**HMC498: A 6-12 GHz GaAs MMIC Medium Power Amplifier for Broadband Applications**

The demand for high-performance, broadband amplification solutions continues to grow across modern electronic systems, including test and measurement equipment, electronic warfare (EW) platforms, satellite communications, and radar systems. Addressing this need, the **HMC498** stands out as a high-efficiency GaAs MMIC (Monolithic Microwave Integrated Circuit) medium power amplifier that delivers exceptional performance across the **6 GHz to 12 GHz** frequency range.

Fabricated on a advanced Gallium Arsenide (GaAs) process, this MMIC amplifier integrates all components onto a single chip, ensuring robust reliability and repeatable performance. The HMC498 is engineered to provide a critical balance of **high output power** and **exceptional gain flatness**. It typically delivers a saturated output power (**Psat**) of **+27 dBm** and a output third-order intercept point (OIP3) of approximately +35 dBm, making it highly suitable for both linear and saturated operating conditions. The amplifier achieves a small-signal gain of **18 dB**, with remarkably flat gain variation across the entire band, which is a paramount requirement for broadband applications where signal integrity must be maintained.

A key feature of the HMC498 is its **high efficiency**, which directly contributes to improved system thermal management and reduced power consumption. The amplifier requires a single positive supply voltage between +5V and +8V, simplifying biasing requirements. It is also internally matched to 50-Ohms, which significantly simplifies the design-in process by minimizing the need for external matching components at both the input and output ports. This integration allows for a more compact system design and reduces both board space and overall component count.

The device is offered in a standard **4x4 mm RoHS-compliant QFN (Quad-Flat No-Lead) surface-mount package**, making it suitable for high-volume automated assembly. Its rugged construction is designed to withstand harsh operating environments, supporting a wide range of commercial and aerospace/defense applications.

**ICGOODFIND:** The HMC498 is an outstanding solution for designers seeking reliable, high-power, and efficient amplification across the entire X-band and into portions of the C-band. Its excellent gain, power output, and broadband performance in a compact, easy-to-use package make it a superior choice for advancing the capabilities of next-generation RF and microwave systems.

**Keywords:** Broadband Amplifier, GaAs MMIC, Medium Power Amplifier, X-Band, High Efficiency