TMP116 Temperature Sensors

By Texas Instruments 34

TMP116 Temperature Sensors

Texas Instruments' TMP116 and TMP116N comprise a family of low-power, high-precision temperature sensors with integrated EEPROM memory. The TMP116 provides a 16-bit temperature result with a resolution of 0.0078°C and an accuracy of up to ±0.2°C with no calibration. The TMP116 is I2C- and SMBus™ interface compatible, has programmable alert functionality, and can support up to four devices on a single bus.

The TMP116 consumes minimal current that, in addition to providing power savings, minimizes self-heating and improves measurement accuracy. The TMP116 operates from 1.9 V to 5.5 V and typically consumes 3.5 µA.

Across the device operating temperature range of -55°C to +125°C, the TMP116 exceeds the accuracy of a class A RTD while consuming less than one-fifth of the typical excitation current for a PT100 RTD. The TMP116 is easier to use than RTDs, eliminating the need for calibration, external circuitry, matched traces, and Kelvin connections.

The TMP116 units are 100% tested on a production setup that is NIST traceable and verified with equipment that is calibrated to ISO/IEC 17025 accredited standards.

Features
  • TMP116 accuracy without calibration:
    • ±0.2°C (max.) from -10°C to +85°C
    • ±0.25°C (max.) from -40°C to +105°C
    • ±0.3°C (max.) from +105°C to +125°C
  • TMP116N accuracy without calibration:
    • ±0.3°C (max.) from -25°C to +85°C
    • ±0.4°C (max.) from -40°C to +125°C
  • Supply range: 1.9 V to 5.5 V
  • Low quiescent current:
    • 3.5 µA, 1 Hz conversion cycle
    • 250 nA shutdown current
  • Resolution: 16-bits at 0.0078°C (1 LSB)
  • Programmable temperature alert limits
  • General-purpose EEPROM: 64-bits
  • NIST traceability
  • SMBus, I2C interface compatibility
Applications
  • Environmental monitoring and thermostats
  • Wearables
  • Asset tracking and cold chains
  • Gas meters and heat meters
  • Test and measurement
  • RTDs replacement: PT100, PT500, PT1000
  • Cold-junction compensation of thermocouples

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