Analog Devices Inc. ADA4304-3/-4单端有源射频分路器

Analog Devices ADA4304-3/-4单端有源射频分路器是75Ω有源分路器，适用于要求无损信号分路的应用中。典型应用有多路调谐器（multituner）数字机顶盒、电缆分路器模块、多路调谐器/数字电缆就绪（DCR）电视以及传统解决方案要求分立无源分路器模块及单独的固定增益放大器的家庭网关。ADA4304-3/ADA4304-4采用ADI公司专有的硅-锗（SiGe）互补双极性工艺制造，可实现极低的失真水平，噪声系数为4.6dB。该器件将一个信号分离器元件和一个增益模块集成到一块IC，简化了设计并提高了系统性能，是低成本的替代方案。

The ADA4304-3/-4 are fabricated using the ADI proprietary silicon germanium (SiGe), complementary bipolar process, enabling them to achieve very low levels of distortion with a noise figure of 4.6dB. The parts provide low cost alternatives that simplify designs and improve system performance by integrating a signal splitter element and a gain block into a single IC.

特性

Ideal for CATV and terrestrial applications
2.4GHz, −3dB bandwidth:
- 1dB flatness is 54MHz to 865MHz
4.6dB low noise figure
Low distortion:
- −62dBc Composite second-order (CSO)
- −72dBc Composite triple beat (CTB)