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High performance integrated RF quadrature / low IF transceiver IC

CML Microcircuits has introduced a high performance integrated RF quadrature / low IF transceiver IC, which features an advanced image-reject up-conversion modulation system and flexible superheterodyne receiver. The new CMX991 is specifically tailored for flexible operation from 1GHz right down to 100MHz. The new IC suites both narrowband and wideband wireless products – up to 2MHz RF channels, including multi-mode analogue/digital terminals, digital software defined radio for portable, mobile and base station designs. Intended applications include APCO Project 25 (Phase 1 and 2), ETSI DMR (TS 102 361), general-purpose wireless data applications and satellite communication systems. The IC integrates the core functions to implement a high performance RF transceiver subsystem, with I/Q architecture capable of supporting multiple modulation types and bandwidth. Features include good intermodulation performance, on-chip 1st mixer, direct access to transmit and receive IF sections and a flexible selection of external components for multi-mode operation. A low IF output mode is supported in the receiver for designers using ‘Sample at IF’ techniques. The IC operates at 3.3V (1.8V I/O) and comes in a 48pin VQFN package.