HMC788ALP2E: A High-Performance 6-Bit Digital Step Attenuator for Advanced RF and Microwave Systems

Release date:2025-09-04 Number of clicks:95

**HMC788ALP2E: A High-Performance 6-Bit Digital Step Attenuator for Advanced RF and Microwave Systems**

The **HMC788ALP2E** represents a significant advancement in the field of digitally controlled attenuation, engineered to meet the stringent demands of modern **RF and microwave systems**. This 6-bit digital step attenuator (DSA) offers a precise and reliable solution for applications requiring dynamic signal level control, from test and measurement equipment to aerospace and defense communications.

A key feature of the HMC788ALP2E is its **exceptally high linearity and low insertion loss**. Operating over a broad frequency range from DC to 6 GHz, it provides **64 precise attenuation states** with a step size of 0.5 dB, culminating in a total attenuation range of 31.5 dB. This fine resolution allows system designers to make accurate, real-time adjustments to signal amplitude with minimal phase shift, which is critical for maintaining signal integrity in complex modulation schemes like 256-QAM and 1024-QAM used in 5G and satellite links.

The device is built on a **highly reliable GaAs IC process**, ensuring robust performance and stability across a wide temperature range (-40°C to +85°C). Its **integrated CMOS-compatible drivers** simplify interface with FPGAs and microcontrollers, reducing external component count and board space. The HMC788ALP2E also features a **serial control interface**, enabling daisy-chaining of multiple devices for more complex attenuation profiles without significantly increasing control complexity.

Furthermore, its **compact 3mm x 3mm LFCSP package** makes it ideal for space-constrained applications without compromising thermal performance or power handling capabilities. With a **switching speed of less than 1 µs**, it is perfectly suited for fast-hopping frequency systems and other time-sensitive scenarios.

**ICGOODFIND:** The HMC788ALP2E stands out as a superior component for designers seeking high precision, broad bandwidth, and integration ease in next-generation wireless systems.

**Keywords:** Digital Step Attenuator, High Linearity, RF and Microwave Systems, GaAs IC, Serial Control Interface.

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