MAXIM MAX9539EUI

19-0602; Rev 2; 1/07
KIT
ATION
EVALU
E
L
B
A
IL
AVA
Graphics Video Sync Adder/Extractor
The MAX9539/MAX9540 chipset provides a 3-wire
(RGB) interface for 5-wire (RGBHV) video by adding
and extracting the H, V, and composite sync from the
graphics video signals. This chipset eliminates the
problem of sync-to-video timing (skew errors) in a 5wire interface, while reducing the number of channels
required to transport video signals.
Features
♦ 3-Wire RBG to 5-Wire RBGHV Interface
♦ Supports VGA-to-UXGA Resolution
♦ Low Offset Voltage (±1mV)
♦ 180MHz Large-Signal Bandwidth
The MAX9539 mixes the H and V sync signals and
adds them to create a 3-wire interface from a 5-wire
(RGBHV) input. The MAX9540 recovers the H and V
sync signals to create a 5-wire (RGBHV) interface from
the 3-wire input. The MAX9540 also provides a composite sync output.
The chipset includes the MAX9539 sync adder and the
MAX9540 sync extractor with 180MHz large-signal
bandwidths to address display resolutions up to 1600 x
1200 at 85Hz for VGA-to-UXGA applications. Both
devices feature a DC restore function, which virtually
eliminates any changes in black level. The chipset uses
a proprietary H and V sync addition/extraction scheme
(true sync) to minimize skew errors.
The MAX9539/MAX9540 are available in 28-pin TSSOP
packages and are specified over the extended -40°C to
+85°C temperature range.
Applications
Ordering Information
MAX9539EUI+*
PINPACKAGE
28 TSSOP
PKG
CODE
U28-3
MAX9539EUI
28 TSSOP
U28-3
Sync Adder
PART
DESCRIPTION
Sync Adder
MAX9540EUI+*
28 TSSOP
U28-3
Sync Extractor
MAX9540EUI
28 TSSOP
U28-3
Sync Extractor
Note: All devices are specified over the -40°C to +85°C operating temperature range.
+Denotes lead-free package.
*Future product—contact factory for availability.
Pin Configurations appear at end of data sheet.
Enterprise Class (Blade) Servers
Laptop PCs
Web Appliances
Keyboard-Video-Mouse (KVM)
Chipset Diagram
H
V
H
V
R
R
R
G
G
R
G
B
B
G
B
MAX9539
MAX9540
C
B
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
MAX9539/MAX9540
General Description
MAX9539/MAX9540
Graphics Video Sync Adder/Extractor
ABSOLUTE MAXIMUM RATINGS
VCC to GND ..............................................................-0.3V to +6V
VEE to GND...............................................................-6V to +0.3V
IN_R, IN_G, IN_B, REST_R, REST_G,
REST_B….....................................(VEE - 0.3V) to (VCC + 0.3V)
OUT_R, OUT_G, OUT_B Short Circuit
to GND (Note 1) .....................................................Continuous
OUT_R, OUT_G, OUT_B Short Circuit to
VCC .......................................................................................5s
MAX9539:
HSYNC, VSYNC, SP_H, SP_V ................ -0.3V to (VCC + 0.3V)
MAX9540:
HSYNC, CSYNC, VSYNC Short Circuit to GND .....Continuous
HSYNC, CSYNC, VSYNC Short Circuit to VCC .................1min
SP_C, SP_V, SP_H .................................-0.3V to (VCC + 0.3V)
Continuous Power Dissipation (TA = +70°C)
28-Pin TSSOP (U28-3) Single-Layer Board
(derate 13mW/°C above +70°C) ................................1039mW
28-Pin TSSOP (U28-3) Multilayer Board
(derate 14.3mW/°C above +70°C) ...............................1143mW
Operating Temperature .......................................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: Continuous power dissipation rating must also be observed.
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.
MAX9539 DC ELECTRICAL CHARACTERISTICS
(VCC = +5V, VEE = -5V, GND = 0V, RL = 150Ω to GND, TA = -40°C to +85°C, unless otherwise specified. Typical values are at TA =
+25°C.) (Notes 2 and 3)
PARAMETER
Supply Voltage Range
Quiescent Supply Current
Input Voltage Range
DC-Restore Input Voltage Range
DC-Restore Rejection Ratio
Input Bias Current
Input Resistance
Output Sync Amplitude
Output Offset Voltage
Temperature Coefficient of
Output Offset Voltage
Voltage Gain
Gain Matching
SYMBOL
CONDITIONS
MIN
2
MAX
Guaranteed by PSRR test
4.5
5.5
VEE
Guaranteed by PSRR test
-5.5
-4.5
ICC
RL = ∞
61
90
IEE
RL = ∞
55
75
VIN
Inferred from voltage gain test
∆VIN_RESTORE
DCRR
(∆VOS /
∆VIN_RESTORE)
Inferred from output DC-Restore
Rejection Ratio test
VIN_RESTORE = -0.3V to +0.3V
-0.30
+0.30
V
28
50
±2
400
VOS
TCVOS
(∆VOS / ∆TA)
G
∆G
PSRR
∆VOS /
∆(VCC - VEE)
mA
V
IB
H or V sync is active
V
1
RIN
VSYNC
UNITS
0
±30
µA
kΩ
-2.35
-2.05
V
±1
±8
mV
TA = -40oC to +85oC
-24
VIN = 0 to +1V
-2.65
dB
∆VIN_RESTORE_ = 0V, TA = +25oC
(Note 4)
+1.95
R to G to B
Gain Linearity
Power-Supply Rejection Ratio
TYP
VCC
VCC, VEE = ±4.5V to ±5.5V
50
µV/°C
+2
+2.05
V/V
±1
±2
%
0.02
%
70
dB
_______________________________________________________________________________________
Graphics Video Sync Adder/Extractor
(VCC = +5V, VEE = -5V, GND = 0V, RL = 150Ω to GND, TA = -40°C to +85°C, unless otherwise specified. Typical values are at TA =
+25°C.) (Notes 2 and 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
0.8
V
HSYNC, VSYNC INPUTS
High Input Voltage
VIH
Low Input Voltage
VIL
2
V
High Input Current
IIH
VI = 5V
10
Low Input Current
IIL
VI = 0V
2.5
60
µA
µA
SP_H, SP_V INPUTS
High Input Voltage
VIH
Low Input Voltage
VIL
2
High Input Current
IIH
VI = 5V
Low Input Current
IIL
VI = 0V
V
0.8
V
0.1
20
µA
1
20
µA
REST_R, REST_B, REST_G INPUTS
Hold-Mode Droop Current
IDROOP
±2
nA
MAX9539 AC ELECTRICAL CHARACTERISTICS
(VCC = +5V, VEE = -5V, GND = 0V, RL = 150Ω to GND, TA = -40°C to +85°C, unless otherwise specified. Typical values are at TA =
+25°C.)
PARAMETER
Large-Signal Bandwidth
Slew Rate
SYMBOL
LSBW
SR
Channel-to-Channel Crosstalk
XTALK
CONDITIONS
MIN
TYP
MAX
UNITS
VOUT = 2VP-P
180
MHz
VOUT = 2VP-P
900
V/µs
VOUT = 2VP-P at 10MHz
-60
dB
Settling Time
tS
VOUT = 2VP-P to 0.1%
15
ns
Input Voltage-Noise Density
en
f = 100kHz
30
nV/√Hz
Input Current-Noise Density
in
f = 100kHz
12
pA/√Hz
Sync Timing Delay
tD
H sync only (Note 5)
-20
ns
∆(tD)
H sync only (Note 5)
1
ns
Channel-to-Channel Sync Timing
Skew
Sync Edge Jitter
200
psP-P
Line Droop
tJITTER
f = 50kHz
0.01
%
Field Tilt
f = 60Hz
0.04
%
Sync Frequency Range
fH
H sync
15 to 150
kHz
fV
V sync
40 to 100
Hz
_______________________________________________________________________________________
3
MAX9539/MAX9540
MAX9539 DC ELECTRICAL CHARACTERISTICS (continued)
MAX9539/MAX9540
Graphics Video Sync Adder/Extractor
MAX9540 DC ELECTRICAL CHARACTERISTICS
(VCC = +5V, VEE = -5V, GND = 0V, RL = 150Ω to GND, TA = -40°C to +85°C, unless otherwise specified. Typical values are at TA =
+25°C.) (Notes 2 and 3)
PARAMETER
SYMBOL
Supply Voltage Range
Quiescent Supply Current
Input Voltage Range
DC-Restore Input Voltage Range
DC-Restore Rejection Ratio
MIN
Guaranteed by PSRR test
4.5
5.5
Guaranteed by PSRR test
-5.5
-4.5
ICC
RL = ∞
61
90
IEE
RL = ∞
54
75
VIN
Inferred from voltage gain test
∆VIN_RESTORE)
Inferred from DC-Restore Rejection
Ratio test
VIN_RESTORE = -0.3V to +0.3V
Output Offset Voltage
VOS
TCVOS
(∆VOS /∆TA)
Temperature Coefficient of
Output Offset Voltage
Voltage Gain
G
∆G
Gain Matching
PSRR
∆VOS /
∆(VCC - VEE)
mA
V
-0.30
+0.30
V
28
50
±2
dB
±30
µA
400
kΩ
H or V sync is active: VIN < -1V
±1
±16
mV
∆VIN_RESTORE_ = 0V, TA = +25oC
(Note 4)
±1
±8
mV
TA = -40oC to +85oC
−24
VIN = 0 to +1V
+1.95
R to G to B
Gain Linearity
Power-Supply Rejection Ratio
V
1
RIN
VBLACK
UNITS
0
IB
Output Black Level
MAX
VEE
DCRR
(∆VOS /
Input Resistance
TYP
VCC
∆VIN_RESTORE
Input Bias Current
CONDITIONS
VCC, VEE = ±4.5V to ±5.5V
50
µV/°C
+2
+2.05
±1
±2
V/V
%
0.02
%
70
dB
SP_H, SP_V, SP_C INPUTS
High Input Voltage
VIH
Low Input Voltage
VIL
2
V
High Input Current
IIH
VI = 5V
0.01
20
µA
Low Input Current
IIL
VI = 0V
1
20
µA
0.8
V
REST_R, REST_G, REST_B INPUTS
Hold-Mode Droop Current
IDROOP
±2
nA
HSYNC, VSYNC, CSYNC OUTPUTS
High Voltage Level
VOH
IOH (source) = +8mA
Low Voltage Level
VOL
IOL (sink) = -8mA
4
2.4
_______________________________________________________________________________________
V
0.5
V
Graphics Video Sync Adder/Extractor
(VCC = +5V, VEE = -5V, GND = 0V, RL = 150Ω to GND, TA = -40°C to +85°C, unless otherwise specified. Typical values are at TA =
+25°C.)
PARAMETER
SYMBOL
Large-Signal Bandwidth
MIN
TYP
MAX
UNITS
LSBW
VOUT = 2VP-P
180
MHz
SR
VOUT = 2VP-P
900
V/µs
VOUT = 2VP-P at 10MHz
-60
dB
Slew Rate
Channel-to-Channel Crosstalk
CONDITIONS
XTALK
Settling Time
tS
VOUT = 2VP-P to 0.1%
15
ns
Input Voltage-Noise Density
en
f = 100kHz
30
nV/√Hz
Input Current-Noise Density
in
f = 100kHz
12
pA/√Hz
Sync Timing Delay
tD
H sync only (Note 5)
-10
ns
Sync Timing Skew
∆(tD)
H sync only (Note 5)
1
ns
200
psP-P
%
Sync Edge Jitter
tJITTER
Line Droop
f = 50kHz
0.01
Field Tilt
f = 60Hz
0.04
%
Sync Frequency Range
Note 2:
Note 3:
Note 4:
Note 5:
fH
H sync
15 to 150
kHz
fV
V sync
40 to 100
Hz
All devices are 100% production tested at TA = +25°C. Specifications over temperature limits are guaranteed by design.
DC restore is not active. HSYNC and VSYNC are not applied. REST_R, REST_G, and REST_B are grounded.
DC restore is active. REST_R, REST_G, and REST_B are bypassed with 1nF to ground.
The sync timing error is measured as follows: The input signals are measured from the falling edge of H sync/V sync to the
start of active video, called t1. The output signal is then measured from the falling edge of H sync/V sync to the start of
active video, called t2. All measurements are at the 50% points as shown in Figure 1.
Typical Operating Characteristics
(TA = +25°C, VCC = +5V, VEE = -5V, GND = 0V, RL = 150Ω to GND, unless otherwise noted.)
1
-1
GAIN (dB)
GAIN (dB)
0
-2
0.2
0.1
0
0
-1
-0.1
GAIN (dB)
1
IN_ = 1VP-P
AV = +2V/V
2
0.3
MAX9539 toc02
IN_ = 1VP-P
AV = +2V/V
2
3
MAX9539 toc01
3
LARGE-SIGNAL GAIN FLATNESS
vs. FREQUENCY (MAX9539)
LARGE-SIGNAL FREQUENCY RESPONSE
(MAX9540)
-2
-0.2
-3
-0.3
-4
-4
-0.4
-5
-5
-0.5
-6
-6
-0.6
-7
-7
-0.7
-3
1
10
100
FREQUENCY (MHz)
1000
1
10
100
FREQUENCY (MHz)
1000
MAX9539 toc03
LARGE-SIGNAL FREQUENCY RESPONSE
(MAX9539)
1
10
100
1000
FREQUENCY (MHz)
_______________________________________________________________________________________
5
MAX9539/MAX9540
MAX9540 AC ELECTRICAL CHARACTERISTICS
Typical Operating Characteristics (continued)
(TA = +25°C, VCC = +5V, VEE = -5V, GND = 0V, RL = 150Ω to GND, unless otherwise noted.)
LARGE-SIGNAL GAIN FLATNESS
vs. FREQUENCY (MAX9540)
-10
-10
-20
-20
GAIN (dB)
-0.1
-0.2
-0.3
PSRR-
-30
GAIN (dB)
0
MAX9539 toc06
0.1
0
MAX9539 toc05
0
MAX9539 toc03
IN_ = 1VP-P
AV = +2V/ V
0.2
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (MAX9540)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (MAX9539)
0.3
GAIN (dB)
-40
PSRR-30
-40
PSRR+
PSRR+
-0.4
-50
-50
-60
-60
-0.5
-0.6
-70
-70
-0.7
1
10
0.1
1000
100
1
10
0.1
1000
100
1
64
62
SUPPLY CURRENT (mA)
ICC
60
58
56
IEE
52
MAX9539 toc08
64
54
100
SUPPLY CURRENT
vs. TEMPERATURE (MAX9540)
MAX9539 toc07
SUPPLY CURRENT
vs. TEMPERATURE (MAX9539)
62
10
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
SUPPLY CURRENT (mA)
MAX9539/MAX9540
Graphics Video Sync Adder/Extractor
ICC
60
58
56
54
IEE
52
50
50
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
-50
-25
0
25
50
75
100
TEMPERATURE (°C)
OUTPUT vs. INPUT
(MAX9540)
OUTPUT vs. INPUT
(MAX9539)
MAX9539 toc09
MAX9539 toc10
IN_R
1V/div
IN_R
1V/div
HSYNC
5V/div
OUT_R
1V/div
OUT_R
2V/div
HSYNC
5V/div
2µs/div
6
2µs/div
_______________________________________________________________________________________
1000
Graphics Video Sync Adder/Extractor
PIN
NAME
1
IN_R
Red Video Input
2, 7, 12
GND
Ground
3
REST_R
4, 9, 10, 14,
15, 20, 21,
22, 25
N.C.
No Connection. Not internally connected.
5
I.C.
Internally Connected. For best performance, connect this pin to GND.
6
IN_G
8
REST_G
11
IN_B
13
REST_B
16
VSYNC
17
SP_V
18
OUT_B
19
VEE
23
OUT_G
24
VCC
26
HSYNC
27
SP_H
28
OUT_R
FUNCTION
Red DC Restore. Connect a 1nF capacitor from REST_R to GND.
Green Video Input
Green DC Restore. Connect a 1nF capacitor from REST_G to GND.
Blue Video Input
Blue DC Restore. Connect a 1nF capacitor from REST_B to GND.
Vertical Sync Input
Vertical Sync Polarity Input
Blue Output with Vertical Sync
Negative Power-Supply Input. Bypass with a 0.1µF capacitor to GND.
Green Output with Composite Sync.
Positive Power-Supply Input. Bypass with a 0.1µF capacitor to GND.
Horizontal Sync Input
Horizontal Sync Polarity Input
Red Output with Horizontal Sync
_______________________________________________________________________________________
7
MAX9539/MAX9540
MAX9539 Pin Description
Graphics Video Sync Adder/Extractor
MAX9539/MAX9540
MAX9540 Pin Description
PIN
NAME
FUNCTION
1
IN_R
Red Video Input with Horizontal Sync
2, 7, 12
GND
Ground
3
REST_R
4, 9, 10, 14,
15, 20, 25
N.C.
No Connection. Not internally connected.
5
I.C.
Internally Connected. For best performance, connect this pin to GND.
6
IN_G
8
REST_G
11
IN_B
13
REST_B
16
VSYNC
17
SP_V
18
OUT_B
19
VEE
21
CSYNC
Red DC Restore. Connect a 1nF capacitor from REST_R to GND.
Green Video Input with Composite Sync
Green DC Restore. Connect a 1nF capacitor from REST_G to GND.
Blue Video Input with Vertical Sync
Blue DC Restore. Connect a 1nF capacitor from REST_B to GND.
Vertical Sync Output
Vertical Sync Polarity Input
Blue Video Output
Negative Power-Supply Input. Bypass with a 0.1µF capacitor to GND.
22
SP_C
23
OUT_G
24
VCC
26
HSYNC
27
SP_H
28
OUT_R
Composite Sync Output
Composite Sync Polarity Input
Green Video Output
Positive Power-Supply Input. Bypass with a 0.1µF capacitor to GND.
Horizontal Sync Output
Horizontal Sync Polarity Input
Red Video Output
Detailed Description
The MAX9539/MAX9540 chipset provides a 3-wire
(RGB) interface for 5-wire (RGBHV) video by adding
and extracting the H, V, and composite sync from the
graphics video signals. This chipset eliminates the
problem of sync-to-video timing (skew errors) in a 5wire interface, while reducing the number of channels
required when transporting video signals.
The MAX9539 mixes the H and V sync signals and
adds them to create a 3-wire interface from a 5-wire
(RGBHV) input. The MAX9540 recovers the H and V
sync signals to create a 5-wire (RGBHV) interface from
the 3-wire input. The MAX9540 also provides a composite sync output.
The chipset includes the MAX9539 sync adder and the
MAX9540 sync extractor with 180MHz large-signal
bandwidths to address display resolutions up to 1600 x
1200 at 85Hz for VGA-to-UXGA applications. Both
devices feature a DC-restore function, which virtually
eliminates any changes in black level. The chipset uses
a proprietary H and V sync addition/extraction scheme
(true sync) to minimize skew errors.
8
MAX9539 Sync Adder
The MAX9539 mixes the H and V sync signals and
adds them to create a 3-wire interface from a 5-wire
(RGBHV) input. Sync signals are added to the input
video signals. Horizontal sync is added to red video,
vertical sync is added to blue video, and composite
sync is added to green video. Composite sync is the
XOR function between H sync and V sync and is internally generated by the MAX9539. The sync level of the
video outputs is -2.4V. The DC-restore function
removes any DC offset (∆V IN_RESTORE) in the RGB
video inputs and sets the output black level to 0V at the
back porch of the H sync. Therefore, the output black
level is set to 0V at the beginning of every line.
Figure 2 illustrates the functionality of the MAX9539. In
this example, the sync signals are of positive polarity.
MAX9540 Sync Extractor
The MAX9540 recovers the H and V sync signals to create a 5-wire (RGBHV) interface from the 3-wire input. The
output video signals are obtained by removing the sync
pulses of the input video. The sync outputs correspond
to the sync pulses of the input video: horizontal sync is
_______________________________________________________________________________________
Graphics Video Sync Adder/Extractor
DC Restore
The MAX9539/MAX9540 DC-restore function removes
the input signal DC level and restores 0V for the black
level of the output video signal. 1nF restore capacitors
are needed for the sample-and-hold circuitry at
REST_R, REST_G, and REST_B. A value less than
0.5nF can cause AC instability in the sample-and-hold
circuitry. A value higher than 2nF increases the settling
time of the sample-and-hold circuitry, shifting the output black level from 0V.
MAX9539/MAX9540
obtained from the red input, vertical sync is obtained
from the blue input, and composite sync is obtained from
the green input. Like the MAX9539, the DC-restore function removes any DC offset in the RGB video inputs and
sets the output black levels to 0V. This happens at the
back porch (trailing edge) of the sync pulse.
Figure 3 illustrates the functionality of the MAX9540. In
this example, the sync signals are of positive polarity.
SYNC TIMING DELAY (tD) = t1 - t2
t1
VIDEO
SYNC
t2
VIDEO WITH SYNC
Sync Polarity
Sync polarity refers to the idle state and pulse amplitude of the sync pulse. A sync pulse that idles low and
pulses high is referred to as a positive sync pulse. A
sync pulse that idles high and pulses low is referred to
as a negative sync pulse as seen in Figure 4. To
accommodate positive and negative sync input signals,
the MAX9539/MAX9540 have vertical and horizontal
sync polarity inputs (SP_V and SP_H). Drive SP_V or
SP_H high for positive sync polarity. Drive SP_V or
SP_H low for negative sync polarity. The MAX9540 also
has a composite polarity input (SP_C). Drive SP_C high
for positive sync polarity or drive SP_C low for negative
sync polarity (Table 1).
Layout and Power-Supply Bypassing
The MAX9539/MAX9540 have an extremely high bandwidth and require careful board layout. For best performance use constant-impedance microstrip or stripline
techniques.
To realize the full AC performance of these high-speed
amplifiers, pay careful attention to power-supply
bypassing and board layout. The PC board should
have at least two layers: a signal and power layer on
one side, and a large, low-impedance ground plane on
the other side. The ground plane should be as free of
voids as possible. With multilayer boards, locate the
ground plane on a layer that incorporates no signal or
power traces.
Observe the following guidelines when designing the
board regardless of whether or not a constant-impedance board is used.
1) Do not use wire-wrap boards or breadboards.
Figure 1. Sync Timing Delay (tD) = t1 - t2
Table 1. Sync Polarity Table
INPUT LOGIC
VALUE
SP_V
SP_H
SP_C
(MAX9540)
1
Positive
sync
Positive
sync
Positive
sync
0
Negative
sync
Negative
sync
Negative
sync
2) Do not use IC sockets; they increase parasitic
capacitance and inductance.
3) Keep lines as short and as straight as possible. Do
not make 90° turns; round all corners.
4) Observe high-frequency bypassing techniques to
maintain the amplifier’s accuracy and stability.
5) Use surface-mount components. They generally
have shorter bodies and lower parasitic reactance,
yielding better high-frequency performance than
through-hole components.
_______________________________________________________________________________________
9
MAX9539/MAX9540
Graphics Video Sync Adder/Extractor
VIDEO INPUT
(IN_)
0.7V
0V
HOR. SYNC
(HSYNC)
5V
0V
VER. SYNC
(VSYNC)
5V
0V
RED OUTPUT
(OUT_R)
1.4V
0V
-2.4V
BLUE OUTPUT
(OUT_B)
1.4V
0V
-2.4V
GREEN OUTPUT
(OUT_G)
1.4V
0V
-2.4V
Figure 2. MAX9539 Input and Output Functionality
VIDEO WITH
SYNC
(IN_)
POSITIVE SYNC
0.7V
+5V
-2.4V
VIDEO OUTPUT
(OUT_R/B/G)
0V
1.4V
SYNC OUTPUT
(_SYNC)
NEGATIVE SYNC
0V
+5V
0V
0V
5V
Figure 3. MAX9540 Input and Output Functionality
Figure 4. Sync Pulse Polarity
The bypass capacitors should include a 0.1µF ceramic
surface-mount capacitor between each supply pin and
the ground plane, located as close to the package as
possible. Optionally, place a 10µF tantalum capacitor
at the power-supply pins’ points of entry to the PC
board to ensure the integrity of incoming supplies. The
power-supply trace should lead directly from the tanta-
lum capacitor to the VCC and VEE pins. To minimize
parasitic inductance, keep PC traces short and use
surface-mount components.
Use surface-mount resistors for input termination and
output back termination. Place the termination resistors
as close to the IC as possible.
10
______________________________________________________________________________________
Graphics Video Sync Adder/Extractor
+5V
* OPTIONAL BULK CAPACITANCE
10µF*
0.1µF
VCC
24
MAX9539
IN_R
1
x2
28
OUT_R
23
OUT_G
18
OUT_B
DC
RESTORE
REST_R
3
IN_G
6
1nF
x2
DC
RESTORE
REST_G
8
1nF
IN_B
11
x2
DC
RESTORE
REST_B
13
VSYNC
16
HSYNC
26
1nF
H/V SYNC
LOGIC
19
17
27
SP_V SP_H
2, 5, 7, 12
GND
VEE
10µF*
0.1µF
-5V
______________________________________________________________________________________
11
MAX9539/MAX9540
Functional Diagrams
Graphics Video Sync Adder/Extractor
MAX9539/MAX9540
Functional Diagrams (continued)
* OPTIONAL BULK CAPACITANCE
+5V
10µF*
0.1µF
VCC
24
MAX9540
IN_R 1
28 OUT_R
x2
DC
RESTORE
REST_R 3
1nF
IN_G 6
23 OUT_G
x2
DC
RESTORE
REST_G
8
1nF
IN_B 11
x2
18
OUT_B
16
VSYNC
21
CSYNC
HSYNC
DC
RESTORE
1nF
REST_B
13
SP_V
17
SP_C
22
SP_H
H/V/C SYNC
LOGIC
27
2, 5, 7, 12
26
19
GND
VEE
10µF*
0.1µF
-5V
12
______________________________________________________________________________________
Graphics Video Sync Adder/Extractor
BACKPLANE
BLADE 1
H
R
V
75Ω
75Ω
R
MAX9539
G
G
B
B
75Ω
PRIOR BLADE
MAX4027
+700mV
75Ω
75Ω
0V
-1.2V
BLADE 2
MAX4027
75Ω
H
V
75Ω
R
MAX9540
75Ω
G
B
75Ω
MANAGEMENT
MODULE
______________________________________________________________________________________
13
MAX9539/MAX9540
Typical Application Diagram
Graphics Video Sync Adder/Extractor
MAX9539/MAX9540
Pin Configurations
TOP VIEW
TOP VIEW
IN_R 1
28 OUT_R
GND 2
27 SP_H
REST_R 3
N.C. 4
26 HSYNC
MAX9539
I.C. 5
25 N.C.
24 VCC
IN_R 1
28 OUT_R
GND 2
27 SP_H
REST_R 3
N.C. 4
26 HSYNC
MAX9540
I.C. 5
25 N.C.
24 VCC
IN_G 6
23 OUT_G
IN_G 6
23 OUT_G
GND 7
22 N.C.
GND 7
22 SP_C
REST_G 8
21 N.C.
REST_G 8
N.C. 9
20 N.C.
N.C. 9
20 N.C.
N.C. 10
19 VEE
N.C. 10
19 VEE
IN_B 11
18 OUT_B
IN_B 11
18 OUT_B
GND 12
17 SP_V
GND 12
17 SP_V
REST_B 13
16 VSYNC
N.C. 14
15 N.C.
21 CSYNC
REST_B 13
16 VSYNC
N.C. 14
15 N.C.
TSSOP
TSSOP
Chip Information
PROCESS: Bipolar
14
______________________________________________________________________________________
Graphics Video Sync Adder/Extractor
TSSOP4.40mm.EPS
PACKAGE OUTLINE, TSSOP 4.40mm BODY
21-0066
I
1
1
Revision History
Pages changed at Rev 2: 1, 2, 4, 15
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15
© 2007 Maxim Integrated Products
Boblet
is a registered trademark of Maxim Integrated Products, Inc.
MAX9539/MAX9540
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)