Data Sheet

PBA RF Module
ATM511
5GHz Wireless Audio Transceiver
REV: 01
6 /20
4. Operating Description
The SKY76303 SoC has the VMI RF protocol, providing an excellent coexistence performance and also provide
the capabilities of world-class wireless audio protocol by supporting increased digital I/O and OTA (over-the air)
signal routing flexibility to accommodate a wide range of wireless audio application. It features low fixed latency,
multiple OTA audio configurations, uncompressed up to 24bit audio quality mono or stereo audio, excellent
interference immunity, and inherent coexistence with WIFI.
The IC contains all the necessary radio transceiver and digital baseband circuitry to form a complete digital
wireless node without the need for external processing as well as including power management and analog
circuitry.
SKY76303 block diagram
The ATM511 is able to support both the lower and upper bands of 5GHz band RF spectrum, enabling worldwide
coverage.
The highly integrated nature of the SKY76303 transceiver IC results in few external components being required for
the ATM511 module design. 2 printed PCB antennas are used to achieve increased range, and to achieve antenna
spatial diversity. The extended-range RF path consists of the antennas, associated tuning components, external
power amplifier, the RF switch, and two baluns which connected to each of the RF input/output ports on the
SKY76303 IC.