Datasheet > TDA18254AHN

TDA18254AHN

更新时间： 2024-01-26 17:23:36

品牌	Logo	应用领域
恩智浦 - NXP		电视有线电视
页数	文件大小	规格书
8页	133K
描述
Cable Silicon Tuner Integrated wideband gain control

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TDA18254AHN 数据手册

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-through

Fully integrated IF selectivity, eliminating the need for external SAW filters

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