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FMS6364A -- Low-Cost Four-Channel Standard Definition (SD) & High Definitions (HD) Video Filter Driver
March 2010
FMS6364A Low-Cost Four-Channel Standard Definition (SD) & High (HD) Definition Video Filter Driver
Features
Three 7 -Order 32MHz (HD) Filters th One 6 -Order 8MHz (SD) Filter Drives Single AC- or DC-Coupled Video Loads (150) Drives Dual AC- or DC-Coupled video Loads (75) Transparent Input Clamping Single Supply: 3.3V - 5.0V AC- or DC-Coupled Inputs and Outputs DC-Coupled Output Eliminates AC-Coupling Capacitor Robust 9kV ESD Protection Lead-Free TSSOP-14 Package
th
Description
The FMS6364A Low-Cost Video Filter (LCVF) is intended to replace passive LC filters and drivers with a th low-cost integrated device. Three 7 -order filters th provide HD quality and a single 6 -order SD channel provides compatibility. The FMS6364A 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 the Application Information section for details). The outputs can drive AC- or DC-coupled single (150) or dual (75) video loads. DC coupling the outputs removes the need for large output coupling capacitors. The input DC levels are offset approximately +280mV at the output (see the Application Information section).
Applications
Cable Set-Top Boxes Satellite Set-Top Boxes DVD Players HDTV Personal Video Recorders (PVR) Video On Demand (VOD)
Related Resources
AN-8002 - FMS6418B 4:2:2 Application Note AN-6024 - FMS6xxx Product Series; Understanding Analog Video Signal Clamps, Bias, DC Restore, and AC- or DC-Coupling Methods AN-6041 - PCB Layout Considerations for Video Filter/Drivers
Ordering Information
Part Number
FMS6364AMTC14X
Operating Temperature Range
-40C to +85C
Eco Status
RoHS
Package
14-Lead TSSOP, JEDEC
Packing Method
2500 Units per Reel
MO-153, 4.4mm Wide
For Fairchild's definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
(c) 2010 Fairchild Semiconductor Corporation FMS6364A * Rev. 3.0.1
www.fairchildsemi.com
FMS6364A -- Low-Cost Four-Channel Standard Definition (SD) & High Definitions (HD) Video Filter Driver
Block Diagram
IN1
Clamp
SD
6d B
OUT1
IN2
Bias
HD
6d B
OUT2
IN3
Bias
HD
6d B
OUT3
IN4
Clamp
HD
6d B
OUT4
Figure 1. Block Diagram
Pin Configuration
Figure 2. Pin Configuration
Pin Definitions
Pin#
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Name
IN1 GND IN2 IN3 IN4 NC Vcc GND NC OUT4 OUT3 OUT2 GND OUT1
Type
Input Input Input Input Input Power Ground Output Output Output Ground Output
Description
Video Input Channel SD Device Ground Connection Video Input Channel HD (Pr) Video Input Channel HD (Pb) Video Input Channel HD (Y) No Connection Positive Power Supply Device Ground Connection No Connection Filtered Output Channel HD (Y) Filtered Output Channel HD (Pb) Filtered Output Channel HD (Pr) Device Ground Connection Filtered Output Channel SD
(c) 2010 Fairchild Semiconductor Corporation FMS6364A * Rev. 3.0.1
www.fairchildsemi.com 2
FMS6364A -- Low-Cost Four-Channel Standard Definition (SD) & High Definitions (HD) Video Filter Driver
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only.
Symbol
VS VIO VOUT DC Supply Voltage Analog and Digital I/O
Parameter
Min.
-0.3 -0.3
Max.
6.0 VCC+0.3 50
Unit
V V mA
Maximum Output Current, Do Not Exceed
Reliability Information
Symbol
TJ TSTG TL JA
Parameter
Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10 Seconds) Thermal Resistance, JEDEC Standard, Multilayer Test Boards, Still Air
Min.
-65
Typ.
Max.
150 150 300
Unit
C C C C/W
115
Electrostatic Discharge Protection
Symbol
HBM CDM
Parameter
Human Body Model ESD Charged Device Model ESD
Condition
IEC61340-3-1:2002 Level 2 JESD22-C101-A Level III
Minimum Level
9 2
Unit
kV kV
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
TA VCC
Parameter
Operating Temperature Range Supply Voltage Range
Min.
-40 3.135
Typ.
3.300
Max.
85 5.250
Unit
C V
(c) 2010 Fairchild Semiconductor Corporation FMS6364A * Rev. 3.0.1
www.fairchildsemi.com 3
FMS6364A -- Low-Cost Four-Channel Standard Definition (SD) & High Definitions (HD) Video Filter Driver
DC Electrical Characteristics
Unless otherwise noted, TA=25C, VCC=3.3V, RS=37.5, all inputs are AC coupled with 0.1F, and all output AC coupled with 220F into 150 load.
Symbol
Supply VS ICC Vin PSRR
Parameter
Supply Voltage Range Quiescent Supply Current
(1)
Conditions
VS Range VS=+3.3V, No Load, EN=LOW VS=+5.25V, No Load, EN=LOW Referenced to GND if DC Coupled DC (All Channels)
Min.
3.135
Typ.
3.30 50 55 1.4 -50
Max.
5.25 65 76
Units
V mA mA Vpp dB
Video Input Voltage Range Power Supply Rejection Ratio
Note: 1. 100% tested at TA=25C.
Standard-Definition Electrical Characteristics
Unless otherwise noted, TA=25C, VIN=1VPP, VCC=5V, RSOURCE=37.5, all inputs AC coupled with 0.1F, all outputs AC coupled with 220F into 150 loads, and referenced to 400kHz.
Symbol
AVSD f01dBSD f1dBSD fcSD fSBSD DG DP THD XTALKSD SNR tpdSD CLGSD CLDSD tON tOFF
Parameter
Channel Gain
(2)
Conditions
All SD Channels All SD Channels All SD Channels
Min.
5.8 7 8 45
Typ.
6.0 5 8 9 60 0.3 0.6 0.35 -74 76 90
Max.
6.2
Units
dB MHz MHz MHz dB % % dB dB ns
-0.1dB Flatness -1dB Flatness
(2) (2) (2)
-3dB Bandwidth
All SD Channels All SD Channels at f=27MHz All SD Channels All SD Channels VOUT=1.4VPP, 3.58MHz 1MHz NTC-7 weighting, 100kHz to 4.2MHz Delay from input to output, 4.5MHz
(2)
Attenuation (Stopband Reject) Differential Gain Differential Phase
Total Harmonic Distortion, Output Crosstalk (Channel-to-Channel) Signal-to-Noise Ratio Propagation Delay Chroma Luma Gain
(3)
f=3.58MHz (ref to SDIN at 400kHz) f=3.58MHz (ref to SDIN at 400kHz)
95
100 5.5 1 1
105
% ns s s
Chroma Luma Delay Enable Time Disable Time
Notes: 2. 100% tested at TA=25C. 3. SNR=20 * log (714mV / rms noise).
(c) 2010 Fairchild Semiconductor Corporation FMS6364A * Rev. 3.0.1
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FMS6364A -- Low-Cost Four-Channel Standard Definition (SD) & High Definitions (HD) Video Filter Driver
High-Definition Electrical Characteristics
Unless otherwise noted, TA=25C, VCC=3.3V, RS=37.5, all inputs are AC coupled with 0.1F, and all outputs AC coupled with 220F into 150 load.
Symbol
AV BW 0.5dB BW -1.0dB BW 3.0dB Att37.125M Att44.25M Att74.25M Att78M THD1 THD2 THD3 Xtalk SNR tpd
Parameter
Channel Gain(4) 0.5dB Bandwidth
(4) (4)
Conditions
Active Video Input Range=1VPP RSOURCE=75, RL=150 RSOURCE=75, RL=150 RSOURCE=75, RL=150 RSOURCE=75, f=37.325MHz RSOURCE=75, f=44.25MHz RSOURCE=75, f=74.25MHz RSOURCE=75, f=78MHz f=10 MHz ; VOUT=1.4Vpp f=15 MHz ; VOUT=1.4Vpp f=22 MHz ; VOUT=1.4Vpp f=1.00 MHz ; VOUT=1.4Vpp Unweighted: 30MHz Lowpass, 100kHz to 30MHz Delay from Input to Output; 100KHz to 26MHz
Min.
5.8 28 32
Typ.
6.0 24 30 34 6.5 14.5
Max.
6.2
Units
dB MHz MHz MHz dB dB dB dB %
-1.0 dB Bandwidth
-3.0 dB Bandwidth(4) Normalized Stopband Attenuation(4)
40 42
44 46 0.4 0.5 0.5 -70 70 25
Output Distortion (All Channels) Crosstalk (Channel-to-Channel) Peak Signal to RMS Noise Propagation Delay
dB dB ns
Note: 4. 100% tested at 25C.
(c) 2010 Fairchild Semiconductor Corporation FMS6364A * Rev. 3.0.1
www.fairchildsemi.com 5
FMS6364A -- Low-Cost Four-Channel Standard Definition (SD) & High Definitions (HD) Video Filter Driver
Typical Performance Characteristics
Unless otherwise noted, TA = 25C, VCC = 3.3V, RS = 37.5, and AC-coupled output into 150 load.
5.00 5.00 15.00 25.00 35.00
1.00 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 0.10 0.85 1.60 2.35 3.10 3.85 4.60 5.34 6.09 6.84 7.59 8.34 9.09 9.84 10.59 11.34 12.09
Attenuation
45.00 55.00 65.00 75.00 0.10 3.35 6.59 9.84 13.09 16.33 19.58 22.83 26.07 29.32 32.57 35.81 39.06 42.31 45.55 48.80
Frequency
Figure 3. SD Frequency Response
Attenuation
Frequency
Figure 4. SD Flatness
5.00 5.00 15.00 25.00
35.00 45.00 55.00 65.00 0.10 6.59 13.09 19.58 26.07 32.57 39.06 45.55 52.05 58.54 65.04 71.53 78.02 84.52 91.01 97.50
2.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 0.10 3.35 6.59 9.84 13.09 16.33 19.58 22.83 26.07 29.32 32.57 35.81 39.06 42.31 45.55 48.80
Attenuation
Attenuation
Frequency
Figure 5. HD Frequency Response
Frequency
Figure 6. HD Flatness
Figure 7. Differential Gain
(c) 2010 Fairchild Semiconductor Corporation FMS6364A * Rev. 3.0.1 www.fairchildsemi.com 6
FMS6364A -- Low-Cost Four-Channel Standard Definition (SD) & High Definitions (HD) Video Filter Driver
Typical Performance Characteristics
Unless otherwise noted, TA = 25C, VCC = 3.3V, RS = 37.5, and AC-coupled output into 150 load.
Figure 8. Differential Phase
Figure 9. SNR vs Frequency
Figure 10. Chroma/Luma Gain & Delay
Figure 11. Typical Application
(c) 2010 Fairchild Semiconductor Corporation FMS6364A * Rev. 3.0.1 www.fairchildsemi.com 7
FMS6364A -- Low-Cost Four-Channel Standard Definition (SD) & High Definitions (HD) Video Filter Driver
Application Information
Application Circuits
The FMS6364A 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:
1.0 -> 1.02V 0.65 -> 0.67V 0.3 -> 0.32V 0.0 -> 0.02V V IN
0.65 V
75
Video Cables
LOAD2 (optional)
75
YIN
Driver
YOUT
LOAD1
75
Video Cables
75
Figure 13.
Input Clamp Circuit
I/O Configurations
For a DC-coupled DAC drive with DC-coupled outputs, use the configuration in Figure 14.
0V - 1.4V
2.28V 1.58V 0.88V 0.28V V OUT
Driven by: DC-Coupled DAC Outputs AC-Coupled and Clamped Y, CV, R, G, B
DVD or STB SoC DAC Output
LCVF Clamp Inactive
75W
There is a 280mV offset from the DC input level to the DC output level. V OUT = 2 * V IN + 280mV.
Figure 14.
0.85V 0.5V 0.15V V IN 1.98V 1.28V 0.58V V OUT
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 shown in Figure 15.
0V - 1.4V
Driven by: AC-Coupled and Biased U, V, Pb, Pr, C
DVD or STB SoC DAC Output
0.1
LCVF Clamp Active
75
Figure 12. Typical Voltage Levels The FMS6364A provides an internal diode clamp to support 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 FMS6364A 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 cannot exceed 7mV. The input level set by the clamp, combined with the internal DC offset, keeps the output within its acceptable range. For symmetric signals like Chroma, U, V, Pb, and Pr; the average DC bias is fairly constant and the inputs can be AC coupled. DAC outputs can also drive these same signals without the AC-coupling capacitor. A conceptual illustration of the input clamp circuit is shown in Figure 13:
Figure 15. AC-Coupled Inputs, DC-Coupled Outputs When the FMS6364A is driven by an unknown external source or a SCART switch with its own clamping circuitry, the inputs should be AC coupled as shown in Figure 16.
0V - 1.4V
External video source must be AC coupled
0.1
LCVF Clamp Active
75
75
Figure 16.
SCART with DC-Coupled Outputs
(c) 2010 Fairchild Semiconductor Corporation FMS6364A * Rev. 3.0.1
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FMS6364A -- Low-Cost Four-Channel Standard Definition (SD) & High Definitions (HD) Video Filter Driver
The same method can be used for biased signals. The Pb and Pr channels are biased to set the DC level to 500mV. The same circuits can be used with AC-coupled outputs if desired.
0V - 1.4V
Power Dissipation
The FMS6364A output drive configuration must be considered when calculating overall power dissipation. Care must be taken not to exceed the maximum die junction temperature. The following equations can be used to calculate the power dissipation and internal temperature rise. TJ = TA + PD * where: PD = PCH1 + PCH2 + PCH3 and PCHx = VCC * ICH - (VO2/RL) where: VO = 2VIN + 0.280V (4) (5) (2) (3) JA (1)
DVD or STB SoC DAC Output
0.1
LCVF Clamp Active
75
220
Figure 17. AC-Coupled Inputs and Outputs
External video source must be AC coupled
0V - 1.4V 0.1
LCVF Clamp Active
75
220
ICH = (ICC/3) + (VO/RL) VIN = RMS value of input signal ICC = 50mA VCC = 3.3V RL = channel load resistance.
75
Figure 18. Biased SCART with AC-Coupled Outputs Note: 5. The video tilt or line time distortion is dominated by the AC-coupling capacitor. The value may need to be increased beyond 220F to obtain satisfactory operation in some applications.
Board layout can also affect thermal characteristics. Refer to the Layout Considerations section for details. The FMS6364A is specified to operate with output currents typically less than 50mA, more than sufficient for a dual (75) video load. Internal amplifiers are current limited to a maximum of 100mA and should withstand brief-duration short-circuit conditions. This capability is not guaranteed.
(c) 2010 Fairchild Semiconductor Corporation FMS6364A * Rev. 3.0.1
www.fairchildsemi.com 9
FMS6364A -- Low-Cost Four-Channel Standard Definition (SD) & High Definitions (HD) Video Filter Driver
Layout Considerations
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 configuration provides optimum performance and thermal characteristics for the device. For the best results, follow the steps and recommended routing rules listed below. 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. 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 device output pin as possible. This greatly reduces the parasitic capacitance and inductance effect on the output driver. The distance from device pin to the series termination resistor should be no greater than 0.5 inches.
Recommended Routing/Layout Rules
Do not run analog and digital signals in parallel. Use separate analog and digital power planes to supply power. Do not run traces on top of the ground plane. Run no traces over ground/power splits. Avoid routing at 90-degree angles. Minimize clock and video data trace length differences. Include 0.01F and 0.1F ceramic power supply bypass capacitors. Place the 0.1F capacitor within 0.1 inches of the device power pin. Place the 0.01F 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. Place a 75 series resistor within 0.5 inches of the output pin to isolate the output driver from board parasitics.
0.5"
Figure 19. Recommended Resistor Placement
Thermal Considerations
Since the interior of systems such as set-top boxes, TVs, and DVD players are at +70C; consideration must be given to providing an adequate heat sink for the device package for maximum heat dissipation. When designing a system board, determine how much power each device dissipates. 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.
PCB Thermal Layout Considerations
Understand the system power requirements and environmental conditions. Maximize thermal performance of the PCB. Consider using 70m of copper for high-power designs. Make the PCB as thin as possible by reducing FR4 thickness. Use vias in the power pad to tie adjacent layers together. Remember that baseline temperature is a function of board area, not copper thickness. Consider modeling techniques a first-order approximation.
Output Considerations
The FMS6364A 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 driver and is held at the minimum value to decrease the standing DC current into the load. Since the FMS6364A has a 2x (6dB) gain, the output is typically connected via a 75-series back-matching resistor followed by the 75 video cable. Because of the inherent divide by two of this configuration, the blanking level at the load of the video signal is always less than 1V. When AC coupling the output, ensure that the
(c) 2010 Fairchild Semiconductor Corporation FMS6364A * Rev. 3.0.1
www.fairchildsemi.com 10
FMS6364A -- Low-Cost Four-Channel Standard Definition (SD) & High Definitions (HD) Video Filter Driver
Physical Dimensions
0.43 TYP
0.65
1.65
0.45
6.10
12.00TOP R0.09 min
& BOTTOM
A. CONFORMS TO JEDEC REGISTRATION MO-153, VARIATION AB, REF NOTE 6 B. DIMENSIONS ARE IN MILLIMETERS C. DIMENSIONS ARE EXCLUSIVE OF BURRS, MOLD FLASH, AND TIE BAR EXTRUSIONS D. DIMENSIONING AND TOLERANCES PER ANSI Y14.5M, 1982 E. LANDPATTERN STANDARD: SOP65P640X110-14M F. DRAWING FILE NAME: MTC14REV6
1.00
R0.09min
Figure 20. 14-Lead TSSOP, JEDEC MO-153, 4.4mm Wide
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild's worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor's online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/.
(c) 2010 Fairchild Semiconductor Corporation FMS6364A * Rev. 3.0.1
www.fairchildsemi.com 11
www.fairchildsemi.com
FMS6364A -- Low-Cost Four-Channel Standard Definition (SD) & High Definitions (HD) Video Filter Driver
(c) 2010 Fairchild Semiconductor Corporation FMS6364A * Rev. 3.0.1
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