austriamicrosystems AS3900 27 low-power transceiver

austriamicrosystems has introduced the AS3900 27 MHz FSK (frequency shift keying) low-power transceiver.

The device features built-in star network management protocol and is said to be the only transceiver operating in the 27 MHz worldwide ISM (industrial, scientific and medical) band.

Operation in this band avoids the interference found in the cluttered 2.4 GHz band and results in a lower amount of energy being absorbed by the human body.

The transceiver features the companyÂ’s built-in star network management protocol that offers a hardwired, royalty-free, easy-to-use protocol for self-management of all network functions.

The network protocol simplifies product design and reduces system power compared with alternative approaches requiring protocols that run full-time on an external or internal microcontroller.

The low-powered transceiver requires 2.5 µA in polling mode, and typically 3.8 and 4.9 mA in receive and transmit modes, including the power required to manage the star network.

The device transmits data at up to 212 Kbps and integrates a number of key features, resulting in a low bill of materials. Integrated functions include the power amplifier, clock, 24 bits of OTP memory, battery-level detection, power on reset and system timers.

Digital RSSI, onboard CRC (cyclic redundancy check) and a bi-directional SDI bus (serial digital interface) allow system integration.