ad55-035z-0reel Analog Devices, Inc., ad55-035z-0reel Datasheet - Page 12

• Manufacturer Part Number: ad55-035z-0reel
• Description: Cmos, 330 Mhz Triple 8-bit High Speed Video Dac
• Manufacturer: Analog Devices, Inc.

ADV7125
Analog Signal Interconnect
The ADV7125 should be located as close as possible to the
output connectors, thus minimizing noise pickup and reflections
due to impedance mismatch.
The video output signals should overlay the ground plane and
not the analog power plane, thereby maximizing the high fre-
quency power supply rejection.
INPUTS
VIDEO
DATA
5V (V
1.45
1.40
1.35
AA
0.15
0.05
)
41–48
16–23
3–10
0.1 F
ROTATED 90 CCW
SEATING
PLANE
VIEW A
R7–R0
G7–G0
B7–B0
CLOCK
COMP
SYNC
BLANK
PSAVE
ADV7125
GND
Figure 7. Typical Connection Diagram
0.08 MAX
COPLANARITY
48-Lead Plastic Quad Flatpack [LQFP]
1, 2, 14, 15,
25, 26, 39, 40
V
R
0.20
0.09
IOG
IOG
IOR
IOB
IOR
IOB
REF
SET
V
3.5
AA
7
0
COMPLIANT TO JEDEC STANDARDS MS-026BBC
Dimensions shown in millimeters
OUTLINE DIMENSIONS
SEATING
13, 29,
30
PLANE
1.60 MAX
0.75
0.60
0.45
75
0.1 F
COMPLEMENTARY
OUTPUTS
1.4 mm Thick
R
530
ANALOG GROUND PLANE
POWER SUPPLY DECOUPLING (0.1 F AND 0.01 F
CAPACITOR FOR EACH V
SET
(ST-48)
75
0.1 F
–12–
INDICATOR
75
5V (V
For optimum performance, the analog outputs should each have
a source termination resistance to ground of 75 Ω (doubly termi-
nated 75 Ω configuration). This termination resistance should
be as close as possible to the ADV7125 to minimize reflections.
Additional information on PCB design is available in an application
note entitled Design and Layout of a Video Graphics System for
Reduced EMI. This application note is available from Analog
Devices, publication no. E1309–15–10/89 (www.analog.com/
library/applicationNotes/designTech/AN333.pdf).
PIN 1
VIEW A
COAXIAL CABLE
0.01 F
AA
)
75
CONNECTORS
BSC
0.50
12
1
AA
48
13
BNC
GROUP)
V
AA
(PINS DOWN)
TOP VIEW
10 F
9.00 BSC
75
75
75
(FERRITE BEAD)
L1
MONITOR
24
37
(CRT)
0.27
0.22
0.17
36
25
7.00
BSC
V
CC
33 F
REV. 0