FMS6143CSX [ONSEMI]
三通道四阶标清视频滤波器驱动器;
| 型号： | FMS6143CSX |
| 厂家： | 
ONSEMI |
| 描述： | 三通道四阶标清视频滤波器驱动器 驱动 光电二极管 商用集成电路 驱动器 |
| 文件： | 总12页 (文件大小：618K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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www.onsemi.com
onsemi andꢀꢀꢀꢀꢀꢀꢀand other names, marks, and brands are registered and/or common law trademarks of Semiconductor Components Industries, LLC dba “onsemi” or its affiliates and/or
subsidiaries in the United States and/or other countries. onsemi owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of onsemi
product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent-Marking.pdf. onsemi reserves the right to make changes at any time to any products or information herein, without
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or suitability of its products for any particular purpose, nor does onsemi assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all
liability, including without limitation special, consequential or incidental damages. Buyer is responsible for its products and applications using onsemi products, including compliance with all laws,
regulations and safety requirements or standards, regardless of any support or applications information provided by onsemi. “Typical” parameters which may be provided in onsemi data sheets and/
or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application
by customer’s technical experts. onsemi does not convey any license under any of its intellectual property rights nor the rights of others. onsemi products are not designed, intended, or authorized
for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification in a foreign jurisdiction or any devices intended for
implantation in the human body. Should Buyer purchase or use onsemi products for any such unintended or unauthorized application, Buyer shall indemnify and holdonsemi and its officers, employees,
subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that onsemi was negligent regarding the design or manufacture of the part. onsemi is an Equal Opportunity/Affirmative
Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner. Other names and brands may be claimed as the property of others.
FMS6143
Low-Cost Three-Channel 4th-Order
Standard Def nition Video Filter Driver
Description
The FMS6143 Low-Cost Video Filter (LCVF) is intended
to replace passive LC f lters and drivers with a low-cost
integrated device. Three 4th-order lters provide
improved image quality compared to typical 2nd or
3rd-order passive solutions.
Features
f
■ Three 4th-order 8MHz (SD) f lters
■ Drives single,AC- or DC-coupled, video loads (2Vpp, 150Ω)
■ Drives dual, AC- or DC-coupled, video loads (2Vpp, 75Ω)
■ Transparent input clamping
The FMS6143 may be directly driven by a DC-coupled
DAC output or an AC-coupled signal. Internal diode
clamps and bias circuitry may be used if AC-coupled
inputs are required (see Applications section for details).
■ AC- or DC-coupled inputs
■ AC- or DC-coupled outputs
■ DC-coupled outputs eliminate AC-coupling capacitors
■ 5V only
The outputs can drive AC- or DC-coupled single (150Ω)
or dual (75Ω) loads. DC-coupling the outputs removes
the need for output coupling capacitors. The input DC-
levels are offset approximately +280mV at the output
(see the Applications section for details).
■ Robust 8kV ESD protection
■ Lead-free SOIC-8 package
Applications
■ Cable set-top boxes
■ Satellite set-top boxes
■ DVD players
Related Application Notes
AN-8002 — : http://www.onsemi.com/pub/Collateral
AN-8002.PDF
■ HDTV
AN-6024 — http://www.onsemi.com/pub/Collateral/
■ Personal Video Recorders (PVR)
■ Video On Demand (VOD)
AN-6024.pdf.pdf
AN-6041 — http://www.onsemi.com/pub/Collateral/AN-6041.pdf.pdf
Functional Block Diagram
IN1
IN2
IN3
Transparent Clamp
Transparent Clamp
Transparent Clamp
6dB
6dB
6dB
OUT1
OUT2
OUT3
8MHz, 4th-order
Figure 1. AC-Coupled Inputs and Outputs
Ordering Information
Part Number
Operating
Eco Status
Package
Packaging Method
Temperature Range
FMS6143CSX
-40 to +85°C
RoHS
SOIC-8
Tape and Reel
Publication Order Number:
FMS6143/D
© 2006 Semiconductor Components Industries, LLC.
October-2017, Rev. 5
Pin Conf guration
OUT1
OUT2
1
2
3
4
8
7
6
5
IN1
FMS6143
8-pin
SOIC
IN2
IN3
OUT3
GND
V
CC
Figure 2. AC-Coupled Inputs and Outputs
Pin Assignments
Pin #
Name
Type
Description
1
IN1
Input
Video input, Channel 1
2
3
4
5
6
7
8
IN2
IN3
Input
Input
Video input, Channel 2
Video input, Channel 3
VCC
Input
+5V supply, do not f oat
GND
OUT3
OUT2
OUT1
Output
Output
Output
Output
Must be tied to ground, do not f oat
Filtered output, Channel 3
Filtered output, Channel 2
Filtered output, Channel 1
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2
Absolute Maximum Ratings
The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The
device should not be operated at these limits. The parametric values def ned in the Electrical Characteristics tables are
not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table def nes the conditions
for actual device operation.
Symbol
Parameter
Min.
-0.3
-0.3
Max.
6.0
Unit
V
VCC
DC Supply Voltage
Analog and Digital I/O
V
CC + 0.3
50
V
Output Channel - Any One Channel (Do Not Exceed)
mA
Note:
1. Functional operation under any of these conditions is NOT implied. Performance and reliability are guaranteed only if
operating conditions are not exceeded.
Reliability Information
Symbols
TJ
Parameter
Min.
Typ.
Max.
150
Unit
°C
Junction Temperature
TSTG
Storage Temperature Range
-65
+150
°C
TL
Lead Temperature (Soldering, 10s)
+300
°C
Thermal Resistance, JEDEC Standard Multi-layer
Test Boards, Still Air
θJA
115
°C/W
Electrostatic Discharge Information
Symbols
Parameter
Max.
6.5
Unit
Human Body Model, JESD22-A114
Charged Device Model, JESD22-C101
ESD
kV
2.0
Symbols
TA
Parameter
Operating Temperature Range
VCC Range
Min.
-40
Typ.
Max.
+85
Unit
°C
VCC
4.75
5.00
5.25
V
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3
DC Electrical Characteristics
TA = 25°C, VCC = 5V, RSOURCE = 37.5Ω; all inputs are AC-coupled with 0.1μF; all outputs are AC-coupled with 220μF into
150Ω loads; unless otherwise noted.
Symbol Parameter
Conditions
Min. Typ. Max. Units
ICC
Supply Current(1)
FMS6143 (No Load)
19
1.4
-50
27
mA
VIN
Video Input Voltage Range
Power Supply Rejection
Referenced to GND if DC-coupled
DC (All Channels)
V
pp
dB
PSRR
AC Electrical Characteristics
TA = 25°C, VIN = 1V , VCC = 5V, RSOURCE = 37.5Ω; all inputs are AC-coupled with 0.1μF; all outputs are AC-coupled with
pp
220μF into 150Ω loads; unless otherwise noted.
Symbol Parameter
Conditions
All Channels
All Channels
Min. Typ. Max. Units
AV
Channel Gain(1)
6.0
5.6
6.2
6.5
6.4
dB
f1dB
-1dB Bandwidth(1)
MHz
f
-3dB Bandwidth
All Channels
7.7
48
MHz
dB
%
c
fSB
DG
Attenuation (Stopband Reject)
Differential Gain
All Channels at f = 27MHz
All Channels
0.3
0.6
0.4
-60
75
DP
Differential Phase
All Channels
°
THD
XTALK
SNR
Output Distortion (All Channels) VOUT = 1.8Vpp, 1MHz
Crosstalk (Channel-to-Channel) at 1MHz
%
dB
dB
Signal-to-Noise Ratio
All Channels, NTC-7 Weighting:
100kHz to 4.2MHz
tpd
Propagation Delay
Delay from Input-to-Output, 4.5MHz
59
ns
Note:
1. 100% tested at 25°C.
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Typical Performance Characteristics
TA = 25°C, VCC = 5V, RSOURCE = 37.5Ω; all inputsAC-coupled with 0.1μF; all outputs areAC-coupled with 220μF into 150Ω
loads; unless otherwise noted.
5
0
30
20
10
0
2
-5
1
1
-10
-15
-20
-25
-30
-35
-40
-45
-50
-60
-10
-20
Mkr Frequency
Gain
-30
-40
Ref 400kHz
6dB
1
2
3
6.53MHz
7.72MHz
27MHz
-1dB BW
-3dB BW
-47.13dB
-50
-60
1 = 8.2MHz (12.63ns)
3
400kHz
5
10
15
20
25
30
400kHz
5
10
15
20
25
30
Frequency (MHz)
Frequency (MHz)
Figure 3. Frequency Response
Figure 4. Group Delay vs. Frequency
0.2
-60
NTSC
-70
-80
0.1
0
-90
-100
-110
-120
-130
-0.1
-0.2
-0.3
Min = -0.20
Max = 0.13
ppMax = 0.33
400kHz
1
2
3
4
5
6
1st
2nd
3rd
4th
5th
6th
Frequency (MHz)
Figure 5. Noise vs. Frequency
Figure 6. Differential Gain
1.0
0.8
NTSC
0.6
0.4
0.2
0
Min = 0.00
Max = 0.59
ppMax = 0.59
-0.2
-0.4
1st
2nd
3rd
4th
5th
6th
Figure 7. Differential Phase
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Typical Application Diagrams
The following circuit may be used for direct DC-coupled drive by DACs with an output voltage range of 0V to 1.4V.
AC-coupled or DC-coupled outputs may be used with AC-coupled outputs, offering slightly lower power dissipation.
+5V
DVD Player or STB
0.1
μF
1.0
μF
220μF
220μF
220μF
75Ω Video Cables
R
G
B
75Ω
75Ω
75Ω
1
2
8
7
6
5
ROUT
GOUT
BOUT
IN1
IN2
IN3
VCC
OUT1
OUT2
OUT3
GND
75Ω
75Ω
75Ω
FMS6143
8L SOIC
Video
SoC
3
4
DAC Load Resistors
per SoC specs
AC-Coupling Caps
are Optional
Figure 8. Typical Application Diagram
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Application Information
Video Cables
75Ω
75Ω
LOAD2
(optional)
Application Circuits
75Ω
75Ω
0.65V
The FMS6143 Low Cost Video Filter (LCVF) provides
6dB gain from input to output. In addition, the input is
slightly offset to optimize the output driver performance.
The offset is held to the minimum required value to
decrease the standing DC current into the load. Typical
voltage levels are shown in the diagram below:
Y
LOAD1
Driver
IN
Y
OUT
Video Cables
Figure 10. Input Clamp Circuit
1.0 -> 1.02V
0.65 -> 0.67V
0.3 -> 0.32V
I/O Conf gurations
For a DC-coupled DAC drive with DC-coupled outputs,
use this conf guration:
0.0 -> 0.02V
V
IN
0V - 1.4V
DVD or
STB
SoC
DAC
Output
LCVF
Clamp
Inactive
75Ω
2.28V
1.58V
Driven by:
DC-Coupled DAC Outputs
AC-Coupled and Clamped
Y, CV, R, G, B
0.88V
0.28V
V
OUT
There is a 280mV offset from the DC input level to the
DC output level. V
= 2 * V + 280mV.
OUT
IN
Figure 11. DC-Coupled Inputs and Outputs
Alternatively, if the DAC’s average DC output level causes
the signal to exceed the range of 0V to 1.4V, it can be AC
coupled as follows:
0.85V
0.5V
0.15V
V
0V - 1.4V
0.1μ
IN
DVD or
STB
SoC
DAC
Output
LCVF
Clamp
Active
75Ω
1.98V
1.28V
0.58V
Driven by:
AC-Coupled and Biased
U, V, Pb, Pr, C
V
OUT
Figure 9. Typical Voltage Levels
Figure 12. AC-Coupled Inputs,
DC-Coupled Outputs
The FMS6143 provides an internal diode clamp to sup-
port AC-coupled input signals. If the input signal does not
go below ground, the input clamp does not operate. This
allows DAC outputs to directly drive the FMS6143 without
an AC coupling capacitor. When the input is AC-coupled,
the diode clamp sets the sync tip (or lowest voltage) just
below ground. The worst-case sync tip compression due
to the clamp can not exceed 7mV. The input level set by
the clamp, combined with the internal DC offset, keeps
the output within its acceptable range.
When the FMS6143 is driven by an unknown external
source or a SCART switch with its own clamping circuitry,
the inputs should be AC coupled like this:
0V - 1.4V
0.1μ
LCVF
Clamp
Active
75Ω
External video
source must
be AC coupled
For symmetric signals like Chroma, U, V, Pb, and Pr, the
average DC bias is fairly constant and the inputs can be
AC-coupled with the addition of a pull-up resistor to set
the DC input voltage. DAC outputs can also drive these
same signals without theAC coupling capacitor.Aconceptual
illustration of the input clamp circuit is shown in Figure 10:
75Ω
Figure 13. SCART with DC-Coupled Outputs
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The same method can be used for biased signals, with the External video
0V - 1.4V
source must
be AC coupled
addition of a pull-up resistor to make sure the clamp never
0.1μ
220μ
LCVF
Clamp
Active
75Ω
operates. The internal pull-down resistance is 800kΩ
±20%, so the external resistance should be 7.5MΩ to set
the DC level to 500mV:
75Ω
External video
source must
be AC coupled
7.5MΩ
0.1μ
LCVF
Bias
Input
75Ω
Figure 17. Biased SCART with
AC-Coupled Outputs
75Ω
500mV +/-350mV
NOTE: The video tilt or line time distortion is dominated by
theAC-coupling capacitor. The value may need to be incre-
ased beyond 220μF to obtain satisfactory operation in
some applications.
Power Dissipation
Figure 14. Biased SCART with
DC-Coupled Outputs
The FMS6143 output drive conf guration must be considered
when calculating overall power dissipation. Care must be
taken not to exceed the maximum die junction temperature.
The following example can be used to calculate the power
dissipation and internal temperature rise.
The same circuits can be used with AC-coupled outputs if
desired.
0V - 1.4V
0.1μ
220μ
DVD or
STB
SoC
DAC
Output
LCVF
Clamp
Active
75Ω
TJ = TA + Pd • θJA
(1)
(2)
(3)
(4)
(5)
where: Pd = PCH1 + PCH2 + PCH3 and
PCHx = VCC • ICH - (VO2/RL)
where: VO = 2VIN + 0.280V
ICH = (ICC/3) + (VO/RL)
VIN = RMS value of input signal
ICC = 19mA
Figure 15. DC-Coupled Inputs,
AC-Coupled Outputs
VCC = 5V
RL = channel load resistance
0V - 1.4V
0.1μ
220μ
Board layout can also affect thermal characteristics. Refer
to the Layout Considerations section for details.
DVD or
STB
SoC
LCVF
Clamp
Active
75Ω
The FMS6143 is specif ed to operate with output currents
typically less than 50mA, more than suff cient for a dual
(75Ω) video load. Internal amplif ers are current limited to a
maximum of 100mA and should withstand brief-duration
short-circuit conditions. This capability is not guaranteed.
DAC
Output
Figure 16. AC-Coupled Inputs and Outputs
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8
■ Consider using 70μm of copper for high-power designs.
Layout Considerations
■ Make the PCB as thin as possible by reducing FR4
thickness.
General layout and supply bypassing play a major role in
high-frequency performance and thermal characteristics.
Fairchild offers a demonstration board to guide layout and
aid device evaluation. The demo board is a four-layer board
with full power and ground planes. Following this layout con-
figuration provides optimum performance and thermal
characteristics for the device. For the best results, follow the
steps and recommended routing rules listed below.
■ Use vias in power pad to tie adjacent layers together.
■ Remember that baseline temperature is a function of
board area, not copper thickness.
■ Modeling techniques provide a f rst-order approximation.
Output Considerations
The FMS6143 outputs are DC offset from the input by
150mV. Therefore, VOUT = 2•VIN DC+150mV. This offset is
required to obtain optimal performance from the output dri-
ver and is held at the minimum value to decrease the stan-
ding DC current into the load. Since the FMS6143 has a 2x
(6dB) gain, the output is typically connected via a 75Ω-series
back-matching resistor, followed by the 75Ω video cable.
Due to the inherent divide by two of this conf guration, the
blanking level at the load of the video signal is always less
than 1V. When AC-coupling the output, ensure that the
coupling capacitor of choice passes the lowest frequency
content in the video signal and that line time distortion (video
tilt) is kept as low as possible.
Recommended Routing/Layout Rules
■ Use separate analog and digital power planes to supply
power.
■ Traces should run on top of the ground plane at all times.
■ No trace should run over ground/power splits.
■ Avoid routing at 90-degree angles.
■ Minimize clock and video data trace length differences.
■ Include 10μF and 0.1μF ceramic power supply bypass
capacitors.
■ Place the 0.1μF capacitor within 0.1 inches of the device
power pin.
The selection of the coupling capacitor is a function of the
subsequent circuit input impedance and the leakage current
of the input being driven. To obtain the highest quality output
video signal, the series termination resistor must be placed
as close to the output pin as possible. This reduces the para-
sitic capacitance and inductance effect on the output driver.
The distance from the device pin to the series termination
resistor should be no greater than 0.1 inches.
■ Place the 10μF capacitor within 0.75 inches of the device
power pin.
■ For multi-layer boards, use a large ground plane to help
dissipate heat.
■ For two-layer boards, use a ground plane that extends
beyond the device body at least 0.5 inches on all sides.
Include a metal paddle under the device on the top layer.
■ Minimize all trace lengths to reduce series inductance.
Thermal Considerations
Since the interior of most systems, such as set-top boxes,
TVs, and DVD players, are at +70ºC; consideration must be
given to providing an adequate heat sink for the device pac-
kage for maximum heat dissipation. When designing a sys-
tem board, determine how much power each device dissipa-
tes. Ensure that devices of high power are not placed in the
same location, such as directly above (top plane) or below
(bottom plane), each other on the PCB.
Figure 18. Distance from Device Pin to Series
Termination Resistor
PCB Thermal Layout Considerations
■ Understand the system power requirements and
environmental conditions.
■ Maximize thermal performance of the PCB.
www.onsemi.com
9
Physical Dimensions
5.00
4.80
A
0.65
3.81
8
5
B
1.75
6.20
5.80
4.00
3.80
5.60
1
4
PIN ONE
INDICATOR
1.27
1.27
(0.33)
M
0.25
C B A
LAND PATTERN RECOMMENDATION
SEE DETAIL A
0.25
0.10
0.25
0.19
C
1.75 MAX
0.10
C
0.51
0.33
OPTION A - BEVEL EDGE
0.50
0.25
x 45°
R0.10
R0.10
GAGE PLANE
OPTION B - NO BEVEL EDGE
0.36
NOTES: UNLESS OTHERWISE SPECIFIED
8°
0°
0.90
A) THIS PACKAGE CONFORMS TO JEDEC
MS-012, VARIATION AA, ISSUE C,
B) ALL DIMENSIONS ARE IN MILLIMETERS.
C) DIMENSIONS DO NOT INCLUDE MOLD
FLASH OR BURRS.
SEATING PLANE
(1.04)
0.406
D) LANDPATTERN STANDARD: SOIC127P600X175-8M.
E) DRAWING FILENAME: M08AREV13
DETAIL A
SCALE: 2:1
Figure 19. SOIC-8 Package
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10
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer
application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
designed, intended, or authorized for use as a critical component in life support systems or any FDA Class 3 medical devices or medical devices with a same or similar classification
in a foreign jurisdiction or any devices intended for implantation in the human body. Should Buyer purchase or use ON Semiconductor products for any such unintended or unauthorized
application, Buyer shall indemnify and hold ON Semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such
claim alleges that ON Semiconductor was negligent regarding the design or manufacture of the part. ON Semiconductor is an Equal Opportunity/Affirmative Action Employer. This
literature is subject to all applicable copyright laws and is not for resale in any manner.
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