TMP107 Digital Temperature Sensors

By Texas Instruments 86

TMP107 Digital Temperature Sensors

Texas Instruments' TMP107 digital output temperature sensors support a total of 32 daisy-chained devices. Each sensor has a unique 5-bit address stored in electrically erasable programmable memory (EEPROM). The TMP107 are capable of reading temperatures with a resolution of 0.015625°C and are accurate to within ±0.4°C in the range from -20°C to 70°C. The TMP107 are ideal for replacing NTC and PTC thermistors where high accuracy is required.

The unique 5-bit address stored in the EEPROM is determined during the automated address assignment operation, and is based on the position of each sensor relative to the SMAART Wire™ host. Multiple operating modes provide maximum flexibility in selecting between low power consumption for battery operation and high update rates for real-time control applications.

The TMP107 are ideal for extended temperature measurement in a variety of industrial, instrumentation, communication, and environmental applications. The TMP107 are available in an 8-pin SOIC package and are specified for operation over a temperature range of -55°C to 125°C.

Features
  • High accuracy:
    • ±0.4°C (max) from -20°C to 70°C
    • ±0.55°C (max) from -40°C to 100°C
    • ±0.7°C (max) from -55°C to 125°C
  • High resolution: 14 bits (0.015625°C)
  • UART-compatible, SMAART Wire interface:
    • Allows up to 32 daisy-chained devices
  • EEPROM memory for unique addressing, trip level programming, and general-purpose storage
  • Continuous conversion and shutdown mode for power savings
Applications
  • Cold-chain logistics
  • Distributed temperature sensing
  • Power-supply and battery thermal protection
  • Servers and telecommunication systems
  • Building automation and HVAC
  • Agricultural equipment
  • Medical devices
  • Industrial process control

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