CMX983 - Consumer Microcircuits Limited

CMX983 Analogue Front End

The CMX983 is an Analogue Front End (AFE) IC that bridges the gap between a digital radio’s RF section and the DSP. Specifically designed to meet the needs of a Software Defined Radio (SDR), the CMX983 performs critical DSP-intensive functions, provides dual channel analogue to digital and digital to analogue conversion, includes two RF fractional-N synthesi.

Features

 Rx channel
 Two 16-bit Σ-Δ ADCs
 Programmable Channel Filter
 Tx Channel
 Two 14-bit Σ-Δ DACs
 Programmable Channel Filter
 RF Support
 Two 2.1GHz Fractional-N Synthesisers
 Auxiliary Functions
 10-bit ADC supporting 10 inputs
 Five Analogue Comparators
 10-bit DACs driving 9 outputs
 DSP Interface
 C-BUS Control and Configuration Port
 Fast Serial Interface for Rx/Tx Data Provisional Information
 Duplex and Half duplex operation
 Narrow bandwidth and wide bandwidth operating modes
 Direct connection to
 CMX998 Cartesian Loop Transmitter
 CMX994 Direct Conversion Receiver.