ams AS621x Temperature Sensors



The AS621x family is a complete digital sensor system, designed for the needs of various markets. It features 8 I²C addresses to serve complex design needs. This is especially useful in the prototyping phase of a product where several heat sensitive areas might need monitoring but without needing to reserve additional systems application processor resources. It is a fully calibrated and linearized sensor system that is easy to integrate in any digital system. The family has 3 members (AS6212, AS6214 & AS6218) with different temperature accuracies to give customers the best option for their needs. The highest performing AS6212 has an accuracy of +/- 0.2°C from -10°C to 65 °C. It provides a resolution of 16 bit over the wide temperature range from -40°C to 125°C. The integrated alarm functionality enables micro-controller wake-up calls on defined temperature thresholds. An internal voltage regulator allows stable accuracy independent of the supply voltage between 1.71V to 3.6V. For powersensitive applications, the device can enter a low-power wait mode with 0.1μA current consumption.

The AS6212, AS6214 and AS6218 production test setup is calibrated according NIST and the verification equipment is calibrated by an ISO/IEC-17025 accredited laboratory.



  • Ultra low power consumption
  • High temperature accuracy
  • Small integration size (WLCSP)
  • Complete sensor system with serial bus connection
  • Alert functionality for exact temperature control


  • Long battery life and low self heating
  • “Easy to Use” solution, i.e. no calibration or linearization needed
  • Minimal board space and fast reaction time
  • 3 different versions (AS6212, AS6214 & AS6218) to optimally meet the accuracy requirements
  • 3 different versions (AS6212, AS6214 & AS6218) with different temperature accuracies in order to perfectly match customer requirements.

Ordering codes

Product Type Description Order No. Availability


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AS621x DS000677


Application note

Technical documents

Environmental documents