Optoelectronics

New Cartesian Feedback Loop IC Boasts 30MHz to 1GHz Range

22nd October 2010
ES Admin
CML Microcircuits has announced the long-anticipated upgrade of its highly integrated solution for transmitter linearisation, the CMX998. The CMX998 is now even more flexible boasting an impressive RF operating range of 30MHz to 1GHz, representing a state-of-the-art solution ideal for portable devices. Not only is flexibility on hand, but high performance, low wide-band noise and a high degree of linearisation gain too. With the world going digital, the need for enhanced data speeds and bandwidth efficiency is ever increasing, driving the move to more complex linear modulation schemes.
The CMX998 provides all of the building block functions needed to implement a Cartesian feed-back loop transmitter in a two-way radio design, offering the designer ultimate performance, flexibility, small size and fast time-to-market.

The device is ideally suited to multimode Software Defined Radio (SDR) systems, significantly improving the efficiency and linearity of transmitters and can support a wide range of linear modulation formats and standards, including TDMA operation, TETRA mobile station power classes up to 3W (Class-3), APCO P25 and TETRA 2 terminals. Other suitable applications include aviation systems, mobile satellite terminals and many more using linear modulation schemes.

The upgraded CMX998 integrated solution is available now, operating in the range 3V to 3.6V and available in a 64-pin VQFN package with an added thermal ground pad to aid performance. An evaluation kit (EV9980) is also available.

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