TDA18254AHN

TDA18254AHN Cable Silicon Tuner Rev. 4 — 10 May 2011 Product short data sheet 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-t...