RFMW announces design and sales support for CML Microcircuits’ CMX902 RF power amplifier IC. Offering greater than 60% efficiency at VHF frequencies, this 3-stage amplifier spans 130 to 700 MHz with up to 39 dB of RF power gain. Output power at 160 MHz, with a 4V supply, reaches 2.8 watts. At 435 MHz, 1.75 watts is available with a 3.3V supply supporting IoT and Smart Meter applications in the ISM band. Other applications include VHF and low-UHF radio such as data module and Marine VHF communications. 

The first and second amplifier stages operate in a class-A and class-AB mode respectively. The third stage operates in class-C mode for maximum efficiency. Input and output matched circuits are implemented via external components and therefore can be adjusted to obtain maximum power and efficiency at the desired operating frequency. The CMX902 is available in a small footprint 5 x 5 mm, low thermal resistance, 28-pin, WQFN package.