TDA18260HN集成电路（IC）的视频处理规格书PDF中文资料

General description

The TDA18260HN is a dual silicon tuner IC designed specifically for high definition multi-tuner cable Set-Top Boxes (STBs) supporting single streaming and multi-streaming PVR STBs with watch, record, video-on-demand and in-home video distribution capability.

Used in conjunction with the TDA10025HN (dual digital channel demodulator), the TDA18260HN covers all worldwide digital cable standards.

• The TDA18260HN ensures a low system cost as:

– Costly components such as low noise amplifiers, Surface Acoustic Wave (SAW)

filters and incremental crystal oscillators have been eliminated from the system Bill

Of Materials (BOM)

• The TDA18260HN high performance silicon tuner meets today’s digital cable TV reception needs with:

– Matched performance levels for master and slave tuners

– Low power consumption

– High linearity

– Low noise figure

• The TDA18260HN ensures ease of use with:

– Easy on-board integration

– Efficient and effective PCB design

– Reduced external components

Features and benefits

■ Dual tuner inside one single, small sized package

♦ One single RF input with direct cable connection

♦ Internal splitter to drive the two integrated tuners

♦ Two low IF outputs, connecting directly to demodulators

■ RF loop-through

■ Easy application for up to 6-tuner using 3 TDA18260HN

♦ Dedicated multiple tuner outputs to drive additional tuners

♦ No need for external active splitter

♦ Same performance on all streams

■ Extended frequency coverage from 42 MHz up to 1002 MHz

■ Multistandard cable receptions

■ Enhanced filtering scheme with no external components

♦ Third and fifth signal harmonics suppression

♦ Optimum adjacent channel rejection

♦ MoCA rejection reduces the complexity and the cost of the triplexer

■ Single 3.3 V power supply with low power consumption

■ Single crystal application for up to 6 streams, including demodulators

■ High accuracy Received Signal Strength Indicator (RSSI)

■ Dual I2C-bus provides full flexibility in programming the two streams from one SoC or

independently from two SoCs