For the unlicensed 27-MHz band, the AS3900 FSK transceiver integrates star network management and Link manager technology, a hardwired, royalty-free protocol for self-management of all network functions. Current consumption is 2.5 µA in polling mode and 3.8 and 4.9 mA in receive and transmit modes, respectively. Other features include data transmissions to 212 kb/s, a 32.768 kHz oscillator, 24 bits of OTP memory, battery level detection, wakeup receiver functionality, digital received signal strength indication, 2.2V operation, and a bi-directional serial digital interface. In a 28-pin, 5 mm x 5 mm QFN, pricing is less than $3 each/1,000. AUSTRIAMICROSYSTEMS USA INC., Raleigh, NC. (919) 676-5292.