19-3669; Rev 3; 8/07
RGBHV Driver with EMI Suppression
General Description
The MAX9511 provides a complete VGA interface
between a graphics controller and/or docking station.
The MAX9511 has output drivers with variable electro-
magnetic interference (EMI) suppression for graphics
video and sync (RGBHV) signals and includes external
load-detection circuitry.
The MAX9511 suppresses EMI emissions by limiting
the slew rate (SR) rather than limiting bandwidth with
fixed L-C filters. The SR controls the large-signal band-
width without affecting the small-signal bandwidth,
resulting in sharper video images, while reducing EMI.
The SR of the MAX9511 provides tighter control than
traditional passive L-C components, and allows the SR
to track the resolution by varying an external resistor
(R
RX
) rather than being fixed to a sub-optimal value.
The load-detection circuitry of the MAX9511 automatically
detects and transmits a change in load status to the input
stages when an external load (monitor, docking station, or
projector) is connected. The MAX9511 is compatible with
the load-detection circuitry on the digital-to-analog (DAC)
outputs of most video graphics controllers. The output
drivers provide 6dB of gain to compensate for the 75Ω
back-termination resistors, which reduce transmission line
reflections.
The RGBHV channels can be placed into shutdown to
reduce power when no external load is connected.
The MAX9511 operates from 3V and 5V supplies. The
DDC circuitry performs bidirectional level translation
from 3V to 5V logic levels. The MAX9511 is offered in a
24-pin QSOP package and is specified over the com-
mercial 0°C to +70°C temperature range.
Features
♦
RGB Drivers with Adjustable Slew Rate for EMI
Control
♦
H Sync and V Sync Drivers with Level Translation
♦
Bidirectional Level Translators for DDC Support
♦
Simultaneously Drives External Monitor/Projector
and Docking Station without Analog RGB
Switches—No Stub Reflections
♦
Eliminates Up to 34 External Components
♦
Small 24-Pin QSOP Package
MAX9511
Ordering Information
PART
MAX9511CEG
MAX9511CEG+
TEMP RANGE
0°C to +70°C
0°C to +70°C
PIN-
PACKAGE
24 QSOP
24 QSOP
PKG
CODE
E24-2
E24-2
+
Denotes a lead-free package.
Simplified Block Diagram
MAX9511
EMI SUPPRESSION
RED_IN
RED_OUT
GREEN_IN
GREEN_OUT
Applications
Notebook PCs (Laptops)
Docking Stations
Graphics Cards for Notebooks and Personal
Computers
Personal Computer Motherboards with On-Board
Video Graphics Controllers
Workstations
BLUE_IN
BLUE_OUT
LOAD-DETECT CIRCUITRY
DDC_DATA_IN
DDC_DATA_OUT
DDC_CLK_IN
DDC_CLK_OUT
H_SYNC_IN
H_SYNC_OUT
Pin Configuration appears at end of data sheet.
V_SYNC_IN
V_SYNC_OUT
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
RGBHV Driver with EMI Suppression
MAX9511
ABSOLUTE MAXIMUM RATINGS
V
CC
to AGND............................................................-0.3V to +6V
V
DD1
, V
DD2
to DGND ...............................................-0.3V to +6V
DGND to AGND.....................................................-0.1V to +0.1V
RED_IN, GREEN_IN, BLUE_IN to AGND.....-0.3V to (V
CC
+ 0.3V)
RED_OUT, GREEN_OUT, BLUE_OUT
to AGND ................................................-0.3V to (V
CC
+ 0.3V)
RX to AGND................................................-0.3V to (V
CC
+ 0.3V)
H_SYNC_IN, V_SYNC_IN,
SHDN
to DGND ..............................................-0.3V to (V
DD2
+ 0.3V)
H_SYNC_OUT, V_SYNC_OUT
to DGND ..............................................-0.3V to (V
DD1
+ 0.3V)
DDC_DATA_IN
to DGND..............(DDC_DATA_OUT - 0.3V) to (V
DD2
+ 0.3V)
DDC_DATA_OUT
to DGND .................(DDC_DATA_IN - 0.1V) to (V
DD1
+ 0.3V)
DDC_CLK_IN
to DGND ................(DDC_CLK_OUT - 0.3V) to (V
DD2
+ 0.3V)
DDC_CLK_OUT
to DGND....................(DDC_CLK_IN - 0.1V) to (V
DD1
+ 0.3V)
DDC_DATA_OUT to DDC_DATA_IN ........................-0.1V to +6V
DDC_CLK_OUT to DDC_CLK_IN.............................-0.1V to +6V
Continuous Power Dissipation (T
A
= +70°C)
24-Pin QSOP (derate 9.5mW/°C above +70°C)..........762mW
Operating Temperature Range...............................0°C to +70°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
CC
= 5V, V
DD1
= 5V, V
DD2
=
SHDN
= 3V, R
L
= 150Ω to AGND, DGND = AGND, R
RX
= 7kΩ to AGND, T
A
= 0°C to +70°C. Typical
values are at T
A
= +25°C.)
PARAMETER
Supply Voltage Range
SYMBOL
V
CC
V
DD1
V
DD2
I
CC
Quiescent Supply Current
I
DD1
I
DD2
VIDEO
Input Voltage Range
Output Black Level Voltage
Voltage Gain
Gain Matching
Input Resistance
Output Impedance
Output Short-Circuit Current
(To AGND)
Load-Detection Voltage
Output Load Detection
Power-Supply Rejection
Large-Signal Bandwidth
V
IN
A
V
∆A
V
R
IN
Z
OUT
I
OUT
V
X_IN
R
L_OUT
PSRR
(Note 1)
V
IN
= 0.4V
4.5V
≤
V
CC
≤
5.5V, V
IN
= 0.5V
V
OUT
= 1.6V
P-P
, R
RX
= 7kΩ
180
40
57
370
Inferred from voltage gain
0
≤
V
IN
≤
0.9V, R
L
= 75Ω
0
≤
V
IN
≤
0.9V, R
L
= 75Ω
0
≤
V
IN
≤
1V, with load
0.4V
≤
V
IN
≤
0.7V, no load
f = 100kHz
10
-85
0
5
+1.9
0.7
65
+2
1
100
-74
0.64
40
0.2
-62
0.9
160
+2.1
2
V
mV
V/V
%
kΩ
Ω
Ω
mA
V
Ω
dB
MHz
V
OUT,BLACK
RED_IN = GREEN_IN = BLUE_IN = AGND
CONDITIONS
Inferred from PSRR
Inferred from logic test
Inferred from logic test
SHDN
= V
DD2
SHDN
= DGND
SHDN
= V
DD2
SHDN
= DGND
SHDN
= V
DD2
SHDN
= DGND
R
RX
= 7kΩ
R
RX
= 36kΩ
MIN
4.5
4.5
2.3
38
25
0.15
3
0.027
220
26
TYP
MAX
5.5
5.5
3.6
50
35
0.25
6
0.08
500
40
µA
mA
V
UNITS
2
_______________________________________________________________________________________
RGBHV Driver with EMI Suppression
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 5V, V
DD1
= 5V, V
DD2
=
SHDN
= 3V, R
L
= 150Ω to AGND, DGND = AGND, R
RX
= 7kΩ to AGND, T
A
= 0°C to +70°C. Typical
values are at T
A
= +25°C.)
PARAMETER
Slew Rate (Notes 2, 3)
Settling Time
Undershoot/Overshoot
Linearity Error
Peak Signal-to-Noise Ratio
Channel-to-Channel Skew
Power-Supply Rejection
Ratio
Crosstalk
Input Termination Switch
Delay
LOGIC
Input Low Level
Input High Level
V
IL
V
IH
H_SYNC_IN, V_SYNC_IN and
SHDN
H_SYNC_IN, V_SYNC_IN and
SHDN
I
OL
= 4mA
H_SYNC_OUT, V
H_SYNC_IN
= DGND
0.7 x
V
DD2
0.55
0.3 x
V
DD2
V
V
∆t
SWD
SYMBOL
SR
t
S
t
OS
, t
US
LE
SNR
∆t
PSRR
V
IN
= 700mV
P-P
(Notes 6, 7)
f = 100kHz to 100MHz, V
IN
= 700mV
P-P
R to G to B (Note 3)
f = 100kHz
All hostile, f = 10MHz
CONDITIONS
R
RX
= 36kΩ, T
A
= +25°C
R
RX
= 7kΩ, T
A
= +25°C
(Notes 4, 5)
MIN
250
900
TYP
330
1100
0
±1
0.036
50
500
49
55
70
1100
MAX
450
1300
UNITS
V/µs
ns
%
%
dB
ps
dB
dB
ns
MAX9511
Output Low Level
V
OL
V_SYNC_OUT, V
V_SYNC_IN
= DGND
DDC_DATA_IN, V
DDC_DATA_OUT
=
I
OL
= 50µA DGND
DDC_CLK_IN, V
DDC_CLK_OUT
= DGND
I
OL
= 3mA
DDC_DATA_OUT, V
DDC_DATA_IN
=
DGND
DDC_CLK_OUT, V
DDC_CLK_IN
= DGND
H_SYNC_OUT, V
H_SYNC_IN
= V
DD2
V_SYNC_OUT, V
V_SYNC_IN
= V
DD2
DDC_DATA_IN, V
DDC_DATA_OUT
= V
DD1
DDC_CLK_IN, V
DDC_CLK_OUT
= V
DD1
DDC_DATA_OUT, V
DDC_DATA_IN
=
V
DD2
DDC_CLK_OUT, V
DDC_CLK_IN
= V
DD2
V
DD1
- 1.5
V
DD2
- 0.4
V
DD1
- 1.5
35
225
30
DDC_DATA_OUT, DDC_CLK_OUT
DDC_DATA_IN, DDC_CLK_IN
2
3.0
55
330
47
3
4.7
0.4
V
0.5
I
OH
= 4mA
I
OH
=
50µA
I
OH
=
50µA
SYNC Output Resistance
SHDN
Pulldown Resistance
SYNC Input Resistance
DDC Pullup Resistance
R
SO
R
SD
R
SI
R
PO
R
PI
Output High Level
V
OH
V
85
500
70
4
6.5
Ω
kΩ
kΩ
kΩ
_______________________________________________________________________________________
3
RGBHV Driver with EMI Suppression
MAX9511
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 5V, V
DD1
= 5V, V
DD2
=
SHDN
= 3V, R
L
= 150Ω to AGND, DGND = AGND, R
RX
= 7kΩ to AGND, T
A
= 0°C to +70°C. Typical
values are at T
A
= +25°C.)
PARAMETER
Rise/Fall Time
Propagation Delay
Enable Time
Disable Time
SYMBOL
t
R
/t
F
t
PLH
, t
PHL
All SYNC outputs
(Notes 2, 3)
DDC only, C
L
= 47pF
SYNC, C
SYNC
= 47pF, T
A
= +25°C (Notes 3, 8)
V
IN
= 0.7V
P-P
,
SHDN
from DGND to V
DD2
, outputs
settle to
±1%
of final value
V
IN
= 0.7V
P-P
,
SHDN
from V
DD2
to DGND, outputs
settle to
±1%
of final value
CONDITIONS
C
SYNC
= 47pF, T
A
= +25°C
C
SYNC
= 470pF, T
A
= +25°C
50
MIN
TYP
7
70
400
12
1200
400
22
ns
ns
ns
100
ns
MAX
UNITS
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
This is the voltage at which the input termination switches; V
IN
> V
X_IN
= switch open, V
IN
< V
X_IN
= switch closed.
Measured between the 10% to 90% points on rising or falling edge.
Not production tested. Guaranteed by design.
Measured from the END of overshoot/undershoot to ±5% of final value.
V
IN
= 700mV with a rise time >1ns.
Linearity error is the maximum difference between the actual and measured output of a video ramp. Done in accordance
with VESA Test Procedure, Version 1, 6/11/2001.
Note 7:
Linearity error measured as percentage of full scale.
Note 8:
Propagation delay is the time difference between the V
DD2
/ 2 input crossing and the 1.4V output crossing.
Typical Operating Characteristics
(V
CC
= 5V, V
DD1
= 5V, V
DD2
= 3V, R
L
= 150Ω to AGND, R
RX
= 7kΩ to AGND, T
A
= +25°C, unless otherwise noted.)
LARGE-SIGNAL BANDWIDTH
vs. FREQUENCY
MAX9511 toc01
LARGE-SIGNAL GAIN FLATNESS
vs. FREQUENCY
MAX9511 toc02
LARGE-SIGNAL BANDWIDTH
vs. FREQUENCY vs. R
RX
2
1
0
GAIN (dB)
-1
-2
-3
-4
-5
-6
-7
R
RX
= 20kΩ
R
RX
= 35kΩ
R
RX
= 50kΩ
0.1
1
10
FREQUENCY (MHz)
100
1000
R
RX
= 5kΩ
MAX9511 toc03
3
2
1
0
GAIN (dB)
V
OUT
= 1.6V
P-P
T
A
= T
MIN
to T
MAX
0.5
0.4
0.3
0.2
GAIN (dB)
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
3
-1
-2
-3
-4
-5
-6
-7
0.1
1
10
FREQUENCY (MHz)
100
1000
0.1
1
10
FREQUENCY (MHz)
100
1000
4
_______________________________________________________________________________________
RGBHV Driver with EMI Suppression
Typical Operating Characteristics (continued)
(V
CC
= 5V, V
DD1
= 5V, V
DD2
= 3V, R
L
= 150Ω to AGND, R
RX
= 7kΩ to AGND, T
A
= +25°C, unless otherwise noted.)
MAX9511
SMALL-SIGNAL BANDWIDTH
vs. FREQUENCY vs. R
RX
MAX9511 toc04
LARGE-SIGNAL GAIN FLATNESS
vs. FREQUENCY vs. R
RX
0.4
0.3
0.2
GAIN (dB)
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
R
RX
= 35kΩ
R
RX
= 50kΩ
R
RX
= 5kΩ
R
RX
= 20kΩ
MAX9511 toc05
3
2
1
0
GAIN (dB)
-1
-2
-3
-4
-5
-6
-7
0.1
1
10
100
1000
R
RX
= 5kΩ
R
RX
= 20kΩ
R
RX
= 35kΩ
R
RX
= 50kΩ
0.5
10,000
0.1
1
10
FREQUENCY (MHz)
100
1000
FREQUENCY (MHz)
ALL-HOSTILE CROSSTALK
vs. FREQUENCY
-10
-20
CROSSTALK (dB)
-30
-40
-50
-60
-70
-80
-90
-100
0.1
1
10
FREQUENCY (MHz)
100
1000
-120
0.1
T
A
= +85°C
T
A
= 0°C, +25°C
MAX9511 toc06
OFF-ISOLATION vs. FREQUENCY
MAX9511 toc07
0
0
-20
OFF-ISOLATION (dB)
-40
-60
-80
-100
1
10
FREQUENCY (MHz)
100
1000
TRANSIENT RESPONSE
MAX9511 toc08
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9511 toc09
0
-10
V
IN
500mV/div
0V
-20
PSRR (dB)
-30
-40
-50
-60
-70
T
A
= 0°C
T
A
= +25°C
T
A
= +70°C
V
OUT
1V/div
OV
2ns/div
0.01
0.1
1
10
100
1000
FREQUENCY (MHz)
_______________________________________________________________________________________
5
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