MAX31826
PRODUCTION1-Wire Digital Temperature Sensor with 1Kb Lockable EEPROM
Digital Temperature Sensor with 1Kb of EEPROM Saves Space and Eases Design of Multisensor Systems
- Part Models
- 4
- 1ku List Price
- Starting From $2.26
Overview
- Unique 1-Wire Interface Requires Only One Port Pin for Communication
- Integrated Temperature Sensor and EEPROM Reduce Component Count
- Measures Temperatures from -55°C to +125°C (-67°F to +257°F)
- ±0.5°C Accuracy from -10°C to +85°C
- 12-Bit Temperature Resolution (0.0625°C)
- 1Kb EEPROM Can Be Locked to Prevent Further Writes
- Multidrop Capability Simplifies Multisensor Systems
- Each Device Has a Unique 64-Bit Serial Code Stored in On-Board ROM
- Four Pin-Programmable Bits to Uniquely Identify Up to 16 Sensor Locations on a Bus
- Can Be Powered from Data Line (3.0V to 3.7V Power-Supply Range)
- 8-Pin µMAX® and TDFN Packages
The MAX31826 digital thermometer provides 12-bit temperature measurements and communicates over a 1-Wire® bus that by definition requires only one data line (and ground) for communication with a central microcontroller. It has a -55°C to +125°C operating temperature range and is accurate to ±0.5°C over the -10°C to +85°C range. In addition, the device can derive power directly from the data line ("parasite power"), eliminating the need for an external power supply.
Each device has a unique 64-bit serial code, which allows multiple devices to function on the same 1-Wire bus. Therefore, it is simple to use one microcontroller (the master device) to control many devices distributed over a large area. The device includes 128 bytes (1Kb) of EEPROM for storage of system data. The EEPROM can be locked to permanently prevent any further data writes. Four location address inputs simplify mapping of individual devices to specific locations.
Applications
- Building Automation
- Consumer Equipment
- Industrial Systems
- Module Identification
- System Calibration
Documentation
Data Sheet 1
Reliability Data 1
Application Note 1
Design Note 1
Technical Articles 10
Analog Dialogue 1
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 |
|---|---|---|---|
| MAX31826MTA+ | Thin Dual Flatpack No Leads, Exposed Pad | ||
| MAX31826MTA+T | Thin Dual Flatpack No Leads, Exposed Pad | ||
| MAX31826MUA+ | Micro-MAX, Thin Shrink Small-Outline | ||
| MAX31826MUA+T | Micro-MAX, Thin Shrink Small-Outline |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Evaluation Kits
Evaluation Kit for the MAX31826
Evaluation Kit for the MAX31826
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