AS6200 digital temperature sensor from ams combines low power, high accuracy

ams AG, a provider of high-performance sensors and analog ICs, launched the AS6200, an integrated digital temperature sensor that combines low power consumption with high accuracy in a small package.

The 1.6-mm x 1-mm 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 AS6200 integrates into a single chip the functions required in a temperature sensing system, allowing users to design the sensor into space-constrained or battery-powered products. 

The device consists of a silicon bandgap sensor, an analog-to-digital converter, a digital signal processor, and a serial I2C interface. The on-chip DSP handles all linearization and calibration, producing a 12-bit (0.0625°C resolution) binary output. 

Despite its high level of integration, the AS6200 draws little current. Operating from a supply range of 1.8 to 3.6 V, the AS6200 draws 1.5 µA at a measurement rate of 1 sample. The conversion rate can be set in a range from 0.25 to 8 Hz. At lower conversion frequencies, power consumption is lower. In standby mode, in which all of the chip’s functions are turned off except for the serial interface, it draws just 0.1 µA (typical). 

The AS6200 allows manufacturers of battery-powered, mobile, and wearable devices to implement digital temperature sensing into new designs without paying a power or space penalty. The sensor’s I2C interface allows 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. 
 

The AS6200 is available immediately in production volumes. Unit pricing is €0.49 in order quantities of 1,000.

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