CMX901/CMX902 Broadband RF Power Amps

CML Microcircuits' CMX901 and CMX902 are three-stage, high-gain, high-efficiency RF power amps. These devices are ideal for VHF and UHF bands up to 950 MHz (CMX901) and up to 700 MHz (CMX902). The first and second stages of the amplifier operate in Class A and Class AB modes, respectively, and the third stage operates in Class C mode for maximum efficiency. The output power of the CMX902 device is 20% higher than that of the CMX901.

An external component is required to match the input and output ports of the device to 50Ω. The power amplifier is available in a small 5 mm x 5 mm, low thermal resistance 28-pin WQFN package, making it ideal for small applications such as the CMX902.

Features

·        Wide operating frequency ranges: 130 MHz to 950 MHz and 130 MHz to 700 MHz

·        Typical output power:

§  2.5 W operates at 160 MHz and 2.8 W operates at 160 MHz

§  1.8 W operates at 435 MHz and 1.75 W operates at 435 MHz

§  1.5 W operates at 915 MHz

·        High power gain: 40 dB and 39 dB

·        High power added efficiency up to 60% at VHF

·        Single polarity supply voltage: 2.5 V to 6 V

·        Small 28-pin WQFN package

Applications

·        Wireless data communications:

§  FSK, FFSK/MSK, GFSK/GMSK, and multi-level FSK

·        Analog FM handheld radio terminals

·        Marine AIS Class B and Marine AIS-SART

·        915 MHz ISM amp (CMX901)

·        Automatic meter reading (AMR)

·        Wireless sensor networks:

§  Mesh/ad hoc systems

·        Remote controls and sensing systems

·        Commercial and consumer communications