ADV7441A Просмотр технического описания (PDF) - Analog Devices

Номер в каталоге

Компоненты Описание

Список матч

ADV7441A

10-Bit Integrated, Multiformat SDTV/HDTV Video Decoder, RGB Graphics Digitizer, and 2:1 Multiplexed HDMI/DVI Interface

Analog Devices 

COMPONENT VIDEO PROCESSING

The ADV7441A supports 525i, 625i, 525p, 625p, 720p, 1080i,

1080p, and many other HDTV formats; automatic adjustments

for gain (contrast) and offset (brightness); manual adjustment

controls; analog component YPrPb/RGB video formats with

embedded synchronization or with separate HS, VS, and CS;

and YCrCb-to-RGB and RGB-to-YCrCb conversions by any-to-

any, 3 × 3, color-space conversion matrices.

In addition, the ADV7441A features brightness, saturation, and

hue controls. Standard identification (STDI) enables detection

of the component format at the system level, and a synchroniza-

tion source polarity detector (SSPD) determines the source and

polarity of the synchronization signals that accompany the

input video.

Certified Macrovision copy protection detection is available on

component formats (525i, 625i, 525p, and 625p).

When no video input is present, free-run output mode provides

stable timing.

The ADV7441A supports user-defined pixel sampling for

nonstandard video sources and arbitrary pixel sampling

for nonstandard video sources.

ADV7441A

RGB GRAPHICS PROCESSING

The ADV7441A provides 170 MSPS conversion rate support of

RGB input resolutions up to 1600 × 1200 @ 60 Hz (UXGA) and

automatic or manual clamp and gain controls for graphics models.

The RGB graphics processing functionality features contrast

and brightness controls, automatic detection of synchronization

source and polarity by the SSPD block, standard identification

enabled by the STDI block, and user-defined pixel sampling

support for nonstandard video sources.

Additional RGB graphics processing features of the ADV7441A

include the following:

• Sampling PLL clock with 500 ps p-p jitter at 170 MSPS.

• 32-phase DLL support of optimum pixel clock sampling.

• Color-space conversion of RGB to YCrCb and decimation

to a 4:2:2 format for videocentric back-end IC interfacing.

• Data enable (DE) output signal supplied for direct

connection to the HDMI/DVI transmitter IC.

GENERAL FEATURES

The ADV7441A features HS, VS, and FIELD output signals with

programmable position, polarity, and width; and programmable

interrupt request output pins, INT1 and INT2.

The part also offers low power consumption: 1.8 V digital core,

1.8 V analog, and 3.3 V digital input/output and low power power-

down mode.

The ADV7441A operates over a temperature range of −40°C

to +85°C and is available in a 144-lead, 20 mm × 20 mm, RoHS-

compliant LQFP.

Rev. B | Page 15 of 28

Share Link: