Digital temperature sensor packaged for IoT, mobile, battery-powered apps

June 23, 2016 // By Graham Prophet
ams' claims for its AS6200 temperature sensor centre on a combination of accuracy, ultra-low power consumption and small size; the package measures 1.6 x 1mm.

The AS6200’s typical current is 6 µA at a measurement rate of 4 samples per second, and its digital measurement outputs are accurate to ±0.4°C. The factory calibrated device integrates in a single chip the functions required in a temperature sensing system for space-constrained or battery-powered products.


It comprises a silicon bandgap sensor, an analogue-to-digital converter, a digital signal processor and a serial I ²C interface. The on-chip DSP handles all linearization and calibration, producing a 12-bit (0.0625°C resolution) binary output. Operating from a supply range of 1.8V-3.6V, the AS6200 draws 1.5 µA at a measurement rate of 1 sample/sec. The conversion rate can be set in a range from 0.25 Hz to 8 Hz. In standby mode, in which all the chip’s functions are turned off except the serial interface, it draws 0.1 µA (typical).


The sensor’s I ²C interface allows for two devices to be connected to one bus. The sensor also has a pin dedicated to an Alert function, which triggers an interrupt at the host microcontroller when the measured temperature crosses a high or low temperature threshold set by the user.


ams intends the sensor to create opportunities for manufacturers of battery powered, mobile and wearable devices to implement digital temperature sensing into new designs without paying a power or space penalty. Industrial process control solutions, and Internet of Things applications such as cold chain monitoring are enhanced as space and power savings are realized.


The part costs €0.49 (1,000).