The DS1822+PAR is an Econo 1 wire digital thermometer in 3 pin TO-92 package. It is a digital thermometer which provides 9 to 12bit centigrade temperature measurements and has an alarm function with NV user programmable upper and lower trigger points. The DS1822 communicates over a 1 wire bus which 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 ±2°C over the range of-10°C to 85°C. In addition, the DS1822 can derive power directly from the data line (parasite power) eliminating the need for an external power supply. Each DS1822 has a unique 64 bit serial code which allows multiple DS1822s to function on the 1 wire bus thus it is simple to use one microprocessor to control many DS1822s distributed over a large area. Applications that can benefit from this feature include HVAC environmental controls, temperature monitoring systems, process monitoring & control systems
Supply voltage range is 3V to 5.5V
Converts temperature to 12bit digital word in 750ms
Flexible user definable NV alarm settings with alarm search command
Software compatible with the DS18B20
Simplifies distributed temperature sensing with multidrop capability
Reduced component count with integrated temperature sensor and interface
