Datasheet > 88DE8025

88DE8025

更新时间： 2022-12-16 18:28:31

品牌	Logo	应用领域
迈威 - MARVELL		电视
页数	文件大小	规格书
2页	263K
描述
Hybrid Demodulators Supports DVB-C/DVB-T/Analog-TV Standards

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88DE8025 数据手册

Marvell 88DE8020/25 Hybrid Demodulators

Supports DVB-C/DVB-T/Analog-TV Standards

PRODUCT OVERVIEW

The Marvell^®88DE8020 and 88DE8025 hybrid demodulators with integrated ClearRF^TMtechnology enable robust

TV reception under complex signal impairment conditions in terrestrial and cable networks. The demodulators

are compatible with typical low/high IF tuners and TV decoders. The 88DE8020 supports DVB-C/DVB-T/NTSC/

PAL/SECAM demodulation, while the 88DE8025 supports DVB-T/NTSC/PAL/SECAM demodulation. Both devices

can demodulate 2K and 8K COFDM modulated signals based on the ETSI speciﬁcation (ETSI EN 300 744) and

QAM modulated signals based on the DVB-C speciﬁcation (ETSI EN 300 429). They can also be programmed to

demodulate analog NTSC/PAL/SECAM TV inputs and output CVBS and Sound IF signals.

BLOCK DIAGRAM

To Crystal

PLL

DVB-C

Demodulator

(Not Available in DE8025)

MPEG2-TS

Outer

De-Interleaving

Decoding

MPEG

Formatter

DVB-T

Demodulator

CVBS

SIF

ADC

Common

Front End

Video

From Tuner

Processing

DAC

NTSC/PAL/SECAM

Demodulator

Audio

Processing

Audio

DAC

Analog/DTV

Mode

Detection

TWSI

Repeater

TWSI

Slave

To Host

Micro-Controller

To Tuner

Fig 1. Block Diagram of Marvell 88DE8020 and 88DE8025 Hybrid Demodulators

KEY FEATURES AND BENEFITS

FEATURES

BENEFITS

• Low proﬁle single chip hybrid demodulator with option to use clock

• Enables slim TV chassis with lower bill of materials. No need for multiple

from tuner source

chips, SAW ﬁlters, crystals and passives

• Pin-compatible with Marvell demodulators supporting other standards

• Enables TV makers to develop single worldwide multiformat decoder

chassis with plug-and-play RF front-end

• ClearRF technology provides robust performance exceeding standard

• Good reception in challenging ﬁeld conditions including:

DVB-T requirements

- Adjacent/co-channel interference from changing troposphere

conditions

-Dynamic echoes in Single Frequency Network (SFN) countries like

Germany/Spain

-Local noise from household appliances, light switches and ignition

systems

• ClearRF technology provides excellent C/N performance in challenging

• Robust cable reception in DVB-C networks carrying High Deﬁnition (HD)

DVB-C 256QAM networks

signals

• ClearRF technology provides good picture quality even for standard

• Sharp picture and tolerance to over-modulated signals

analog signals

• Hybrid blind scan for simultaneous detection of analog and digital

• Quick out-of-box TV setup for seamless analog, digital channel

signals from terrestrial and cable networks

reception

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