MAX31826MUA+

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.

Key Features

• 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

Application

• Building Automation
• Consumer Equipment
• Industrial Systems
• Module Identification
• System Calibration