austriamicrosystems, a leading global designer and
manufacturer of high performance analog ICs, has announced the AS3940, the
first fully integrated 2.4 GHz multi-channel FSK (frequency shift keying)
transceiver with integrated link manager for reliable control of star networks
(up to eight clients). It features low power, high sensitivity (-100 dBm @
250kbps, -92 dBm @ 2 Mbps), data rates from 250 kbps up to 2 Mbps, and
integrates a digital RSSI (received signal strength indictor), real-time-clock
(RTC) and programmable clock output, a Gaussian filter, PLL (phase locked loop),
and loop filter.
The AS3940 is the first 2.4 GHz transceiver with built-in
star network management protocol manager that is royalty-free and provides an
easy-to-use protocol for self-management of all network functions. This high
level of integration not only speeds system design, but also decreases the
MCU’s workload and ensures robust data transfer (burst and streaming modes) and
correct protocol handling. The AS3940 also offers excellent adjacent channel
rejection and sensitivity (-100 dBm @ 250 kbps, -92 dBm @ 2Mbps) and unique
features like battery voltage monitoring, adaptive channel switching,
integrated TX/RX switch, and four separate 256-bit user data buffers.
Other features include programmable output power, efficient
power management and power-optimized wakeup modes, battery voltage detection, and
adaptive channel switching/support of frequency hopping.