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ADV7185 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADV7185
Beschreibung Professional NTSC/PAL Video Decoder with 10-Bit CCIR656 Output
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 30 Seiten
ADV7185 Datasheet, Funktion
a
Professional NTSC/PAL Video Decoder
with 10-Bit CCIR656 Output
ADV7185
FEATURES
Analog Video to Digital YCrCb Video Decoder:
NTSC-(M/N), PAL-(B/D/G/H/I/M/N)
ADV®7185 Integrates Two 12-Bit ADCs
Clocked from a Single 27 MHz Crystal
Dual Video Clocking Schemes:
Line-Locked Clock Compatible (LLC)
Adaptive Digital Line Length Tracking (ADLLT™)
3-Line Chroma Comb Filter
Real-Time Clock and Status Information Output
Integrated AGC (Automatic Gain Control) and Clamping
Multiple Programmable Analog Input Formats:
CVBS (Composite Video)
SVHS (Y/C)
YCrCb Component (VESA, MII, SMPTE, and BetaCam)
6 Analog Input Video Channels
Real-Time Horizontal and Vertical Scaling
Automatic NTSC/PAL Identification
Differential Mode Video Input
Digital Output Formats (20-Bit Wide Bus):
YCrCb (4:2:2 or 4:1:1)
CCIR601/CCIR656 8-Bit or Extended 10-Bit
0.5 V to 2.0 V p-p Input Range
Differential Gain, 0.4% Typ
Differential Phase, 0.6o Typ
Programmable Video Controls:
Peak White/Hue/Brightness/Saturation/Contrast
CCIR/Square/4 FSC Pixel Operation
APPLICATIONS
Projectors
Digital TVs
DVD-RAM Recorders and Players
PDP Displays
Video Decoders
Hybrid Analog/Digital Set-Top Boxes
Professional Equipment
(continued on page 9)
FUNCTIONAL BLOCK DIAGRAM
P19–P0
PIXEL
O/P PORT
ADV7185
ISO
REFOUT
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
ANALOG I/P
MULTIPLEXING
AUTOMATIC
GAIN
CONTROL
(AGC )
CLAMP AND
DC RESTORE
SHAPING
AND
NOTCH LPF
12-BIT
ADC
LUMA
ANTIALIAS
LPF
27MHz
12-BIT
ADC
SWITCH
VIDEO TIMING AND
CONTROL BLOCK
PEAKING
HPF/LPF
RESAMPLING
AND
HORIZONTAL
SCALING
LUMA
DELAY
BLOCK
SYNC
DETECTION
2H LINE
MEMORY
SUB-
CARRIER
RECOVERY
DTO
RESAMPLING
AND
HORIZONTAL
SCALING
CHROMA
COMB
FILTER
CHROMA
ANTIALIAS
LPF
SHAPING
LPF
27MHz XTAL
OSCILLATOR
BLOCK
I2C-COMPATIBLE
INTERFACE PORT
FIFO CONTROL
BLOCK
AND
PIXEL
OUTPUT
FORMATTER
LLC
SYNTHESIS
WITH LINE-
LOCKED
OUTPUT
CLOCK
AFF
HFF/QCLK
AEF
DV
RD
OE
GL/CLKIN
LLC1
LLC2
LLCREF
ELPF
PWRDN
HSYNC FIELD VSYNC HREF VREF
CLOCK CLOCK RESET SDATA SCLOCK ALSB
ADLLT is a trademark and ADV is a registered trademark of Analog Devices, Inc.
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2002






ADV7185 Datasheet, Funktion
ADV7185
ABSOLUTE MAXIMUM RATINGS1
VAA to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 V
VDDIO to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 V
Voltage on Digital Input Pins . . GND – 0.5 V to VAA + 0.5 V
Storage Temperature (TS) . . . . . . . . . . . . . . –65°C to +150°C
Junction Temperature (TJ) . . . . . . . . . . . . . . . . . . . . . . 150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . 260°C
Analog Outputs to GND2 . . . . . . . . . . . . GND – 0.5 V to VAA
NOTES
1Stresses above those listed under Absolute Maximum Ratings may cause
permanent damage to the device. This is a stress rating only; functional operation
of the device at these or any other conditions above those listed in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
2Analog output short circuit to any power supply or common can be of an
indefinite duration.
Model
ADV7185KST
ORDERING GUIDE
Temperature Range
0°C to 70°C
Package
80-LQFP
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although the
ADV7185 features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended
to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
PIN CONFIGURATION
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
VS/ACTIVE 1
HS/ACTIVE 2
DVSSIO 3
DVDDIO 4
P15 5
P14 6
P13 7
P12 8
DVSS2 9
DVDD2 10
AFF 11
HFF/QCLK/GL 12
AEF 13
DVSSIO 14
DVDDIO 15
CLKIN 16
P11 17
P10 18
P9 19
P8 20
PIN 1
IDENTIFIER
ADV7185
TOP VIEW
(Not to Scale)
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
60 AIN5
59 AVSS5
58 AIN4
57 AVSS4
56 AVSS
55 CAPC2
54 CAPC1
53 AVSS
52 CML
51 REFOUT
50 AVDD
49 CAPY2
48 CAPY1
47 AVSS
46 AIN3
45 AVSS3
44 AIN2
43 AVSS2
42 AIN1
41 AVSS1
–6– REV. 0

6 Page









ADV7185 pdf, datenblatt
ADV7185
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
NTSC WN1
NTSC WN2
NTSC WN3
NTSC NN1
NTSC NN2
NTSC NN3
–1.0
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
FREQUENCY – MHz
Figure 11. Luminance NTSC Narrow/Wide Notch
Shaping Filter (Close-Up)
0
PAL NN1
PAL NN2
–10 PAL NN3
PAL W1
PAL W2
–20
PAL NN1
–30
PAL NN3
PAL W1
PAL W2
PAL NN2
–40
–50
–60
01 23 45 67 8
FREQUENCY – MHz
Figure 12. Luminance PAL Narrow/Wide Notch
Shaping Filter Responses
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
PAL NN1
PAL NN2
PAL NN3
PAL WN1
PAL WN2
–1.0 0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
FREQUENCY – MHz
Figure 13. Luminance PAL Narrow/Wide Notch
Shaping Filter Responses (Close-Up)
10 PS1
8
6 PS2
4
PS3
2
0 PS4
–2
PS5
–4
–6
PS6
–8
0 1 2 3 4 56 7
FREQUENCY – MHz
Figure 14. Luminance Peaking Filter Responses in
S-Video (SVHS17 Selected)
6
4 PC1
2
PC2
0 PC3
PC4
–2 PC5
PC6
–4
–6
–8
–10 0 1 2 3 4 5 6 7
FREQUENCY – MHz
Figure 15. Luminance Peaking Filter Responses in
CVBS (PAL NN3 Selected)
6
PC1
4
2
PC2
0 PC3
PC4
–2 PC5
PC6
–4
–6
–8 0 1 2 3 4 5 6
FREQUENCY – MHz
Figure 16. Luminance Peaking Filter Responses in
CVBS (NTSC NN3 Selected)
–12–
REV. 0

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