What made you select CML Micro’s CMX90A009 Power Amplifier?
Designing high-power RF front ends for professional and mission-critical communications systems presents a complex set of challenges. Engineers must balance linearity and efficiency, manage thermal dissipation, and ensure robustness across a wide range of environmental conditions. Additionally, support for a variety of modulation schemes and the ability to operate across multiple frequency bands are essential to meet the requirements of modern communications platforms.
I selected the CML Micro CMX90A009 power amplifier because it addresses these critical demands with a compact, high-efficiency design optimized for wideband operation. This single-stage GaAs HBT amplifier delivers +40 dBm (10 W) output power with over 60% collector efficiency at 435 MHz, operating from a 7.4 V supply. Housed in a thermally enhanced DFN package, the CMX90A009 requires external input/output matching to allow for flexible integration into diverse system architectures and frequency plans. The amplifier supports saturated and linear modes and is ideal for use as the final stage in transmit lineups, especially when paired with the CMX90A007 driver and CMX998 Cartesian feedback loop IC for complex modulation schemes.
What are the key features and specifications of the CMX90A009?
- Frequency Range: 136 to 1000 MHz
- Supply Voltage: 6 to 9.5 Volt (Ideal for Dual-cell Li-ion)
- Output Power (P3dB): +40 dBm at 435 MHz, VCC = 7.4V
- Small Signal Gain: 17 dB
- Collector Efficiency: > 60% at P3dB
- On-chip Active Bias for Temperature Stability
- Supports Both Saturated and Linear Operation
- Output IP3: +45 dBm at +33 dBm/tone (435 MHz)
- Thermally Enhanced DFN Package
What are the common markets and applications of the CML Micro CMX90A009 Power Amplifier?
- Critical Communications
- PMR/LMR Hand-portable Radios
- Analog and Digital Two-way Radios
- Public Safety Networks (TETRA, P25)
- Wireless Data Modems and Mesh Networks
- VHF/UHF and 915 MHz ISM Band Systems
- Marine Communications and AIS Systems
About Tim Daly
Tim Daly is an RFMW Supplier Business Manager with over 30 years of experience in the RF & microwave industry. Tim has spent his career in product management and sales roles for well-known semiconductor companies, supporting some of the industries leaders in RF & microwave products.
