Microsemi has very low power RF chip for patient monitors
Microsemi has introduced a very low power RF transceiver for short-range wireless applications which draws only 2mA of current when transmiting and receiving data.
The radio operates in unlicensed frequency bands between 795MHz and 965MHz and will supprt a data rate of 186kbit/s.
The ZL70250 radio transceiver is designed to operate from supply voltage (1.1V to 1.9V).
“Lead customers have reported outstanding power saving capabilities when using compact coin cell batteries with 1.4V and 1.5V supply,” said Mauricio Peres, director of business development of Microsemi’s ultra low power (ULP) group.
The device has a 2mm x 3mm die size and can be integrated into a single chip scale package (CSP) with the exception of a bias resistor and a supply decoupling capacitor.
One application for the radio transceiver is in patient monitors. According to the supplier, wireless technology in the medical industry has limitations to battery life when transporting multiple vital sign streams to a display instrument.
Continuous vital sign monitoring applications such as electro cardiogram (ECG) rhythm or blood oxygen level (pulse oximetry) tracking can drain the battery supply quickly to an operating duration of one day or less.
Current lab trials at Microsemi using CR-2032 coin cells show a significant improvement to battery life in continuous patient monitoring applications such as wireless ECG and pulse oximetry when compared to existing off the shelf solutions using AA batteries.
Development tools for the ZL70250 CSP include application development kits, a low power wireless communication software code starter for point to point connections and reference designs of wireless sensors based on CR-2032 coin cell batteries.