Austrian company ams AG introduced an integrated digital temperature sensor offering a combination of low power consumption and high accuracy in a small physical package size. The 1.6mm x 1mm AS6200 typically draws 6 µA at a measurement rate of 4 samples per second. Its digital measurement outputs are accurate to ±0.4° C over the 0° C to 65° C temperature range.
The factory-calibrated AS6200 integrates a complete temperature-sensing system in a single chip, making it easy for users to design the sensor into their space-constrained or battery-powered products. The device consists of a silicon band-gap sensor, an analog-to-digital converter (ADC), a digital signal processor (DSP) and a serial I2C interface. The on-chip DSP handles all linearization and calibration, producing a 12-bit binary output offering 0.0625° C resolution.
The sensor's conversion rate can be set as low as once every four seconds to as high as eight samples per second. Operating from a supply range of 1.8 V to 3.6 V, the AS6200 draws just 1.5 µA at a measurement rate of 1 sample per second.
The chip’s I2C 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 user-set high or low temperature threshold.
ams positions the tiny, ultra-low power AS6200 as creating new 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. The space and power savings can benefit industrial process control solutions and Internet of Things applications such as cold-chain monitoring.
The AS6200 is available immediately in production volumes. Unit pricing is €0.49 in order quantities of 1,000.
An evaluation board is available online from the ams ICdirect online store. For more technical information, for sample requests, or to watch a video overview, go to the AS6200 product page at ams.com.