This device is intended to act as an interface between the analog and digital sections of a Digital Radio System, and performs many critical and DSP-intensive functions. The chip is designed with the necessary capability to meet the requirements for use in both mobile and base station applications in Terrestrial Trunked Radio (TETRA) systems, but the architecture is sufficiently flexible to allow use in other systems.

FEATUREs
• RRC Filters for both Tx and Rx
• π/4 DQPSK Modulation
• 2 x 14-Bit Resolution Sigma Delta D-A
• 2 x 16-Bit Resolution Sigma Delta A-D
• 4 x 10-Bit D-A and 4 Input 10-Bit A-D
• Transmit Output Power Control
• Low Power 3.0 - 5.5Volt Operation
• Effective Power down Modes