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TDA18254AC1 Folha de dados(PDF) 1 Page - NXP Semiconductors |
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1 / 8 page 1. General description The TDA18254AHN is a Silicon Tuner IC designed specifically for high definition multi-tuner cable Set Top Boxes (STB) supporting single streaming and multi-streaming PVR STBs with watch, record, Video-On-Demand (VOD) and in-home video distribution capability. Used in conjunction with the TDA10024HN (digital channel demodulator), the TDA18254AHN covers all worldwide digital cable standards. • The TDA18254AHN ensures a low system cost as: – Costly components such as low-noise amplifiers, Surface Acoustic Wave (SAW) filters are eliminated from the system BOM • The TDA18254AHN high-performance Silicon Tuner meets today’s digital cable TV reception needs with: – Same level of performance for master and slave tuners – Low power consumption – High linearity – Low noise figure • The TDA18254AHN ensures ease of use with: – Easy on-board integration – Efficient and effective PCB design – Reduced external components 2. Features and benefits Supports 4 tuner functions specifically aimed for PVR boxes: 1 × low IF output 3 × RF outputs to drive slave tuners Integrated wideband gain control Extended frequency coverage up to 1002 MHz Integrated RF tracking filters for rejection of unwanted signals Single 3.3 V power supply Low power consumption Multistandard cable receptions Enhanced RF and IF filters to increase selectivity and adjacent channels filtering RF loop-through Fully integrated IF selectivity, eliminating the need for external SAW filters TDA18254AHN Cable Silicon Tuner Rev. 4 — 10 May 2011 Product short data sheet |
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