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Key Features
Applications/Uses
Parametric specs for Temperature Sensors
| Sensor Type | Local |
| # Channels | One |
| Interface | 3-Wire/SPI |
| Accuracy (±°C) | 2 |
| Parasite Pwr. | No |
| Temp. Resolution (bits) | 8 9 10 11 12 |
| Oper. Temp. (°C) | -55 to +125 |
| Package/Pins | SOIC (N)/8 UMAX/8 |
| Budgetary Price (See Notes) | 1.25 |
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Simplified Block Diagram
Technical Docs
| Data Sheet | Digital Thermometer with SPI/3-Wire Interface | Feb 21, 2008 | |
| App Note | Package Thermal Resistance Values (Theta JA, Theta JC) for Temperature Sensors and 1-Wire Devices | ||
| Tutorial | Thermal Management Handbook |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
Parametric specs for Temperature Sensors
| Sensor Type | Local |
| # Channels | One |
| Interface | 3-Wire/SPI |
| Accuracy (±°C) | 2 |
| Parasite Pwr. | No |
| Temp. Resolution (bits) | 8 9 10 11 12 |
| Oper. Temp. (°C) | -55 to +125 |
| Package/Pins | SOIC (N)/8 UMAX/8 |
| Budgetary Price (See Notes) | 1.25 |
Key Features
- Temperature Measurements Require No External Components
- Measures Temperatures from -55°C to +120°C. Fahrenheit Equivalent is -67°F to +248°F
- Thermometer Accuracy is ±2.0°C
- Thermometer Resolution is Configurable from 8 to 12 bits (1.0°C to 0.0625°C Resolution)
- Data is Read From/Written to Via a Motorola Serial Peripheral Interface (SPI) or Standard 3-Wire Serial Interface
- Wide Analog Power Supply Range (2.65V - 5.5V)
- Separate Digital Supply Allows for 1.8V Logic
- Available in an 8-Pin SO (150mil) and 8-Pin µMAX package
Applications/Uses
- Cell Phone Base Stations
- Computer Peripherals
- Networking
- Telecommunications
- Test Systems
Description
The DS1722 Digital Thermometer and Thermostat with SPI/3-Wire Interface provides temperature readings which indicate the temperature of the device. No additional components are required; the device is truly a temperature-to-digital converter. Temperature readings are communicated from the DS1722 over a Motorola SPI interface or a standard 3-wire serial interface. The choice of interface standard is selectable by the user.
For applications that require greater temperature resolution, the user can adjust the readout resolution from 8 to 12 bits. This is particularly useful in applications where thermal runaway conditions must be detected quickly. For application flexibility, the DS1722 features a wide analog supply rail of 2.65V - 5.5V. A separate digital supply allows a range of 1.8V to 5.5V.
The DS1722 is available in an 8-pin SO (150mil) and 8-pin µMAX package.
Applications for the DS1722 include personal computers/servers/workstations, cellular telephones, office equipment, or any thermally-sensitive system.
For applications that require greater temperature resolution, the user can adjust the readout resolution from 8 to 12 bits. This is particularly useful in applications where thermal runaway conditions must be detected quickly. For application flexibility, the DS1722 features a wide analog supply rail of 2.65V - 5.5V. A separate digital supply allows a range of 1.8V to 5.5V.
The DS1722 is available in an 8-pin SO (150mil) and 8-pin µMAX package.
Applications for the DS1722 include personal computers/servers/workstations, cellular telephones, office equipment, or any thermally-sensitive system.
Technical Docs
| Data Sheet | Digital Thermometer with SPI/3-Wire Interface | Feb 21, 2008 | |
| App Note | Package Thermal Resistance Values (Theta JA, Theta JC) for Temperature Sensors and 1-Wire Devices | ||
| Tutorial | Thermal Management Handbook |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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