The ISM band is extensively for wireless solutions used across a number of market segments including:
In many of these applications the ability to operate using a single alkaline or even a zinc-air battery or using energy savaging techniques e.g. solar cells, piezo electric push buttons, can make otherwise unrealizable applications possible.
To meet this market demand, AnSem developed an ultra low-power RF ISM FSK transceiver in 0.25µm CMOS with a operational voltage range 0.9 V to 1.6 V and a power consumption of 2.6mW for transmission / 1.2mW for reception. The device is highly flexible including:
The RF ISM FSK transceiver also features built in filtering of FSK modulation for low adjacent channel power, quick crystal startup plus a fast PLL for use of frequency hopping spread spectrum. The receiver has a high sensitivity considering its low power consumption, which makes it suitable for watchdog applications. Both short and mid range (~100m) communication are supported.