DS1825s to function on the same 1-Wire bus, thus, it is simple to use one microprocessor to control many DS1825s distributed over a large area. In addition, the 4-bit location address can be used to identify specific temperature sensors in the system without requiring a wide lookup table. Applications that can benefit from this feature include HV AC environmental controls, temperature monitoring systems inside buildings, equipment or machinery, and process monitoring and control systems. Suitable for thermostatic controls, industrial systems, consumer products, thermometers applications.

• Unique 1-wire® 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 from 3 to 3.7V)
• Converts temperature to 12bit digital word in 750ms (max)
• User-Definable (NV) alarm settings
• Alarm search command identifies, addresses devices whose temperature is outside of programmed limits
• 8-pin SOP package, operating temperature range of -55 to +125°C (±0.5°C accuracy from -10 to +85°C )