•  
• EDN Europe MAGAZINE
•  
• Free SUBSCRIPTION
• Subscription Renewal
• View Media Kit

• EDN
• EDN Australia
• EDN Asia
• EDN China
• EDN Japan

Quadrature/low IF receiver

CML Microcircuits has introduced a quadrature receiver to its family of RF integrated circuits. The new CMX992 is an integrated product offering high performance and low noise figures. Designed to meet the requirements of Wireless Data and PMR/LMR radio systems, this product utilises a superheterodyne receiver section along with IF local oscillator circuitry. Operating from 100MHz to 1GHz, the CMX992 supports multi-standard digital and analogue systems of both constant envelope and linear modulation types. The product’s I/Q architecture supports a range of modulation types, with various integrated, selectable functions on offer to maintain performance across multiple modulations and bandwidths. The Rx path includes an integrated 1st RF mixer having two outputs to support two external 1st IF filter choices, then an integrated 2:1 filtered 1st IF input MUX, followed by VGA and wideband RSSI functions to support AGC implementation. The 1st IF signal can be either I/Q demodulated to zero IF, or mixed down to a Low IF output. The demodulator outputs are analogue, for simplified connection to external low-power ADCs.