www.fairchildsemi.com FMS6414 Dual Channel Video Drivers with Integrated Filters Video Features General Description • Dual Integrated Video Low Pass reconstruction filters on outputs • Integrated output drivers provide low impedance outputs and deliver 2Vp-p (6dB gain) composite video into 150Ω. • 7.1MHz 4th order video filters • 0.4% differential gain with 0.4° differential phase • Integrated DC Restore / Clamp Circuitry The FMS6414 Dual Channel Video Filter – Driver Chip offers comprehensive video filtering for set top box or DVD applications. This part consists of two 4th order video Low Pass Filters for video filtering. This device integrates video drivers so that it can directly drive to the outside world. Applications • • • • • • • CCTV Cable and Satellite Set top boxes DVD players Televisions HDTV Personal Video Recorders (PVRs) Video On Demand (VOD) The video signals are filtered at 7.1MHz and buffered to drive 2Vp-p into AC coupled 150Ω loads with up to 35pF of load capacitance at the output pin. The filters approximate a 4th-order Butterworth characteristic with an optimization toward low overshoot and flat group delay. Likewise, they are capable of driving a 75Ω load at 1Vp-p. There is an option for the video output to be DC coupled which limits the drive to 1 output. Functional Block Diagram 1 SYNC STRIP, REF, AND TIMING YIN YOUT x2 8 gM 2 1V NC (Reserved) VCC_VIDEO 7 FMS6414 3 GND_VIDEO NC (Reserved) 6 gM 1V 4 CIN x2 COUT 5 REV. 1.0.1 6/27/02 PRODUCT SPECIFICATION FMS6414 Pin Description FMS6414 8-Pin SOIC (S08) 1 2 3 4 YIN Y_OUT NC VCC_VIDEO GND_VIDEO CIN NC COUT 8 7 6 5 Video Section Pin# Pin Type Description 1 YIN Input Luma (Luminance) / Composite Input 4 CIN Input Chroma (Chrominance) Input 5 COUT Output Filtered Chroma (Chrominance) Output 8 YOUT Output Filtered Luma (Luminance) Output Power/Ground Pins 2 Pin# Pin Type Description 7 VCC_VIDEO Power +5 VDC for Video 3 GND_VIDEO Power Ground for Video 6 NC NC Reserved (Need to Float) 2 NC NC Reserved (Need to Float) REV. 1.0.1 6/27/02 FMS6414 PRODUCT SPECIFICATION Functional Description Introduction sources 20µA to restore the DC level. The net result is that the average input current is zero. Any change in the input coupling capacitor’s value will inversely alter the amount of tilt per line. Such a change will also linearly affect the clamp response time. This product is robust and stable under all stated load and input conditions. Capacitive bypassing VCC directly to ground ensures this performance. The FMS6414 is a monolithic continuous time video filter designed for reconstructing the luminance, chrominance, or composite video signals from D/A source. The chip is intended for use in applications with AC coupled input and AC coupled outputs. (See Figure 1) The reconstruction filters approximate a 4th-order Butterworth characteristic with an optimization toward low over-shoot and flat group delay. The video outputs are each capable of driving 2VP-P into an AC coupled 150Ω video load, with up to 35pF of load capacitance at the output pin. The channel is clamped during sync to establish the appropriate output voltage swing range. Thus the input coupling capacitors do not behave according to the conventional RC time constant. Clamping for all channels settles to less than 10mv within 5ms of a change in video input source. In most applications the input coupling capacitors are 0.1µF. The input typically sinks 1µA during active video, which nominally tilts a horizontal line by about 2mV at the Video output. During sync, the clamp typically Video I/O The video inputs are driven by either a low impedance source of 1VP-P or the output of a 75Ω terminated line. The input is required to be AC coupled via a 0.1µF coupling capacitor which allows for a settling time of 5ms. The video output is capable of driving an AC coupled 150Ω load at 2VP-P, or 1VP-P into a 75Ω load. Up to 35pF of load capacitance (at the output pin) can be driven without stability or slew issues. The output is AC coupled with a 220µF or larger AC coupling capacitor. Typical Applications Diagram SYNC STRIP, REF, AND TIMING YIN 1 YIN 220µF YOUT x2 8 75Ω YOUT Video Cable 0.1µF 75Ω gM 2 1V NC (Reserved) VCC_VIDEO +5.0V 7 0.1µF 1µF FMS6414 3 GND_VIDEO NC (Reserved) 6 gM 1V CIN 4 CIN 220µF x2 COUT 5 75Ω COUT Video Cable 0.1µF 75Ω Figure 1. REV. 1.0.1 6/27/02 3 PRODUCT SPECIFICATION FMS6414 Absolute Maximum Ratings (beyond which the device may be damaged) Parameter Min VCC_VIDEO (Positive DC Supply Voltage) Max Units +6.5 V GND_VIDEO (Negative DC Supply Voltage) Analog and Digital I/O V GND – 0.3 VCC + 0.3 V Output Current (Continuous) 60 mA Junction Temperature 150 °C Storage Temperature Range +150 °C Lead Temperature (Soldering, 10s) -65 260 °C Thermal Resistance (ΘJA) 115 °C/W Note: Functional operation under any of these conditions is NOT implied. Performance and reliability are guaranteed only if Operating Conditions are not exceeded. Operating Conditions Parameter 4 Min Temperature Range 0 VCC_VIDEO Range 4.75 Typ 5.0 Max Units 70 °C 5.25 V GND_VIDEO 0 V ICC (+5 VDC) 60 mA REV. 1.0.1 6/27/02 FMS6414 PRODUCT SPECIFICATION Electrical Characteristics 1Vp-p signal at room temperature Video Characteristics – Unless otherwise noted, typical output loading on video output is 150Ω. Symbol Parameter Condition VCC_VIDEO=+5.0V ±10% Min Typ Max Units AVYC Low Frequency Gain (YOUT, COUT) at 400KHz 5.75 6.0 6.25 dB YSYNC YOUT Output Level (During Sync) Sync Present on YIN 0.75 1.0 1.25 V CSYNC COUT Output Level (During Sync) Sync Present on YIN 1.6 2.0 2.4 tCLAMP Clamp Response Time (Y Channel) Settled to Within 10mV, 0.1µF cap on YIN and CIN f1dB –1.0dB Bandwidth (Flatness) (YOUT, COUT) No Peaking Cap (Note 1) fC –3dB Bandwidth (Flatness) (YOUT, COUT) fSB Stopband Rejection (YOUT, COUT) Vi V 5 ms 4.0 4.5 MHz 6.7 7.1 MHz fIN = 27MHz to 100MHz worst case -37 -42 dB Input Signal Dynamic Range (All Channels) AC Coupled 1.3 1.4 VP-P ISC Output Short Circuit Current (All Channels) YOUT, COUT to GND (Note 2) 40 CL Output Shunt Capacitance All Channels 35 pF dG Differential Gain YOUT, COUT 0.4 % dP Differential Phase YOUT, COUT 0.4 ° THD Output Distortion (All Channels) YOUT/ COUT = 1.8VP-P at 3.58/ 4.43MHz 0.8 % XTALK Crosstalk From CIN of 0.5VP-P at 3.58MHz to YOUT -55 dB From YIN Input of 0.4VP-P at 3.58MHz, to COUT -58 dB 80 mA PSRR PSRR (All Channels) 0.5VP-P (100kHz) at VCC -40 dB SNR Y, C Channel NTC-7 weighting 4.2 MHz lowpass -75 dB tpd Group Delay (Y, C) 100kHz 70 ns ∆tpd Group Delay Deviation from Flatness (Y, C) to 3.58MHz (NTSC) 9 ns to 4.43MHz (PAL) 7 ns Skew between YOUT and COUT At 1MHz 0 ns tSKEW Notes: 1. Peaking capacitor increases output at 4.2MHz nominally by 0.7dB 2. Sustained short circuit protection limited to 10 seconds REV. 1.0.1 6/27/02 5 PRODUCT SPECIFICATION FMS6414 Mechanical Dimensions Inches (millimeters) Package: S08 8-Pin SOIC 0.189 - 0.199 (4.80 - 5.06) 8 0.148 - 0.158 0.228 - 0.244 (3.76 - 4.01) (5.79 - 6.20) PIN 1 ID 1 0.017 - 0.027 (0.43 - 0.69) (4 PLACES) 0.050 BSC (1.27 BSC) 0.059 - 0.069 (1.49 - 1.75) 0° - 8° 0.055 - 0.061 (1.40 - 1.55) 0.012 - 0.020 (0.30 - 0.51) 0.004 - 0.010 (0.10 - 0.26) 0.015 - 0.035 (0.38 - 0.89) 0.006 - 0.010 (0.15 - 0.26) SEATING PLANE 6 REV. 1.0.1 6/27/02 PRODUCT SPECIFICATION FMS6414 Ordering Information Part Number Temperature Range Package FMS6414CS 0° to 70° 8 Pin SOIC (S08) FMS6414CSX 0° to 70° Tape and Reel 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 THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com 6/27/02 0.0m 004 Stock#DS30006414 2002 Fairchild Semiconductor Corporation