ams OSRAM AS621x Digital Temperature Sensors

ams OSRAM AS621x Digital Temperature Sensors are the second generation of the digital temperature sensor family. These devices are designed for high accuracy applications with ultra-low power consumption. The design offers eight I2C addresses and a supply voltage from 1.71V to 3.6V. The AS621x family is a fully calibrated and linearized sensor system that is easy to integrate into any digital system. The device provides a 16-bit resolution over the full temperature range from -40°C to +125°C. The integrated alarm functionality enables micro-controller wake-up calls at defined temperature thresholds. An internal voltage regulator enables stable accuracy independent of the supply voltage. For power-sensitive applications, the device can enter a low-power wait mode with 0.1μA current consumption.


  • A full-digital system with up to 8x I2C addresses
  • Ultra-low 6μA power consumption at 4 samples/sec (typical)
  • Small WLCSP package (1.5mm x 1.0mm)
  • High-temperature accuracy
    • AS6212: ±0.2°C (-10°C to +65°C)
    • AS6214: ±0.4°C (0°C to +65°C)
    • AS6218: ±0.8°C (0°C to +65°C)
  • 16-bit resolution
  • 1.71V to 3.6V supply voltage range
  • -40°C to +125°C operating temperature
  • Programmable alert output pin
  • Factory calibrated
  • Easy to integrate with a serial bus connection
  • Longer battery lifetime
  • Small integration size
  • Full accuracy oversupply voltage
  • Wide-range operating temperature
  • Alert functionality for exact temperature control
  • An easy-to-use solution, with no calibration or linearization needed


  • High-accuracy consumer electronics
  • Mobile devices/tablets/notebooks
  • Wearables/mobile health
  • Cameras
  • HVAC and thermostat control
  • Cold chain monitoring
  • Industrial automation
  • Lab equipment
  • Solid State Drives (SSDs)


Block Diagram

Block Diagram - ams OSRAM AS621x Digital Temperature Sensors
Published: 2019-11-19 | Updated: 2023-07-12