DS1920
PRODUCTIONTemperature iButton
- Part Models
- 1
- 1ku List Price
- Starting From $6.64
Part Details
- Digital Thermometer Measures Temperatures from -55°C to +100°C in Typically 0.2s
- Zero Standby Power
- 0.5°C Resolution, Digital Temperature Reading is Two's Complement of °C Value
- Access to Internal Counters Allows Increased Resolution Through Interpolation
- Reduces control, Address, Data, and Power to a Single Data Contact
- 8-Bit Device-Generated CRC for Data Integrity
- 8-Bit Family Code Specifies DS1920 Communications Requirements to Reader
- Special Command Set Allows User to Skip ROM Section and Perform Temperature Measurements Simultaneously for All Devices on the Bus
- 2 Bytes of EEPROM to Be Used Either as Alarm Triggers or User Memory
- Alarm Search Directly Indicates Which Device Senses Alarming Temperatures
The iButton® temperature logger (DS1920) provides direct-to-digital 9-bit temperature readings over a range of -55°C to +100°C in 0.5° increments. The iButton communicates with a processor using the 1-Wire® protocol through a hardware port interface. The port interface provides both the physical link and handles the communication protocols that enable the processor to access iButton resources with simple commands. Two bytes of EEPROM can be used either to set alarm triggers or for storing user data.
Armored in the DS1920, the thermometer can measure temperatures in demanding environments. Like every other iButton device, the DS1920 has a unique serial number. The 1-Wire interface reduces data output, address, and power to one line. A unique serial number allows multiple 1920s to share the same bus, with many sensors placed at different sites reporting to a single port on a processor. Multidropped DS1920s make the lowest-power temperature sensing network available inside buildings, equipment, or machinery and in process monitoring and control. With appropriate accessories the DS1920 easily attaches to an object or circuit board.
Documentation
Data Sheet 1
Application Note 2
Design Note 1
Technical Articles 17
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| DS1920-F5+ | <u>i</u>Button F5 MicroCan |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 5, 2020 - 1923 ASSEMBLY |
||
| DS1920-F5+ | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
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