CMX90A004 MMIC PA and EV90A004 Evaluation Board for CMX90A004

CML Micro’s CMX90A004 is a two-stage, fully matched MMIC PA delivering +32.5 dBm of saturated power for use in the 860 MHz to 960 MHz frequency range, applicable to license-free bands. The device is optimized for maximum efficiency at collector voltages of 2.7 V to 4.5 V, making it suitable for systems operating from a single-cell Li-ion battery.

The CMX90A004 is highly integrated for ease-of-use, minimizing external component count and reducing board area. RF input and output matching is incorporated on-chip, as well as active bias circuitry and an input DC-blocking capacitor. Using advanced GaAs HBT technology to provide a combination of high efficiency and gain, the CMX90A004 is intended as a high-power final stage ISM band PA in wireless applications.

The EV90A004 embeds the CMX90A004 on a printed circuit board featuring a careful layout that is essential for optimum RF and thermal performance. The PCB consists of four layer FR-4 with a total thickness of 1.6 mm and the EV90A004 PCB is 50 mm x 50 mm. The microstrip RF input and output width is 0.35 mm.