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The ADV7850 is a high quality, single chip, multiformat video decoder graphics digitizer with an integrated 4:1 multiplexed HDMI® receiver.

This multiformat 3D comb filter decoder supports the conversion of PAL, NTSC, and SECAM standards in the form of a composite or an S-Video input signal into a HDMI output stream. SCART and overlay functionality are enabled by the ability of the ADV7850 to process CVBS and standard definition RGB signals simultaneously.

The ADV7850 contains one main component processor (CP) that processes YPrPb and RGB component formats, including RGB graphics. The ADV7850 can operate in quad HDMI and analog input mode, thus allowing for fast switching between the analog video inputs and HDMI.

The ADV7850 supports the decoding of a component RGB/ YPrPb video signal into a HDMI output stream. The support for component video includes 525i, 625i, 525p, 625p, 720p, 1080i, 1080p, and 1250i standards, as well as many other SMPTE and HD standards.

The ADV7850 supports graphics digitization. The ADV7850 is capable of digitizing RGB graphics signals from VGA to UXGA rates and converting them into an HDMI output stream. Internal EDID RAM is available for one graphics port.

The ADV7850 incorporates a quad input HDMI-compatible receiver that supports all HDTV formats up to 3D 1080p 60 Hz and 2160P 24 Hz.

The ADV7850 supports full HDCP decryption with internal key storage. The ADV7850 features HDCP authentication on all ports simultaneously. The feature allows fast switching between HDMI ports. Sync measurements and status monitoring are also available for all HDMI ports. Each HDMI port has dedicated 5 V detect and hot plug assert pins. The HDMI receiver also includes an integrated equalizer that ensures robust operation of the interface with cable lengths up to 30 meters. The HDMI receiver has advanced audio functionality, such as a mute flag, that prevents audible extraneous noise in the audio output.

In addition, the HDMI receiver incorporates internal EDID support, which can be made available in full power, powerdown, and power-off modes. An internal regulator supplies external EDID memory from the HDMI 5 V signal in poweroff mode.

The ADV7850 incorporates Xpressview™ fast switching on all HDMI input ports. Using the Analog Devices, Inc., hardwarebased HDCP engine that minimizes software overhead, Xpressview technology allows fast switching between any two HDMI input ports in less than 1 second.

The ADV7850 offers a flexible audio output port for the audio data decoded from the HDMI stream. HDMI audio formats, including super audio CD (SACD) via DSD, DST, and HBR are supported.

The ADV7850 also features the single mode audio return channel (ARC) feature. ARC simplifies cabling by combining upstream audio capability in a conventional HDMI cable.

The stereo audio ADC converts analog audio inputs and provides the data to the back end via the HDMI interface. The stereo audio DAC receives I2S data from the back end and converts it to analog audio output. The audio output is available as both high impedance and a driven output, which is suitable for driving headphones directly.

Fabricated in an advanced CMOS process, the ADV7850 is provided in a 19 mm × 19 mm, 425-ball, CSP_BGA, surfacemount, RoHS-compliant package, and is specified over the −20°C to +70°C temperature range.

APPLICATIONS

  • HDTVs
  • Set-top boxes
  • AV receivers
  • Projectors
  • Video matrix switchers

ОСОБЕННОСТИ И ПРЕИМУЩЕСТВА

Main Features

  • Four port HDMI® XpressviewTM Receiver
  • 170 MHz video and graphics digitizer

HDMI Support

  • 3D TV Support
  • Audio Return channel (ARC)
  • Extended colorimetry

4:1 HDMI 297MHz Receiver

  • Support for up to 16 VSI’s (including THX Media Director™)
  • Fast switching of HDMI ports (XpressviewTM)

High-speed serial output (TMDS 297MHz)

  • Full transmitter support including encryption
  • Can operate in a transceiver configuration

Video and graphics digitizer

  • Digitizes RGB graphics up to 1600 × 1200 at 60 Hz (UXGA)
  • SD, ED and HD TV support up to 1080p at 60 Hz

3D comb Video Decoder

  • Full NTSC/PAL/SECAM color standards support
  • Adaptive 3D comb filter video decoder

Audio CODEC

  • 24-bit, 48 kHz Stereo CODEC
  • 5-channel stereo analog input mux with a stereo output

General

  • Internal EDID RAM for HDMI and graphics
  • Dual STDI (standard identification) function support for dual input detection
  • See data sheet for additional features

Functional Block Diagram for ADV7850

Engineer Zone Video Support Community

Документация

Наименование Тип контента Тип файлов
ADV7850: Complete AV Front-End Datasheet (Rev 0, 05/2012) (pdf, 85 kB) Технические описания PDF
AN-1277: Utilizing the Cyclic Redundancy Check Block of the ADV7850  (pdf, 99 kB) Статьи по применению PDF
AN-1260: Crystal Design Considerations for Video Decoders, HDMI Receivers, and Transceivers  (pdf, 126 kB) Статьи по применению PDF
AN-1180: Optimizing Video Platforms for Automated Post-Production Self-Tests  (pdf, 187 kB) Статьи по применению PDF
UG-420: Advantiv EVAL-ADV7850 Video Evaluation Board  (pdf, 326 kB) Руководства пользователей PDF
ADV7850 Design Support Files Руководства пользователей HTML
Enabling HDMI in the Automotive Segment
(John Day's Automotive Electronics, November 2012)
Технические статьи HTML
Словарь терминов Глоссарий HTML

Средства разработки, программные модели, драйверы и ПО

Наименование Тип контента Тип файлов
ADV7850 HDMI Receiver Library API Source Code for any OS\Platform (exe)
This software is protected by copyright law and international treaties. As a condition to accessing or using the software you must agree to the terms of the associated software license agreement.
Программные модули HTML

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Приведенные цены действительны в США и указаны только для примерного бюджетного рассчета. Цены указаны в долларах США (за штуку в указанном размере партии) и могут быть изменены. Цены в других регионах могут отличаться в зависимости от местных пошлин, налогов, сборов и курсов валют. Для уточнения стоимости обращайтесь в местные офисы продаж Analog Devices, или к официальным дистрибьюторам. Цены на оценочные платы и наборы указаны за штуку независимо от количества.

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