DS1821+

DS1821+, thermometer, SOP-8, -0.5V to +6.0V, 4mA, 1000nA

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Price:: US $1.45~2.99 / piece [Get Latest Price]

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	US $1.45~2.99

PartNumber:: DS1821+

Brand:: Dallas Semiconductor - Maxim | Pack: TO | D/C: 11+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
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Products Upload time: 2012-10-09

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Part Number:DS1821+
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Product Summary

The DS1821+ is a thermometer. It provides 9- to 12-bit centigrade temperature measurements and has an alarm function with NV user-programmable upper and lower trigger points. The DS1821+ communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. It has an operating temperature range of –55℃ to +125℃ and is accurate to ±2.0℃ over the range of –10℃ to +85℃. In addition, the DS1821+ can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply.

Parametrics

DS1821+ absolute maximum ratings: (1)Voltage on Any Pin Relative to Ground: -0.5V to +6.0V; (2)Operating Temperature Range: -55℃ to +125℃; (3)Storage Temperature Range: -55℃ to +125℃; (4)Solder Dip Temperature: See IPC/JEDEC J-STD-020A Specification; (5)Reflow Oven Temperature: +220℃.

Features

DS1821+ features: (1)Unique 1-Wire?interface requires only one port pin for communication; (2)Each device has a unique 64-bit serial code stored in an on-board ROM; (3)Multidrop capability simplifies distributed temperature-sensing applications; (4)Requires no external components; (5)Can be powered from data line. Power supply range is 3.0V to 5.5V; (6)Measures temperatures from -55℃ to +125℃ (-67℃ to +257℃); (7)±2.0℃ accuracy from -10℃ to +85℃; (8)Thermometer resolution is user-selectable from 9 to 12 bits; (9) Converts temperature to 12-bit digital word in 750ms (max.); (10) User-definable nonvolatile (NV) alarm settings; (11) Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition); (12) Software compatible with the DS18B20; (13) Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system.