**HMC252AQS24ETR: A Comprehensive Technical Overview of QFN Packaged GaAs MMIC SP6T Switch**

The **HMC252AQS24ETR** represents a high-performance, single-pole six-throw (SP6T) switch engineered on a **Gallium Arsenide (GaAs) Monolithic Microwave Integrated Circuit (MMIC)** process. Housed in a compact, surface-mount 24-lead **4mm x 4mm QFN package**, this component is designed for demanding RF applications where minimal board space, excellent thermal performance, and superior electrical characteristics are paramount. It operates seamlessly from **DC to 8 GHz**, making it an ideal solution for a wide array of wireless systems, including **5G infrastructure, test and measurement equipment, ISM band radios, and military communications**.

A key advantage of the HMC252AQS24ETR is its exceptional **low insertion loss**, typically measuring **0.5 dB at 2 GHz** and **0.7 dB at 6 GHz**. This ensures maximum signal power is transferred through the active path, which is critical for maintaining system link budget and efficiency. Conversely, it provides high **isolation**, typically **40 dB at 2 GHz** and **30 dB at 6 GHz**, effectively preventing signal leakage between the inactive ports and minimizing interference. The switch handles up to **+33 dBm of input IP3**, underscoring its capability to manage high power levels with minimal distortion, a vital feature in transmitter chains.

The integration of a **decoder** simplifies the control interface, requiring only three CMOS/TTL-compatible control lines (V1, V2, V3) to select any one of the six RF outputs. This built-in logic significantly reduces the number of GPIOs needed from the system controller. The device features a **positive control voltage scheme**, requiring a single +3V to +5V supply for the Vdd pin, while the control pins are designed for 0V/+3V to +5V logic levels. Its **QFN packaging** offers a low-profile footprint and an exposed paddle that provides an excellent electrical ground connection and efficient heat dissipation away from the die.

**ICGOOODFIND**: The HMC252AQS24ETR stands out as a robust and highly integrated SP6T switch solution. Its combination of **broadband performance from DC to 8 GHz**, **low insertion loss**, **high power handling**, and **compact QFN form factor** makes it an exceptional choice for designers optimizing next-generation RF systems for size, speed, and signal fidelity.

**Keywords**: GaAs MMIC, SP6T Switch, QFN Package, Low Insertion Loss, High Isolation.