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ADV7280/ADV7281/ADV7282/ADV7283 Hardware
Reference Manual
UG-637
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
ADV7280/ADV7281/ADV7282/ADV7283 Functionality and Features
OVERVIEW
This user guide provides a detailed description of the
functionality and features of the ADV7280, ADV7280-M,
ADV7281, ADV7281-M, ADV7281-MA, ADV7282,
ADV7282-M, and ADV7283 video decoders. Table 1 list the
shorthand notations used for these decoders in this user guide.
The ADV7280, ADV7280-M, ADV7281, ADV7281-M,
ADV7281-MA, ADV7282, ADV7282-M, and ADV7283
automatically detect and convert standard composite analog
baseband video signals compatible with worldwide NTSC, PAL,
and SECAM standards. These video recorders accept composite
video signals (CVBS) as well as S-Video (YC) and YPbPr video
signals, supporting a wide range of consumer and automotive video
sources. The ADV7281, ADV7281-M, ADV7281-MA,
ADV7282, ADV7282-M, and ADV7283 models can also accept
pseudo differential and true differential CVBS inputs.
The ADV728x-T models (ADV7280, ADV7281, ADV7282, and
ADV7283) convert the analog video inputs into a YCrCb 4:2:2
component video data stream that is compatible with the 8-bit
ITU-R BT.656 interface standard.
The ADV728x-M models (ADV7280-M, ADV7281-M,
ADV7281-MA, and ADV7282-M) convert the analog video
inputs into an 8-bit YcrCb 4:2:2 video stream, and that is output
over an MIPI CSI-2 interface. This MIPI CSI-2 output interface
connects to a wide range of video processors and FPGAs.
The AGC and clamp-restore circuitry allow an input video signal
peak-to-peak range to 1.0 V at the analog video input pin of the
ADV728x. Alternatively, these can be bypassed for manual
settings.
AC coupling of the input video signals provides STB protection.
On the ADV7281, ADV7281-M, ADV7282, and ADV7282-M
models, short-to-battery (STB) diagnostics can be carried out on
two input video signals.
The ADV728x is programmed via a two-wire, serial,
bidirectional port (I
2
C® compatible). The ADV728x supports a
number of functions including 8-bit to 6-bit down dither mode
and adaptive contrast enhancement (ACE).
The advanced interlaced-to-progressive (I2P) function allows
the ADV7280, ADV7280-M, ADV7282, ADV7282-M, and
ADV7283 to convert an interlaced video input into a
progressive video output. This function is performed without
the need for external memory. Edge adaptive technology is used
to minimize video defects on low angle lines.
The ADV728x is fabricated in a 1.8 V CMOS process. Its
monolithic CMOS construction ensures greater functionality
with lower power dissipation. The ADV728x are available in
−40°C to +85°C temperature range models. This makes the
ADV728x ideal for automotive applications.
See Table 6 for a descriptive list of these video decoder models.
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