FMS6400 Dual Channel Video Drivers with Integrated Filters and Composite Video Summer Features Description ■ 7.1 MHz 5th order Y,C filters with composite summer The FMS6400 is a dual Y/C 5th order Butterworth lowpass video filter optimized for minimum overshoot and flat group delay. The device also contains a summing circuit to generate filtered composite video. In a typical application, the Y and C input signals from DACs are AC coupled into the filters. Both channels have DC restore circuitry to clamp the DC input levels during video sync. The Y and C channels use separate feedback clamps. The clamp pulse is derived from the Y channel. ■ Selectable for 0dB or 6dB gain ■ 50dB stopband attenuation at 27MHz on Y, C and CV outputs ■ Better than 0.1 dB flatness to 4.5MHz on Y,C and CV outputs ■ No external frequency selection components or clocks ■ < 5ns group delay deviation on Y, C and CV outputs ■ AC-Coupled Inputs ■ AC or DC-Coupled Outputs All outputs are capable of driving 2Vpp, AC or DC coupled, into either a single or dual video load. A single video load consists of a series 75Ω impedance matching resistor connected to a terminated 75Ω line. This presents a total of 150Ω of loading to the part. A dual load would be two of these in parallel which would present a total of 75Ω to the part. The gain of the Y, C and CV signals can be selected for 0dB or 6dB with 1Vpp input levels. All video channels are clamped during sync to establish the appropriate output voltage reference levels. ■ Capable of PAL frequency selection components or clocks ■ 0.3% / 0.2° differential gain/phase on Y,C and CV channels ■ Integrated DC restore circuitry with low tilt ■ Lead (Pb) Free SOIC-8 Package Applications ■ Cable and Satellite set top boxes ■ DVD players The FMS6400 typical cutoff frequency is 7.1MHz. Option for a lower cutoff frequency of 5MHz is available. Please refer to the FMS6400-1 datasheet for further information. ■ Personal Video Recorders (PVR) ■ Video On Demand (VOD) Block Diagrams VCC 7 Sync Strip Reference and Timing YIN 0 or 6dB 1 8 YOUT 6 CVOUT 5 COUT gM 250mV + S + gM 250mV CIN ©2004 Fairchild Semiconductor Corporation FMS6400 Rev. 1A 0 or 6dB 4 3 2 GND ASEL 1 www.fairchildsemi.com FMS6400 Dual Channel Video Drivers with Integrated Filters and Composite Video Summer September 2005 Pin Assignments Pin# Pin Type Description 1 YIN Input Luminance (Luma) Input: In a typical system, this pin is connected to the Luma or composite video output pin from the external video encoder. 2 ASEL Input Channel Gain Select. ‘0’= 0dB, ‘1’ = 6dB 3 GND Input Must be tied to Ground 4 CIN Input Chrominance (Chroma) Input: In a typical system, this pin is connected to the Chroma output pin from the external video encoder. 5 COUT Output Filtered Chrominance Video Output from the CIN channel. 6 CVOUT Output Composite Video Output: This pin is the sum of YOUT and COUT. FAIRCHILD YIN 1 8 YOUT 7 VCC 6 CVOUT FMS6400 ASEL 2 8L SOIC GND CIN 3 4 5 COUT 7 VCC Input 8 YOUT Output +5V supply Filtered Luminance Output from the YIN channel. Typical Application Diagram FMS6400 may also be DC-Coupled 0.1µF YIN 1 YIN YOUT 75Ω 8 220µF YOUT 75Ω User Sets to logic 0 or 1 2 FMS6400 ASEL CVOUT 75Ω 6 220µF To TV 75Ω 0.1µF CIN 4 75Ω 220µF CIN COUT 5 5V 0.1µF VCC GND 7 3 75Ω 75Ω CVOUT to VCR 220µF COUT 10µF 75Ω Figure 1. AC or DC-Coupled Application Diagram 2 FMS6400 Rev. 1A www.fairchildsemi.com FMS6400 Dual Channel Video Drivers with Integrated Filters and Composite Video Summer Pin Configuration Parameter Min. Max. Unit DC Supply Voltage -0.3 6 V Analog and Digital I/O -0.3 Vcc + 0.3 V 40 mA Output Current Any One Channel, Do Not Exceed Note: Functional operation under any of these conditions in NOT implied. Performance and reliability are guaranteed only if operating conditions are not exceeded. Reliability Information Parameter Min. Typ. Max. Unit 150 °C 150 °C 300 °C Junction Temperature Storage Temperature Range -65 Lead Temperature (Soldering, 10s) Thermal Resistance (ThetaJA), JEDEC Standard Multi-Layer Test Boards, Still Air 115 °C/W Recommended Operating Conditions Parameter Min. Operating Temperature Range Max. Unit 70 °C 5.0 5.25 V 0 Supply Voltage Range 4.75 3 FMS6400 Rev. 1A Typ. www.fairchildsemi.com FMS6400 Dual Channel Video Drivers with Integrated Filters and Composite Video Summer Absolute Maximum Ratings Tc = 25°C, Vcc = 5V, Vin = 1Vpp, ASEL = 1 (6dB gain), all inputs AC coupled with 0.1uF, all outputs AC coupled with 220uF into 150Ω loads, referenced to 400kHz; unless otherwise noted. Symbol Parameter Conditions Current1 ICC Supply Vi Input Voltage Max PSRR Power Supply Rejection Ratio Min. No load All channels, DC Typ. Max 50 60 Units mA 1.4 Vpp 60 dB AC Electrical Characteristics Tc = 25°C, Vcc = 5V, Vin = 1Vpp, ASEL = 1 (6dB gain), all inputs AC coupled with 0.1uF, all outputs AC coupled with 220uF into 150Ω loads, referenced to 400kHz; unless otherwise noted. Symbol Parameter Conditions Min. AV0dB Channel Gain 1 All Channels, ASEL = 0 -0.25 AV6dB Channel Gain1 All Channels, ASEL = 1 5.75 Typ. Max Units 0 0.6 dB 6.0 6.25 dB Csync COUT Output Level (during sync)1 Sync present on YIN 1.0 1.3 V Ysync YOUT Output Level (during sync)1 Sync present on YIN 0.35 0.5 V CVsync CVOUT Output Level (during sync)1 Sync present on YIN 0.35 0.5 TCLAMP Clamp Response Time (Y channel) Settled to within 10mV fFLAT Gain Flatness to 4.5MHz All Channels fC -3dB Bandwidth1 All Channels 6.7 fSB Stopband Attenuation1 All Channels at 27MHz 42 dG Differential Gain All Channels dP Differential Phase THD Output Distortion XTALK SNR tpd Propagation Delay 10 V ms 0 dB 7.1 MHz 50 dB 0.3 % All Channels 0.2 deg VOUT = 1.4Vpp, 3.58MHz 0.2 % Crosstalk 3.58MHz -50 dB Signal-to-Noise Ratio All Channels NTC-7 weighting, 4.2MHz LP, 100kHz HP 81 dB All Channels 115 ns GD Group Delay Deviation All Channels at 3.58MHz 3 ns tSKEW Skew Between YOUT and COUT at 1MHz 0 ns tCLGCV Chroma-Luma Gain CVOUT1 f = 3.58MHz (ref to YIN at 400kHz) tCLDCV Chroma-Luma Delay CVOUT f = 3.58MHz (ref to YIN at 400kHz) 96 100 3 104 % ns Notes: 1. 100% tested at 25°C 4 FMS6400 Rev. 1A www.fairchildsemi.com FMS6400 Dual Channel Video Drivers with Integrated Filters and Composite Video Summer DC Electrical Characteristics Layout Considerations Functional Description General layout and supply bypassing play major roles in high frequency performance and thermal characteristics. Fairchild offers a demonstration board, FMS6400DEMO, to use as a guide for layout and to aid in device testing and characterization. The FMS6400DEMO is a 4-layer board with a full power and ground plane. For optimum results, follow the steps below as a basis for high frequency layout: This product is a two channel monolithic continuous time video filter designed for reconstructing the luminance and chrominance signals from an S-Video D/A source. Composite video output is generated by summing the Y and C outputs. The chip is designed to have AC coupled inputs and will work equally well with either AC or DC coupled outputs. • Include 10µF and 0.1µF ceramic bypass capacitors The reconstruction filters provide a 5th order Butterworth response with group delay equalization. This provides a maximally flat response in terms of delay and amplitude. Each of the three outputs is capable of driving 2Vpp into a 75Ω load. • 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 • If using DC-coupled outputs, use a large ground plane to help dissipate heat All channels are clamped during the sync interval to set the appropriate minimum output dc level. With this operation the effective input time constant is greatly reduced, which allows for the use of small low cost coupling capacitors. The net effect is that the input will settle to 10mV in 10ms for any DC shifts present in the input video signal. • Minimize all trace lengths to reduce series inductances In most applications the input coupling capacitors are 0.1µF. The Y and C inputs typically sink 1µA of current during active video, which normally tilts a horizontal line by 2mV at the Y output. During sync, the clamp restores this leakage current by sourcing an average of 20µA over the clamp interval. Any change in the coupling capacitor values will affect the amount of tilt per line. Any reduction in tilt will come with an increase in settling time. Luminance (Y) I/O The typical luma input is driven by either a low impedance source of 1Vpp or the output of a 75Ω terminated line driven by the output of a current DAC. In either case, the input must be capacitively coupled to allow the sync-detect and DC restore circuitry to operate properly. All outputs are capable of driving 2Vpp, AC or DC coupled, into either a single or dual video load. A single video load consists of a series 75Ω impedance matching resistor connected to a terminated 75Ω line, this presents a total of 150Ω of loading to the part. A dual load would be two of these in parallel which would present a total of 75Ω to the part. Channel gain of 0dB on all channels can be selected by tying pin 2 to ground. Channel gain of 6dB on all channels can be selected by tying pin 2 to VCC. Both gain settings assume standard input video levels of 1Vpp. Chrominance (C) I/O The chrominance input can be driven in the same manner as the luminance input but is typically only a 0.7Vpp signal. Since the chrominance signal doesn't contain any DC content, the output signal can be AC coupled using as small as a 0.1µF capacitor if DC coupling is not desired. Composite Video (CV) Output The composite video output driver is same as the other outputs. 5 FMS6400 Rev. 1A www.fairchildsemi.com FMS6400 Dual Channel Video Drivers with Integrated Filters and Composite Video Summer Applications Information FMS6400 Rev. 1A FMS6400 Dual Channel Video Drivers with Integrated Filters and Composite Video Summer Mechanical Dimensions www.fairchildsemi.com 6 FMS6400 Dual Channel Video Drivers with Integrated Filters and Composite Video Summer Ordering Information Model Part Number Lead Free Package Container Pack Qty FMS6400 FMS6400CS Yes SOIC-8 Rail 95 FMS6400 FMS6400CSX Yes SOIC-8 Reel 2500 Temperature range for all parts: 0°C to 70°C. 7 FMS6400 Rev. 1A www.fairchildsemi.com The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. ACEx™ FACT Quiet Series™ ActiveArray™ FAST® Bottomless™ FASTr™ CoolFET™ FPS™ CROSSVOLT™ FRFET™ DOME™ GlobalOptoisolator™ EcoSPARK™ GTO™ E2CMOSTM HiSeC™ EnSignaTM I2C™ FACT™ ImpliedDisconnect™ Across the board. Around the world.™ The Power Franchise™ Programmable Active Droop™ ISOPLANAR™ LittleFET™ MICROCOUPLER™ MicroFET™ MicroPak™ MICROWIRE™ MSX™ MSXPro™ OCX™ OCXPro™ OPTOLOGIC® OPTOPLANAR™ PACMAN™ POP™ Power247™ PowerTrench® QFET® QS™ QT Optoelectronics™ Quiet Series™ RapidConfigure™ RapidConnect™ SILENT SWITCHER® SMART START™ SPM™ Stealth™ SuperFET™ SuperSOT™-3 SuperSOT™-6 SuperSOT™-8 SyncFET™ TinyLogic® TINYOPTO™ TruTranslation™ UHC™ UltraFET® VCX™ 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. PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Product Status Definition Advance Information Formative or In Design This datasheet contains the design specifications for product development. Specifications may change in any manner without notice. Preliminary First Production This datasheet contains preliminary data, and supplementary data will be published at a later date. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. No Identification Needed Full Production This datasheet contains final specifications. Fairchild Semiconductor reserves the right to make changes at any time without notice in order to improve design. Obsolete Not In Production This datasheet contains specifications on a product that has been discontinued by Fairchild semiconductor. The datasheet is printed for reference information only. Rev. I7 8 FMS6400 Rev. 1A www.fairchildsemi.com FMS6400 Dual Channel Video Drivers with Integrated Filters and Composite Video Summer TRADEMARKS