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FMS6414
Dual Channel Video Drivers with Integrated Filters
Video Features
* 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 150. * 7.1MHz 4th order video filters * 0.4% differential gain with 0.4 differential phase * Integrated DC Restore / Clamp Circuitry
General Description
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. The video signals are filtered at 7.1MHz and buffered to drive 2Vp-p into AC coupled 150 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 75 load at 1Vp-p. There is an option for the video output to be DC coupled which limits the drive to 1 output.
Applications
* * * * * * * CCTV Cable and Satellite Set top boxes DVD players Televisions HDTV Personal Video Recorders (PVRs) Video On Demand (VOD)
Functional Block Diagram
1
YIN
SYNC STRIP, REF, AND TIMING
x2
YOUT
8
gM
2
1V
NC (Reserved) VCC_VIDEO
7
FMS6414
3 6
GND_VIDEO
NC (Reserved)
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 YIN Y_OUT 8
2
NC
VCC_VIDEO
7
3
GND_VIDEO
NC
6
4
CIN
COUT
5
Video Section
Pin# 1 4 5 8 Pin YIN CIN COUT YOUT Type Input Input Output Output Description Luma (Luminance) / Composite Input Chroma (Chrominance) Input Filtered Chroma (Chrominance) Output Filtered Luma (Luminance) Output
Power/Ground Pins
Pin# 7 3 6 2 Pin VCC_VIDEO GND_VIDEO NC NC Type Power Power NC NC Description +5 VDC for Video Ground for Video Reserved (Need to Float) Reserved (Need to Float)
2
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FMS6414
PRODUCT SPECIFICATION
Functional Description
Introduction
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 150 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 0.1F. The input typically sinks 1A during active video, which nominally tilts a horizontal line by about 2mV at the Video output. During sync, the clamp typically sources 20A 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.
Video I/O
The video inputs are driven by either a low impedance source of 1VP-P or the output of a 75 terminated line. The input is required to be AC coupled via a 0.1F coupling capacitor which allows for a settling time of 5ms. The video output is capable of driving an AC coupled 150 load at 2VP-P, or 1VP-P into a 75 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 220F or larger AC coupling capacitor.
Typical Applications Diagram
YIN
1
0.1F
YIN
SYNC STRIP, REF, AND TIMING x2
220F YOUT
8
75
Video Cable
YOUT
75
gM 2 1V
NC (Reserved) VCC_VIDEO
7
0.1F
+5.0V
1F
FMS6414
3
GND_VIDEO NC (Reserved)
6
gM
CIN
1V 4 CIN
0.1F x2 COUT
220F
75
5
Video Cable
COUT
75
Figure 1.
REV. 1.0.1 6/27/02
3
PRODUCT SPECIFICATION
FMS6414
Absolute Maximum Ratings (beyond which the device may be damaged)
Parameter VCC_VIDEO (Positive DC Supply Voltage) GND_VIDEO (Negative DC Supply Voltage) Analog and Digital I/O Output Current (Continuous) Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10s) Thermal Resistance (JA) -65 GND - 0.3 VCC + 0.3 60 150 +150 260 115 Min Max +6.5 Units V V V mA C C C 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 Temperature Range VCC_VIDEO Range GND_VIDEO ICC (+5 VDC) Min 0 4.75 5.0 0 60 Typ Max 70 5.25 Units C V V mA
4
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FMS6414
PRODUCT SPECIFICATION
Electrical Characteristics
1Vp-p signal at room temperature Video Characteristics - Unless otherwise noted, typical output loading on video output is 150. Symbol AVYC YSYNC CSYNC tCLAMP f1dB fC fSB Vi ISC CL dG dP THD XTALK Parameter Low Frequency Gain (YOUT, COUT) YOUT Output Level (During Sync) COUT Output Level (During Sync) Clamp Response Time (Y Channel) -1.0dB Bandwidth (Flatness) (YOUT, COUT) -3dB Bandwidth (Flatness) (YOUT, COUT) Stopband Rejection (YOUT, COUT) Input Signal Dynamic Range (All Channels) Output Short Circuit Current (All Channels) Output Shunt Capacitance Differential Gain Differential Phase Output Distortion (All Channels) Crosstalk fIN = 27MHz to 100MHz worst case AC Coupled YOUT, COUT to GND (Note 2) All Channels YOUT, COUT YOUT, COUT YOUT/ COUT = 1.8VP-P at 3.58/ 4.43MHz From CIN of 0.5VP-P at 3.58MHz to YOUT From YIN Input of 0.4VP-P at 3.58MHz, to COUT PSRR SNR tpd tpd tSKEW PSRR (All Channels) Y, C Channel Group Delay (Y, C) Group Delay Deviation from Flatness (Y, C) Skew between YOUT and COUT 0.5VP-P (100kHz) at VCC NTC-7 weighting 4.2 MHz lowpass 100kHz to 3.58MHz (NTSC) to 4.43MHz (PAL) At 1MHz Condition VCC_VIDEO=+5.0V 10% at 400KHz Sync Present on YIN Sync Present on YIN Settled to Within 10mV, 0.1F cap on YIN and CIN No Peaking Cap (Note 1) 4.0 6.7 -37 1.3 Min 5.75 0.75 1.6 Typ 6.0 1.0 2.0 5 4.5 7.1 -42 1.4 40 35 0.4 0.4 0.8 -55 -58 -40 -75 70 9 7 0 80 Max Units 6.25 1.25 2.4 dB V V ms MHz MHz dB VP-P mA pF % % dB dB dB dB ns ns ns ns
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
PIN 1 ID
0.148 - 0.158 0.228 - 0.244 (3.76 - 4.01) (5.79 - 6.20)
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) SEATING PLANE
0.004 - 0.010 (0.10 - 0.26)
0.015 - 0.035 (0.38 - 0.89)
0.006 - 0.010 (0.15 - 0.26)
6
REV. 1.0.1 6/27/02
PRODUCT SPECIFICATION
FMS6414
Ordering Information
Part Number FMS6414CS FMS6414CSX Temperature 0 to 70 0 to 70 Range Package 8 Pin SOIC (S08) 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

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