adv7322 Analog Devices, Inc., adv7322 Datasheet - Page 64

• Manufacturer Part Number: adv7322
• Description: Multiformat 11-bit Hdtv Video Encoder
• Manufacturer: Analog Devices, Inc.

ADV7322
For optimum performance, the analog outputs should each be
source and load terminated, as shown in Figure 90. The
termination resistors should be as close as possible to the
ADV7322 to minimize reflections.
4.7PF
4.7k:
SHOULD BE
GROUNDED
UNUSED
INPUTS
V
AA
+
V
AA
680:
5k:
820pF
V
DD_IO
3.9nF
0.1PF
19
50
49
48
63
23
24
25
33
32
34
GND_ IO
COMP1, 2
V
S_HSYNC
S_VSYNC
S_BLANK
P_HSYNC
P_VSYNC
P_BLANK
RESET
I
S0–S7
C0–C7
Y0–Y7
CLKIN_B
CLKIN_A
EXT_LF
2
45
AA
C
64
V
36
AA
ADV7322
0.1PF
AGND
V
41
AA
40
POWER SUPPLY DECOUPLING
FOR EACH POWER SUPPLY GROUP
V
DGND
DD
Figure 90. ADV7322 Circuit Layout
10, 56
11, 57
DAC A
DAC B
DAC C
DAC D
V
DAC E
DAC F
R
R
SCLK
ALSB
DD_IO
V
Rev. PrA | Page 64 of 88
SDA
SET2
SET1
1
REF 46
44
43
42
39
38
37
22
21
20
35
47
10nF
10nF
10nF
300:
300:
300:
300:
300:
300:
For optimum performance, it is recommended that all
decoupling and external components relating to the ADV7322
be located on the same side of the PCB and as close as possible
to the ADV7322. Any unused inputs should be tied to ground.
3040:
3040:
100:
100:
+
1PF
0.1PF
0.1PF
V
DD_IO
5k:
100nF
V
V
V
V
DD_IO
AA
DD
DD_IO
V
DD_IO
5k:
SELECTION HERE
DETERMINES
DEVICE ADDRESS
5k:
1.1k:
Preliminary Technical Data
I
V
2
C BUS
AA
RECOMMENDED EXTERNAL
AD1580 FOR OPTIMUM
PERFORMANCE