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Analog Devices |
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–SPECIFICATIONS1 (VAA = 4.75 V to 5.25 V, VDD = 3.2 V to 3.5 V, VDDIO = 3.15 V to 3.5 V, TMIN to TMAX2,
unless otherwise noted.)
Parameter
Min Typ Max
Unit
Test Conditions
STATIC PERFORMANCE
Resolution (each ADC)
Accuracy (each ADC)
Integral Nonlinearity3
Differential Nonlinearity3
12
± 0.5 ± 1.0
± 0.175 ± 0.325
Bits
LSB
LSB
12-Bit Range
BSL, 2 V Input Captured in a 10-Bit
Range
2 V Input Captured in a 10-Bit Range
DIGITAL INPUTS3
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IIN
Input Capacitance, CIN
DIGITAL OUTPUTS3
Output High Voltage, VOH
Output Low Voltage, VOL
High Impedance Leakage Current
Output Capacitance
2
–10
2.4
V
0.8 V
+10 µA
10 pF
V
0.4 V
10 µA
30 pF
VIN = 0.4 V or 2.4 V
ISOURCE = 3.2 mA
ISINK = 0.4 mA
VOLTAGE REFERENCE3
Reference Range, VREFOUT
POWER REQUIREMENTS
Digital Power Supply, VDD
Digital IO Power Supply, VDDIO
Analog Power Supply, VAA
Digital Supply Current, IDD
Digital IO Supply Current, IDDIO
Analog Supply Current, IAA4
Power-Up Time
2.15 2.2 2.25
3.2 3.3
3.15 3.3
4.75 5.0
125
7
150
1
3.5
3.5
5.25
165
180
V
V
V
V
mA
mA
mA
Field
IVREFOUT = 0 µA
Sleep Mode until Powered Up
NOTES
1The max/min specifications are guaranteed over this range. The max/min values are typical over VAA = 4.75 V to 5.25 V, VDD = 3.2 V to 3.5 V, and VDDIO = 3.15 V to
3.5 V range.
2Temperature Range TMIN to TMAX = 0°C to 70°C
3Guaranteed by characterization.
4IAA is total analog current taken by AVDD supply pins.
Specifications subject to change without notice.
–2– REV. 0
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