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DS1822
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Category:sensor
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Product Name:Digital thermometer with ±2°C accuracy over the -10°C to +85°C temperature range
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Manufacturers:MAXIM
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Production Batch Number:11+
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Encapsulation:SOP8
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Stock Status:There is stock
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Stock Quantity:8000
- Minimum order quantity: 1
- Details:
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DS1822Over -10°C to +85°C with ±2°C accuracyDigital temperatureplan
description
The DS1822 is a digital thermometer with ±2°C accuracy over the -10°C to +85°C temperature range. Data in 1-Wire® serial bus format over 2 complement formats with a resolution of 9 to 12 bits (user programmable) is read. The temperature of the DS1822（TH) and temperature（TL) User-programmable setpoints stored in the on-chip EEPROM provide thermostat. An internal flag is set when the measured temperature isTH is greater than or less thanTL。 If constant temperature operation is not required, the two bytes in EEPROM are reserved as THandTL, which can be used for general-purpose non-volatile storage. Each DS1822 features a unique and immutable 64-bit chip serial number that serves as the sensor's bus address. This allows multiple DS1822 devices to coexist on the same 1-Wire bus. The DS1822 can be powered locally from a 3.0V to 5.5V supply, and power can be derived from the 1-Wire data line ("parasitic supply"). Software packages are available for the DS1822's 3-pin TO-92 (DS1822) and 150mil's 8-pin SO (DS1822Z). In addition, a parasite power version of the DS1822 is availableDS1822, Performance Appraisal。 High accuracy is also availableDS18B20It provides ±0.5°C accuracy and software compatibility with the DS1822.
Key features
- ±2°C accuracy from -10°C to +85°C
- Measurement temperature from -55°C to +125°C (-67°F to +257°F - )
- 9 - 12 user-configurable resolutions
- 1-Wire interface, only one communication port pin is required
- There is a 64-bit unique and immutable electronic serial number
- Multi-drop capability simplifies distributed temperature sensing
- User-defined non-volatile alarm setting alarm function
- Converts temperature to 12 bits at 750ms digital word (max)
- The required temperature measurement requires no external components
- 3.0V to 5.5V supply voltage range
- Optional "parasitic power" operation (power from 1-Wire bus directly)
- 3-pin TO-92 (DS1822) and 150mil 8-pin SO (DS1822Z) package
Application/Purpose
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Fire alarm system
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Hard drive
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Storage Area Network (SAN)
- telecommunications
andDS1822Related ICs are:
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