FMS6690 Six Channel, 6th Order SD/PS/HD Video Filter Driver Features Description ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ The FMS6690 Low Cost Video Filter (LCVF) is intended to replace passive LC filters and drivers with a low-cost integrated device. Six 6th order Butterworth filters provide improved image quality compared to typical passive solutions. The combination of low power Standard Definition (SD), Progressive Scan (PS), and High Definition (HD) filters greatly simplify DVD video output circuitry. Three channels offer fixed SD filters and feature an additional muxed input, while the other three channels are selectable between PS and HD filters. The FMS6690 offers a fixed gain of 6dB. Three selectable sixth-order 15/32MHz (PS/HD) filters Three fixed sixth-order 8MHz (SD) filters with muxed input Transparent input clamping Single video load drive (2Vpp, 150Ω, AV = 6dB) AC or DC-coupled inputs AC or DC-coupled outputs DC-coupled outputs eliminate AC-coupling capacitors Low power 5V only Lead (Pb) free packages - TSSOP-20 The FMS6690 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). Applications ■ ■ ■ ■ ■ Cable and satellite set-top boxes DVD players HDTV Personal Video Recorders (PVR) Video On Demand (VOD) The outputs can drive AC or DC-coupled single (150Ω) video loads. DC-coupling the outputs removes the need for output coupling capacitors. The input DC levels will be offset approximately +280mV at the output. Block Diagram SD IN1 Transparent Clamp 6dB SD OUT1 SD IN2 Transparent Clamp 6dB SD OUT2 Transparent Clamp 6dB SD OUT3 SD IN3A SD IN3B MUXSEL A/B 8MHz, 6th order PS/HD IN1 Transparent Clamp 6dB PS/HD OUT1 PS/HD IN2 Transparent Clamp 6dB PS/HD OUT2 PS/HD IN3 Transparent Clamp 6dB PS/HD OUT3 Selectable 15/32MHz 6th order FcSEL PS/HD FMS6690 Rev. 2B 1 www.fairchildsemi.com FMS6690 Six Channel, 6th Order SD/PS/HD Video Filter Driver January 2006 FMS6690 Six Channel, 6th Order SD/PS/HD Video Filter Driver Pin Assignments Pin Configuration Pin # Pin Type 1 SD IN1 Input SD IN1 1 20 SD OUT1 SD IN2 2 19 SD OUT2 SD IN3A 3 18 SD OUT3 2 SD IN2 Input SD video input, channel 2 3 SD IN3A Input SD video input, channel 3A 4 SD IN3B Input SD video input, channel 3B 5 VCC Input +5V supply 6 FcSEL Input Selects filter corner frequency for pins 7, 8, and 9. “0” = PS, “1” = HD 7 PS/HD IN1 Input Selectable PS or HD video input, channel 1 8 PS/HD IN2 Input Selectable PS or HD video input, channel 2 9 PS/HD IN3 Input Selectable PS or HD video input, channel 3 10 N/C Input No Connect N/C Input No Connect FMS6690 20L TSSOP SD IN3B 4 17 GND VCC 5 16 GND FcSEL 6 15 MuxSEL PS/HD IN1 7 14 PS/HD OUT1 PS/HD IN2 8 13 PS/HD OUT2 PS/HD IN3 9 12 PS/HD OUT3 N/C 10 11 N/C 11 Description SD video input, channel 1 12 PS/HD OUT3 Output Filtered PS or HD video output, channel 3 13 PS/HD OUT2 Output Filtered PS or HD video output, channel 2 14 PS/HD OUT1 Output Filtered PS or HD video output, channel 1 15 MUXSEL Input Mux selects between channel 3A and 3B inputs. “0” = A, “1” = B 16 GND Input Must be tied to Ground 17 GND Input Must be tied to Ground 18 SD OUT3 Output Filtered SD video output, channel 3 19 SD OUT2 Output Filtered SD video output, channel 2 20 SD OUT1 Output Filtered SD video output, channel 1 Absolute Maximum Ratings Min Max Unit DC Supply Voltage Parameter -0.3 6 V Analog and Digital I/O -0.3 Vcc + 0.3 V 50 mA Output Current, Any One Channel (Do Not Exceed) Reliability Information Parameter Min Typ Junction Temperature Storage Temperature Range -65 Lead Temperature (Soldering, 10s) Thermal Resistance (ThetaJA), JEDEC Standard Multi-Layer Test Boards, Still Air Max Unit 150 ˚C 150 ˚C 300 ˚C 74 ˚C/W Recommended Operating Conditions Parameter Min Operating Temperature Range Supply Voltage Range www.fairchildsemi.com Typ 0 4.75 2 5.0 Max Unit 70 ˚C 5.25 V FMS6690 Rev. 2B Tc = 25˚C, Vcc = 5V, Rsource = 37.5Ω, inputs AC coupled with 0.1µF, all outputs AC coupled with 220µF into 150Ω loads, referenced to 400kHz; unless otherwise noted. Symbol Parameter ICC Supply Current1 Conditions Min Typ Max no load 60 80 Referenced to GND, if DC-coupled 1.4 Units Vin Video Input Voltage Range Vil Digital Input Low1 FcSEL 0 0.8 V Vih Digital Input High1 FcSEL 2.4 Vcc V mA Vpp Standard Definition Electrical Characteristics Tc = 25˚C, Vin = 1Vpp, Vcc = 5V, Rsource = 37.5Ω, all inputs AC coupled with 0.1µF, all outputs AC coupled with 220µF into 150Ω loads, referenced to 400kHz; unless otherwise noted. Symbol Min Typ Max Units All SD Channels 5.6 6.0 6.4 dB f1dBSD -1dB Bandwidth1 All SD Channels 5.2 7.15 MHz fcSD -3dB Bandwidth1 All SD Channels 6.5 8.0 MHz All SD Channels at f = 27MHz 43 50 dB 0.7 % AVSD Parameter Conditions Channel Gain1 reject)1 fSBSD Attenuation(stopband DG Differential Gain All SD Channels DP Differential Phase All SD Channels 1.0 ˚ THD Output Distortion VOUT = 1.4Vpp, 3.58MHz 0.35 % XTALKSD Crosstalk (ch-to-ch) at 1MHz -54 dB SNR Signal-to-Noise Ratio2 NTC-7 weighting, 100kHz to 4.2MHz 72 dB tpdSD Propagation Delay Delay from input to output, 4.5MHz 90 ns Progressive Scan Electrical Characteristics Tc = 25˚C, Vin = 1Vpp, Vcc = 5V, Rsource = 37.5Ω, FcSEL = 0, all inputs AC coupled with 0.1µF, all outputs AC coupled with 220µF into 150Ω loads, referenced to 400kHz; unless otherwise noted. Symbol Parameter Gain1 Conditions Min Typ Max 6.4 Units AVPS Channel All PS Channels 5.6 6.0 f1dBSPS -1dB Bandwidth1 All PS Channels 12 14 MHz dB fcPS -3dB Bandwidth1 All PS Channels 13 16 MHz fSBPS Attenuation(stopband reject)1 All PS Channels at f = 54MHz 37 45 dB THD Output Distortion (All PS channels) VOUT = 1.4Vpp, 7MHz 0.35 % XTALKPS Crosstalk (ch-to-ch) at 1MHz -53 dB SNR Signal-to-Noise Ratio2 unweighted; 100kHz to 15MHz 66 dB tpdPS Propagation Delay Delay from input to output 47 ns Notes: 1. 100% tested at 25˚C 2. SNR = 20 * log (714mV/rms noise) FMS6690 Rev. 2B 3 www.fairchildsemi.com FMS6690 Six Channel, 6th Order SD/PS/HD Video Filter Driver DC Electrical Characteristics FMS6690 Six Channel, 6th Order SD/PS/HD Video Filter Driver High Definition Electrical Characteristics Tc = 25˚C, Vin = 1Vpp, Vcc = 5V, Rsource = 37.5Ω, FcSEL = 1, all inputs AC coupled with 0.1µF, all outputs AC coupled with 220µF into 150Ω loads, referenced to 400kHz; unless otherwise noted Symbol Parameter Gain1 Conditions Min Typ Max 6.4 Units AVHD Channel All HD Channels 5.6 6.0 f1dBHD -1dB Bandwidth1 All HD Channels 28 31 MHz fcHD -3dB Bandwidth1 All HD Channels 30 34 MHz fSBHD Attenuation(stopband reject)1 All HD Channels at f = 74.25MHz 30 41 dB THD Output Distortion (all HD channels) VOUT = 1.4Vpp, 22MHz 0.9 % dB XTALKHD Crosstalk (ch-to-ch) at 1MHz -54 dB SNR Signal-to-Noise Ratio2 unweighted, 100kHz to 30MHz 60 dB tpdHD Propagation Delay Delay from input to output 25 ns Notes: 1. 100% tested at 25˚C 2. SNR = 20 * log (714mV/rms noise) www.fairchildsemi.com 4 FMS6690 Rev. 2B Tc = 25˚C, Vin = 1Vpp, VCC = 5V, Rsource = 37.5Ω, inputs AC coupled with 0.1µF, all outputs AC coupled with 220µF into 150Ω loads; unless otherwise noted. Figure 2. SD Flatness vs. Frequency Figure 1. SD Gain vs. Frequency 0.35 0.30 Normalized Gain (dB) Normalized Gain (dB) 5 0 -5 -10 -15 -20 -25 -30 -35 -40 0.25 0.20 0.15 0.10 0.05 0 -0.05 -45 -0.10 -50 400kHz -0.15 5 10 15 20 25 30 400kHz 1 Frequency (MHz) -20 5 0.8-30 0 -30 -5 -10-40 0.7 0.6-40 -15-50 -20 -25-60 -30-70 -35 -80 -40 5 6 Using 0.1µF and 0.01µF Bypass Capacitors as suggested 0.5 -50 0.4 0.3-60 0.2 0.1-70 -0.2-90 10 20 1 30 40 50 10 6030 400kHz 0.1 2 4 Frequency Frequency(MHz) (MHz) 8 10 10 12 1430 Figure 6. HD Flatness vs. Frequency 5 1.0 0.9 Normalized Gain (dB) 0 -5 -10 -15 -20 -25 -30 -35 -40 400kHz 10 61 Frequency Frequency(MHz) (MHz) Figure 5. HD Gain vs. Frequency Normalized Gain (dB) 4 0 -80 -0.1 -45-90 20 30 40 50 60 70 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -0.1 400kHz 80 Frequency (MHz) FMS6690 Rev. 2B 3 Figure 4. PS Flatness vs. Frequency Normalized Gain (dB) PSRR (dB) Normalized PSRR Gain (dB) (dB) Figure 3. PS Gain vs. Frequency 400kHz 0.1 2 Frequency (MHz) 5 10 15 20 25 30 Frequency (MHz) 5 www.fairchildsemi.com FMS6690 Six Channel, 6th Order SD/PS/HD Video Filter Driver Typical Performance Characteristics Tc = 25˚C, Vin = 1Vpp, VCC = 5V, Rsource = 37.5Ω, inputs AC coupled with 0.1µF, all outputs AC coupled with 220µF into 150Ω loads; unless otherwise noted. Figure 8. Noise vs. Frequency Figure 7. SD Group Delay vs. Frequency 70 1.0 NTSC Differential Gain (%) Group Delay (ns) 60 50 40 30 20 0.5 0 Min = 0.05 Max = 0.59 ppmax = 0.63 10 0 400kHz 1 -1.0 2 3 4 5 6 7 8 9 10 1st 2nd 3rd 4th 5th 6th Frequency (MHz) Figure 9. PS Group Delay vs. Frequency Figure 10. SD Differential Gain 1.0 35 Differential Phase (Deg) Group Delay (ns) 30 25 20 15 10 5 0 400kHz 2 NTSC 0 -1.0 Min = 0.00 Max = 1.00 ppmax = 1.00 -2.0 4 6 8 10 12 14 16 18 20 1st 2nd 3rd 4th 5th 6th Frequency (MHz) Figure 11. HD Group Delay vs. Frequency 25 Group Delay (ns) FMS6690 Six Channel, 6th Order SD/PS/HD Video Filter Driver Typical Performance Characteristics 20 15 10 5 0 400kHz 5 10 15 20 25 30 35 40 45 Frequency (MHz) www.fairchildsemi.com 6 FMS6690 Rev. 2B Functional Description 0.65V The FMS6690 Low Cost Video Filter (LCVF) provides 6dB gain (9dB optional, contact factory for further information) from input to output. In addition, the input will be 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. YIN Driver YOUT 800kΩ 1.0 -> 1.02V Figure 13. Input Clamp Circuit 0.65 -> 0.67V I/O Configurations 0.3 -> 0.32V 0.0 -> 0.02V 2.28V 1.58V 0.88V 0.28V For DC-coupled DAC drive with DC-coupled outputs, use this configuration: VIN VOUT 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 75Ω There will be a 280mV offset from the DC input level to the DC output level. VOUT = 2 * VIN + 280mV Figure 14. 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 VIN 0V - 1.4V 1.98V DVD or STB SoC DAC Output Driven by: AC-Coupled and Biased U, V, Pb, Pr, C 1.28V 0.58V VOUT 0.1u LCVF Clamp Active 75Ω Figure 12. Typical Voltage Levels The FMS6690 provides an internal diode clamp to support ACcoupled input signals. If the input signal does not go below ground, the input clamp will not operate. This allows DAC outputs to directly drive the FMS6690 without an AC coupling capacitor. The worst-case sync tip compression due to the clamp will not exceed 7mV. The input level set by the clamp combined with the internal DC offset will keep the output within its acceptable range. When the input is AC-coupled, the diode clamp will set the sync tip (or lowest voltage) just below ground. Figure 15. AC-coupled Inputs, DC-coupled Outputs When the FMS6690 is driven by an unknown external source or a SCART switch with its own clamping circuitry, the inputs should be AC-coupled as follows: 0V - 1.4V 0.1u External Video source must be AC-coupled. For symmetric signals like C, U, V, Cb, Cr, 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 below: LCVF Clamp Active 75Ω 75Ω Figure 16. SCART Configuration with DC-coupled Outputs FMS6690 Rev. 2B 7 www.fairchildsemi.com FMS6690 Six Channel, 6th Order SD/PS/HD Video Filter Driver Applications Information FMS6690 Six Channel, 6th Order SD/PS/HD Video Filter Driver Power Dissipation 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. If a pull-up resistance less than 7.5MΩ is desired, an external pull-down can be added such that the DC input level is set to 500mV. The FMS6690 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 FMS6690’s power dissipation and internal temperature rise. Tj = TA + Pd • ΘJA External Video source must 7.5MΩ be AC-coupled. 0.1u 75Ω where Pd = PCH1 + PCH2 + PCHx LCVF Bias Input and PCHx = Vs • ICH - (VO2/RL) 75Ω where VO = 2Vin + 0.280V 500mV +/-350mV ICH = (ICC / 6) + (VO/RL) Vin = RMS value of input signal ICC = 60mA Figure 17. Biased SCART with DC-coupled Outputs Vs = 5V The same circuits can be used with AC-coupled outputs if desired. RL = channel load resistance 0V - 1.4V DVD or STB SoC DAC Output LCVF Clamp Inactive Board layout can also affect thermal characteristics. Refer to the Layout Considerations Section for more information. 220u 75Ω Layout Considerations General layout and supply bypassing play major roles in high frequency performance and thermal characteristics. Fairchild offers a demonstration board, FMS6690DEMO, to use as a guide for layout and to aid in device testing and characterization. The FMS6690DEMO is a 4-layer board with a full power and ground plane. Following this layout configuration will provide the optimum performance and thermal characteristics. For optimum results, follow the steps below as a basis for high frequency layout: Figure 18. DC-coupled Inputs, AC-coupled Outputs 0V - 1.4V DVD or STB SoC DAC Output 0.1u LCVF Clamp Active 75Ω • Include 10µF and 0.1µF ceramic bypass capacitors 220μ • Place the 10µF capacitor within 0.75 inches of the power pin • Place the 0.1µF capacitor within 0.1 inches of the power pin • For multi-layer boards, use a large ground plane to help dissipate heat • For 2 layer boards, use a ground plane that extends beyond the device by at least 0.5” Figure 19. AC-coupled Inputs, AC-coupled Outputs • Minimize all trace lengths to reduce series inductances External video source must 7.5MΩ be AC-coupled. 0.1μ 75Ω LCVF Clamp Active 75Ω 220μ 500mV +/-350mV Figure 20. Biased SCART with AC-coupled Outputs NOTE: The video tilt or line time distortion will be dominated by the AC-coupling capacitor. The value may need to be increased beyond 220µF in order to obtain satisfactory operation in some applications. www.fairchildsemi.com 8 FMS6690 Rev. 2B 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 DCcoupled outputs may be used with AC-coupled outputs offering slightly lower power dissipation. DVD Player or STB +5V 0.1 uF Y1OUT 10.0 uF 1 75Ω 220uF 75Ω 220uF 75Ω Video Cables Y1 75Ω C 19 COUT SD IN2 SD OUT2 75Ω 3 CV 18 SD OUT3 SD IN3A 75Ω 4 16, 17 SD IN3B Video SoC 220uF SD OUT1 2 CVOUT 75Ω 20 SD IN1 GND FAIRCHILD FMS6690 20L TSSOP 5 Vcc 75Ω G/Y2OUT 7 220uF 75Ω Video Cables Y2/G 14 PS/HD IN1 PS/HD OUT1 75Ω 75Ω B/PbOUT 8 220uF Pb/B 13 PS/HD IN2 PS/HD OUT2 75Ω 75Ω R/PrOUT 9 PS/HD IN3 MUXSEL 220uF Pr/R PS/HD OUT3 12 FcSEL 15 75Ω 6 AC-Coupling Caps are Optional DAC Load Resistors Figure 21. Typical Application Diagram FMS6690 Rev. 2B 9 www.fairchildsemi.com FMS6690 Six Channel, 6th Order SD/PS/HD Video Filter Driver Typical Application Diagram FMS6690 Six Channel, 6th Order SD/PS/HD Video Filter Driver Mechanical Dimensions 20-Lead Thin Shrink Outline Package (TSSOP) 6 e –B– 7 N 5 (b) 2X E/2 TSSOP-20 8 1.0 DIA E1 E c SYMBOL A A1 A2 L R R1 b b1 c c1 01 L1 aaa bbb ccc ddd e 02 03 D E1 E e N c1 1.0 b1 ddd C B A 1 2 3 6 2X N/2 TIPS SECTION AA e /2 9 1.0 ccc 7 A2 D 8 3 –A– aaa C A –C– b NX A1 (02) (0.20) bbb M C B A R1 –H– R GAGE PLANE 10 A 0.25 (03) L A 01 (L1) MIN – 0.05 0.85 0.50 0.09 0.09 0.19 0.19 0.09 0.09 0° NOM – – 0.90 0.60 – – – 0.22 – – – 1.0 REF 0.10 0.10 0.05 0.20 0.65 BSC 12° REF 12° REF 6.50 4.40 6.4 BSC 0.65 BSC 20 6.50 4.30 MAX 1.10 0.15 0.95 0.75 – – 0.30 0.25 0.20 0.16 8° 6.60 4.50 NOTES: 1 All dimensions are in millimeters (angle in degrees). 2 Dimensioning and tolerancing per ASME Y14.5–1994. 3 Dimensions "D" does not include mold flash, protusions or gate burrs. Mold flash protusions or gate burrs shall not exceed 0.15 per side . 4 Dimension "E1" does not include interlead flash or protusion. Interlead flash or protusion shall not exceed 0.25 per side. 5 Dimension "b" does not include dambar protusion. Allowable dambar protusion shall be 0.08mm total in excess of the "b" dimension at maximum material condition. Dambar connot be located on the lower radius of the foot. Minimum space between protusion and adjacent lead is 0.07mm for 0.5mm pitch packages. 6 Terminal numbers are shown for reference only. 7 Datums – A – and – B – to be determined at datum plane – H – . 8 Dimensions "D" and "E1" to be determined at datum plane – H – . 9 This dimensions applies only to variations with an even number of leads per side. For variation with an odd number of leads per side, the "center" lead must be coincident with the package centerline, Datum A. 10 Cross sections A – A to be determined at 0.10 to 0.25mm from the leadtip. 8 Lead SYMBOL D E1 E e N MIN 2.90 4.30 SYMBOL D E1 E e N MIN 6.50 4.30 NOM 3.0 4.40 6.4 BSC 0.65 BSC 8 14 Lead MAX 3.10 4.50 SYMBOL D E1 E e N MIN 4.90 4.30 MAX 6.60 4.50 SYMBOL D E1 E e N MIN 7.70 4.30 20 Lead www.fairchildsemi.com NOM 6.50 4.40 6.4 BSC 0.65 BSC 20 NOM 5.00 4.40 6.4 BSC 0.65 BSC 14 16 Lead MAX 5.10 4.50 SYMBOL D E1 E e N MIN 4.90 4.30 MAX 7.90 4.50 SYMBOL D E1 E e N MIN 9.50 4.30 24 Lead NOM 7.80 4.40 6.4 BSC 0.65 BSC 24 10 NOM 5.00 4.40 6.4 BSC 0.65 BSC 16 MAX 5.10 4.50 28 Lead NOM 9.70 4.40 6.4 BSC 0.65 BSC 28 MAX 9.80 4.50 FMS6690 Rev. 2B FMS6690 Six Channel, 6th Order SD/PS/HD Video Filter Driver Ordering Information Lead Free Package Container Pack Qty FMS6690 FMS6690MTC20 Yes TSSOP-20 Rail 94 FMS6690 FMS6690MTC20X Yes TSSOP-20 Reel 2500 Model Part Number Temperature range for all parts: 0˚C to 70˚C. FMS6690 Rev. 2B 11 www.fairchildsemi.com FMS6690 Six Channel, 6th Order SD/PS/HD Video Filter Driver DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component is any component of a life 1. Life support devices or systems are devices or support device or system whose failure to perform can systems which, (a) are intended for surgical implant into be reasonably expected to cause the failure of the life the body, or (b) support or sustain life, or (c) whose support device or system, or to affect its safety or failure to perform when properly used in accordance with instructions for use provided in the labeling, can be effectiveness. reasonably expected to result in significant injury to the user. www.fairchildsemi.com 12 ©2006 Fairchild Semiconductor Corporation