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TDA18254AC1 Folha de dados(PDF) 1 Page - NXP Semiconductors

Nome de Peças TDA18254AC1
Descrição Electrónicos  Cable Silicon Tuner Integrated wideband gain control
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Fabricante Electrônico  NXP [NXP Semiconductors]
Página de início  http://www.nxp.com
Logo NXP - NXP Semiconductors

TDA18254AC1 Folha de dados(HTML) 1 Page - NXP Semiconductors

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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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