ADI ADA4304-3ACPZ-R7

The ADA4304-3/ADA4304-4 are 75 Ω active splitters for use in applications where a lossless signal split is required. Typical applications include multituner digital set-top boxes, cable splitter modules, multituners/digital cable ready (DCR) televisions, and home gateways where traditional solutions require discrete passive splitter modules with separate fixed gain amplifiers. The ADA4304-3/ADA4304-4 are fabricated using the proprietary silicon germanium (SiGe), complementary bipolar process, enabling them to achieve very low levels of distortion with a noise figure of 4.6 dB. 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. The ADA4304-3/ADA4304-4 are available in a 16-lead LFCSP and operate in the extended industrial temperature range of -40℃ to +85℃.

• Ideal for CATV and terrestrial applications
• 2.4 GHz, −3 dB bandwidth 1 dB flatness: 54 MHz to 865 MHz
• Low noise figure: 4.6 dB
• Low distortion Composite second-order (CSO): −62 dBc Composite triple beat (CTB): −72 dBc
• Nominal 3 dB gain per output channel
• 25 dB output-to-output isolation, 50 MHz to 1000 MHz
• 75 Ω input and outputs
• Small package size: 16-lead, 3 mm × 3 mm LFCSP

• Set-top boxes
• Residential gateways
• CATV distribution systems
• Splitter modules
• Digital cable ready (DCR) TVs
• The ADA4304-3/ADA4304-4 active splitters are primarily intended for use in the downstream path of television set-top boxes (STBs) that contain multiple tuners. They are typically located directly after the diplexer in a bidirectional CATV customer premise unit. The ADA4304-3/ADA4304-4 provide a single-ended input and three or four single-ended outputs that allow the delivery of the RF signal to multiple signal paths.