DS1825U+T&R

DS1825U+T&R is a programmable resolution 1-wire digital thermometer with a 4-bit ID. It is a digital thermometer that provides 9 to 12bit 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. In addition, the DS1825 can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply. It is used in applications such as thermostatic controls, industrial systems, consumer products, thermometers, and thermally sensitive systems.

• 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
• Power supply voltage range from 3.0V to 3.7V, requires no external components
• Thermometer resolution is user-selectable from 9 to 12 bits
• User-definable (NV) alarm settings, thermometer error is ±0.5°C typical
• Standby current is 1000nA typical at (-55°C to +125°C; VDD= 3.0V to 3.7V)
• Operating temperature range from -55°C to +125°C
• 8-pin µSOP package

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