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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. FMS6144A Four-Channel, 6th-Order SD VoltagePlus™ Video Filter Driver Features Description The FMS6144A VoltagePlus™ video filter is intended to replace passive LC filters and drivers with a costeffective integrated device. Four 6th-order filters provide improved image quality compared to typical 2nd and 3rd order passive solutions. Four-Channel 6th-Order 8MHz (SD) Filter Drives Single, AC- or DC-Coupled Video Loads (150Ω) Transparent Input Clamping Supply Range: 3.3V to 5.0V AC- or DC-Coupled Inputs and Outputs Robust 9kV ESD Protection Lead-Free TSSOP 14-Pin Package Applications The FMS6144A 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 Applications section for details). The outputs can drive AC- or DC-coupled single (150Ω) or dual (75Ω) 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 Applications section for details). Cable Set-Top Boxes Satellite Set-Top Boxes DVD Players HDTV Personal Video Recorders (PVR) Video On Demand (VOD) Related Applications Notes 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 IN1 Transparent Clamp 6d B OUT1 IN2 Transparent Clamp 6d B OUT2 IN3 Transparent Clamp 6d B OUT3 IN4 Transparent Clamp 6d B OUT4 Figure 1. Block Diagram Ordering Information Part Number Operating Temperature Range Package Packing Method FMS6144AMTC14X -40°C to +85°C 14-Lead TSSOP 2500 per Reel © 2009 Fairchild Semiconductor Corporation FMS6144A • Rev. 1.0.2 www.fairchildsemi.com FMS6144A —Four-Channel, 6th-Order SD VoltagePlus™ Video Filter Driver August 2011 Figure 2. 14-Lead TSSOP (Top View) Pin Definitions Pin# Name Type Description 1 IN1 Input Video Input Channel 1 2 IN2 Input Video Input Channel 2 3 IN3 Input Video Input Channel 3 4 IN4 Input Video Input Channel 4 5 GND Input Device Ground Connection 6 NA NA No Connection 7 NA NA No Connection 8 NA NA No Connection 9 NA NA No Connection 10 Vcc Input 11 OUT4 Output Filtered Output Channel 4 12 OUT3 Output Filtered Output Channel 3 13 OUT2 Output Filtered Output Channel 2 14 OUT1 Output Filtered Output Channel 1 © 2009 Fairchild Semiconductor Corporation FMS6144A • Rev. 1.0.2 Positive Power Supply FMS6144A —Four-Channel, 6th-Order SD VoltagePlus™ Video Filter Driver Pin Configuration www.fairchildsemi.com 2 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 Parameter Min. Max. Unit VCC DC Supply Voltage -0.3 6.0 V VIO Analog and Digital I/O -0.3 VCC+0.3 V 50 mA VOUT Maximum Output Current, Do Not Exceed Electrostatic Discharge Information Symbol ESD Parameter Min Human Body Model, JESD22-A114 9 Charged Device Model, JESD22-C101 2 Unit kV Reliability Information Symbol TJ TSTG Parameter Min. Typ. Junction Temperature Storage Temperature Range TL Lead Temperature (Soldering, 10 Seconds) JA Thermal Resistance, JEDEC Standard, Multilayer Test Boards, Still Air -65 Max. Unit +150 °C +150 °C +300 °C 90 °C/W FMS6144A —Four-Channel, 6th-Order SD VoltagePlus™ Video Filter Driver Absolute Maximum Ratings 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 Parameter Min. TA Operating Temperature Range -40 VCC Supply Voltage Range 3.14 © 2009 Fairchild Semiconductor Corporation FMS6144A • Rev. 1.0.2 Typ. Max. Unit +85 °C 3.30 5.25 V www.fairchildsemi.com 3 TA=25°C, VCC=3.3V, RS=37.5Ω, all inputs are AC-coupled with 0.1uF, and all outputs are AC coupled with 220µF into 150Ω load; unless otherwise noted. Symbol Parameter Conditions Min. Typ. Max. Units 3.14 V Supply VCC Supply Voltage Range VS Range 3.30 5.25 VS=+3.3V, No Load 21 24 VS=+5.0V, No Load 25 29 ICC Quiescent Supply Current(1) VIN Video Input Voltage Range Referenced to GND if DC Coupled 1.4 VPP Power Supply Rejection Ratio DC (all Channels) -65 dB PSRR mA Note: 1. 100% tested at TA=25°C AC Electrical Characteristics TA=25°C, VCC=3.3V, RS=37.5Ω, all inputs are AC-coupled with 0.1uF, and all outputs are AC coupled with 220µF into 150Ω load, unless otherwise noted. Symbol AV Parameter (2) Conditions Channel Gain Active Video Input Range = 1VPP Min. Typ. Max. Units 5.8 6.0 6.2 dB BW0.1dB ±0.1dB Bandwidth RSOURCE=75Ω, RL=150Ω 5 MHz BW-1.0dB -1.0 dB Bandwidth RSOURCE=75Ω, RL=150Ω 7 MHz BW3.0dB -3.0 dB Bandwidth RSOURCE=75Ω, RL=150Ω 8 MHz Normalized Stopband (2) Attenuation RSOURCE=75Ω, f=27MHz 60 dB DG Differential Gain - NTSC/PAL Active Video Input Range = 1VPP 0.6 % DP Att27M 45 Differential Phase - NTSC/PAL Active Video Input Range = 1VPP 0.6 ° THD Total Harmonic Distortion f=1.00MHz; VOUT=1.4VPP 0.2 % Xtalk Crosstalk (Channel to Channel) f=1.00MHz; VOUT=1.4VPP -65 dB SNR Peak Signal to RMS Noise NTC-7 Weighting: 100kHz to 4.2MHz 74 dB Propagation Delay Delay from Input to Output; 100KHz to 4.5MHz 90 ns CLG Chroma-Luma Gain(2) 400Khz to 3.58Mhz CLD Chroma-Luma Delay 400Khz to 3.58Mhz Tpd 95 100 7.5 105 FMS6144A —Four-Channel, 6th-Order SD VoltagePlus™ Video Filter Driver DC Electrical Characteristics % ns Note: 2. 100% tested at TA=25°C © 2009 Fairchild Semiconductor Corporation FMS6144A • Rev. 1.0.2 www.fairchildsemi.com 4 Unless otherwise noted, TA = 25°C, VCC = 2.7V, RS = 37.5Ω, and AC-coupled output into 150Ω load. © 2009 Fairchild Semiconductor Corporation FMS6144A • Rev. 1.0.2 Figure 3. Delay vs. Frequency Figure 4. Frequency Response FMS6144A —Four-Channel, 6th-Order SD VoltagePlus™ Video Filter Driver Typical Performance Characteristics www.fairchildsemi.com 5 FMS6144A —Four-Channel, 6th-Order SD VoltagePlus™ Video Filter Driver Typical Performance Characteristics Unless otherwise noted, TA = 25°C, VCC = 2.7V, RS = 37.5Ω, and AC-coupled output into 150Ω load. Figure 5. Frequency Response Flatness Figure 6. © 2009 Fairchild Semiconductor Corporation FMS6144A • Rev. 1.0.2 Noise vs. Frequency u www.fairchildsemi.com 6 Unless otherwise noted, TA = 25°C, VCC = 2.7V, RS = 37.5Ω, and AC-coupled output into 150Ω load. Figure 9. Differential Gain Figure 10. Differential Phase Figure 11. © 2009 Fairchild Semiconductor Corporation FMS6144A • Rev. 1.0.2 FMS6144A —Four-Channel, 6th-Order SD VoltagePlus™ Video Filter Driver Typical Performance Characteristics Chroma / Luma Gain & Delay www.fairchildsemi.com 7 The following circuit may be used for direct DC-coupled drive by DACs with an output voltage range of 0V to 1.4VPP. V_DAC U4-4 BCM7401B0 75 75 75 75 75 75 Video DAC Interface R366 D17 VDAC0_RBIAS VDAC0_0 VDAC0_1 VDAC0_2 VDAC1_RBIAS VDAC1_0 VDAC1_1 VDAC1_2 562_1% R371 562_1% E17 B16 VDAC_LUMA A17 VDAC_CHROMA A16 VDAC_COMP VCC 0.1uF B18 VDAC_BLUE B17 VDAC_GREEN A18 VDAC_RED 0.01uF Green + 75 2 3 75 4 5 75 Figure 12. © 2009 Fairchild Semiconductor Corporation FMS6144A • Rev. 1.0.2 IN3 IN4 OUT2 OUT3 OUT4 GND VCC NC1 NC4 NC2 NC3 75 14 13 Blue 220uF 12 11 75 75 75 75 Red 220uF 10 9 75 75 CVBS + 6 IN2 OUT1 + 75 IN1 + 1 220uF 7 Typical Application 8 220uF 75 FMS6144A —Four-Channel, 6th-Order SD VoltagePlus™ Video Filter Driver Applications Information www.fairchildsemi.com 8 75Ω Application Circuits The FMS6144A VoltagePlus™ video filter 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 Figure 13: LOAD2 (optional) 75Ω 0.65V YIN Driver 1.0 -> 1.02V YOUT LOAD1 75Ω Video Cables 75Ω Figure 14. Input Clamp Circuit 0.65 -> 0.67V I/O Configurations 0.3 -> 0.32V 0.0 -> 0.02V For a DC-coupled DAC drive with DC-coupled outputs, use the configurationin Figure 15. V IN 2.28V 1.58V 0.88V 0.28V Video Cables V OUT Driven by: DC-Coupled DAC Outputs AC-Coupled and Clamped Y, CV, R, G, B 0V - 1.4V 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 15. DC-Coupled Inputs and Outputs 0.85V 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: 0.5V 0.15V V IN 1.98V 0V - 1.4V DVD or STB SoC DAC Output Driven by: AC-Coupled and Biased U, V, Pb, Pr, C 1.28V 0.58V V OUT 0.1μ LCVF Clamp Active 75Ω FMS6144A —Four-Channel, 6th-Order SD VoltagePlus™ Video Filter Driver Application Information Figure 13. Typical Voltage Levels The FMS6144A 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 FMS6144A 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. Figure 16. AC-Coupled Inputs, DC-Coupled Outputs When FMS6144A is driven by an unknown external source or a SCART switch with its own clamping circuitry, the inputs should be AC coupled like Figure 17. 0V - 1.4V 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 the AC coupling capacitor. A conceptual illustration of the input clamp circuit is shown in Figure 14. © 2009 Fairchild Semiconductor Corporation FMS6144A • Rev. 1.0.2 0.1μ LCVF Clamp Active 75Ω 75Ω Figure 17. SCART with DC-Coupled Outputs www.fairchildsemi.com 9 External video source must be AC coupled 75Ω 0.1μ Power Dissipation The 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 example can be used to calculate the power dissipation and internal temperature rise. TJ = TA + PD • JA 7.5MΩ LCVF Bias Input 75Ω (1) where: PD = PCH1 + PCH2 + PCH3 500mV +/-350mV (2) and PCHX = VCC • ICH - (VO2/RL) (3) where: Figure 18. Biased SCART with DC-Coupled Outputs The same circuits can be used with AC-coupled outputs if desired. VO = 2VIN + 0.280V (4) ICH = (ICC/3) + (VO/RL) (5) VIN = RMS value of input signal 0V - 1.4V 0.1μ DVD or STB SoC DAC Output LCVF Clamp Active ICC = 19mA 220μ 75Ω VCC = 3.3V. RL = channel load resistance Board layout can also affect thermal characteristics. Refer to the Layout Considerations section for details. The FMS6144A is specified to operate with output currents typically less than 50mA, more than sufficient for a dual (75Ω) 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. Figure 19. DC-Coupled Inputs, AC-Coupled Outputs 0V - 1.4V 0.1μ DVD or STB SoC DAC Output LCVF Clamp Active 220μ 75Ω FMS6144A —Four-Channel, 6th-Order SD VoltagePlus™ Video Filter Driver The same method can be used for biased signals, with the addition of a pull-up resistor to make sure the clamp never operates. The internal pull-down resistance is 800kΩ ±20%, so the external resistance should be 7.5MΩ to set the DC level to 500mV. Figure 20. AC-Coupled Inputs and Outputs External video source must be AC coupled 0V - 1.4V 0.1μ LCVF Clamp Active 75Ω 220μ 75Ω Figure 21. Biased SCART with AC-Coupled Outputs NOTE: The video tilt or line time distortion is dominated by the AC-coupling capacitor. The value may need to be increased beyond 220μF to obtain satisfactory operation in some applications. © 2009 Fairchild Semiconductor Corporation FMS6144A • Rev. 1.0.2 www.fairchildsemi.com 10 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 the device pin to the series termination resistor should be no greater than 2.54mm (0.1in). General layout and supply bypassing play a major role in high-frequency performance and thermal characteristics. Fairchild offers a four-layer board with full power and ground planes 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 best results, follow the steps and recommended routing rules below. Recommended Routing / Layout Rules Do not run analog and digital signals in parallel. Traces should run on top of the ground plane at all times. No trace should run over ground/power splits. Include 10μF and 0.1μF ceramic power supply bypass capacitors. Place the 0.1μF capacitor within 2.54mm (0.1in) of the device power pin. Place the 10μF capacitor within 19.05mm (0.75in) 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 12.7mm (0.5in) on all sides. Include a metal paddle under the device on the top layer. Minimize all trace lengths to reduce series inductance. Use separate analog and digital power planes to supply power. Avoid routing at 90-degree angles. Figure 22. Minimize clock and video data trace length differences. 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 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 Output Considerations The outputs are DC offset from the input by 150mV therefore VOUT = 2 • VIN DC + 150mV. This offset is required for optimal performance from the output driver and is held at the minimum value to decrease the standing DC current into the load. Since the FMS6144A has a 2x (6dB) gain, the output is typically connected via a 75Ω series back-matching resistor followed by the 75Ω 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 coupling capacitor passes the lowest frequency content in the video signal and that line time distortion (video tilt) is kept as low as possible. © 2009 Fairchild Semiconductor Corporation FMS6144A • Rev. 1.0.2 Termination Resistor Placement Understand the system power requirements and environmental conditions. Maximize thermal performance of the PCB. FMS6144A —Four-Channel, 6th-Order SD VoltagePlus™ Video Filter Driver Layout Considerations Consider using 70μm of copper for high-power designs. Make the PCB as thin as possible by reducing FR4 thickness. 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 first-order approximation. www.fairchildsemi.com 11 0.65 0.43 TYP 1.65 6.10 0.45 12.00°TOP & BOTTOM R0.09 min 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 Figure 23. 1.00 FMS6144A —Four-Channel, 6th-Order SD VoltagePlus™ Video Filter Driver Physical Dimensions R0.09min 14-Lead TSSOP 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/. © 2009 Fairchild Semiconductor Corporation FMS6144A • Rev. 1.0.2 www.fairchildsemi.com 12 FMS6144A —Four-Channel, 6th-Order SD VoltagePlus™ Video Filter Driver © 2009 Fairchild Semiconductor Corporation FMS6144A • Rev. 1.0.2 www.fairchildsemi.com 13 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. 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