MAX9511 Maxim Integrated Products, MAX9511 Datasheet - Page 11

• Manufacturer Part Number: MAX9511
• Description: Complete VGA Interface
• Manufacturer: Maxim Integrated Products

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Figure 4 showcases the setup for three commonly used
resolutions: 1600 x 1200, 1280 x 1024, and 1024 x 768.
Since the resolution change is relatively slow, the
switch does not have to be fast. The impedance of the
switch does not need to be low compared to R
When using a high-impedance switch, the resistance
Figure 4. Three Resolution Slew-Rate Control
MANAGEMENT
POWER-
CIRCUIT
______________________________________________________________________________________
37.5Ω
37.5Ω
37.5Ω
10
11
9
4
2
8
5
H_SYNC_IN
V_SYNC_IN
DDC_DATA_IN
DDC_CLK_IN
RED_IN
GREEN_IN
BLUE_IN
SHDN
7
3, 20, 22, 24
V
5V
DD1
13
AGND
0.1µF
MAX9511
Complete VGA Interface with
0.1µF
2.3V TO 3.6V
DDC_DATA_OUT
18
DDC_CLK_OUT
DGND
V
H_SYNC_OUT
V_SYNC_OUT
DD2
GREEN_OUT
BLUE_OUT
12
RX
RED_OUT
.
5V
V
CC
1
RX
0.22µF
4.7µF
1nF
17
16
15
14
19
23
21
6
from the switch should be included to calculate R
The MAX4731 50Ω SPST analog switch shown in the
figure is used with three external resistors to get R
values of 47kΩ, 23.5kΩ, and 10kΩ for 1600 x 1200,
1280 x 1024, and 1024 x 768 resolutions, respectively.
COM2
COM1
IN1
IN2
75Ω
75Ω
75Ω
75Ω
75Ω
75Ω
MAX4731
C
SYNC
C
LIMITING CAPACITORS
SYNC
SYNC BANDWIDTH
EMI Suppression
NO1
NO2
= 47pF TO 470pF
REMOTE MONITOR
R3 = 18kΩ
R2 = 47kΩ
C
SYNC
R1 = 47kΩ
DOCKING STATION
RX
RX
11
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