FMS6408-10 FAIRCHILD [Fairchild Semiconductor], FMS6408-10 Datasheet

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FMS6408-10

Manufacturer Part Number
FMS6408-10
Description
Triple Video Filter Driver for RGB and YUV Signals
Manufacturer
FAIRCHILD [Fairchild Semiconductor]
Datasheet
FMS6408
Triple Video Filter Driver for RGB and YUV Signals
Features
• 7.6MHz 5th order RGB/YUV/YC CV filters
• 50dB stopband attenuation at 27MHz on all outputs
• Better than 0.5dB flatness to 4.2MHz on all outputs
• No external frequency selection components or clocks
• AC coupled inputs and AC or DC coupled outputs
• Supports both NTSC and PAL luminance bandwidth
• Continuous time low pass filters for video anti-aliasing
• <1% differential gain with 0.5° differential phase on
• Integrated DC restore circuitry with low tilt
Applications
• Cable set top boxes
• Satellite set top boxes
• Terrestrial set top boxes
• DVD players
• Personal Video Recorders (PVR)
• Video On Demand (VOD)
Functional Block Diagram
or reconstruction applications
all channels
U INA
U INB
Y INA
Y INB
V INA
V INB
* Factory Selected Clamp
IN
and Peaking Levels
MUX
(A/B)
8MHz
8MHz
8MHz
gM
gM
gM
*
*
*
BYPASS (BYPASS/FILTER)
250mV
250mV or
1.125V *
250mV or
1.125V *
Description
The FMS6408 provides three video signal paths including a
two-input mux, a video filter and a 6dB gain output driver.
The filter bandwidth supports RGB and YUV signals in
either NTSC or PAL formats.
The video filters approximate a 5th order Butterworth low
pass characteristic optimized for minimum overshoot and
flat group delay to provide excellent image quality. Four
different peaking options are available. The video filters can
be bypassed if desired.
In a typical application, the RGB or YUV DAC outputs are
AC coupled into the filters through the input mux. All
channels have DC restore circuitry to clamp the DC input
levels during video sync. The clamp pulse derived from the
selected Y input controls three independent feedback clamps.
All outputs are capable of driving 2V
into either a single (150 Ω ) or dual (75 Ω ) video load. The
FMS6408 clamp levels can be factory programmed for YUV
/RGB (250mV for all channels), YC / YPbPr (250mV on
channel 1 and 1.125V on channels 2 and 3) or YC CV
(250mV on channels 1 and 3 and 1.125V on channel 2).
Sync Processing
6d
6d
6d
B
B
B
Y OUT
U OUT
V OUT
www.fairchildsemi.com
pp
, AC or DC coupled,
REV. 2C August 31, 2004

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FMS6408-10 Summary of contents

Page 1

... Y input controls three independent feedback clamps. All outputs are capable of driving 2V into either a single (150 Ω dual (75 Ω ) video load. The FMS6408 clamp levels can be factory programmed for YUV /RGB (250mV for all channels YPbPr (250mV on channel 1 and 1.125V on channels 2 and (250mV on channels 1 and 3 and 1 ...

Page 2

... Peaking Option All Channels 1 at 27MHz All Channels All Channels at 3.58MHz 18 µ s, 100 IRE Bar 130 Lines, 18 µ s, 100 IRE Bar 400kHz to 3.58MHz (NTSC) at 400kHz 1 400kHz at 1.0MHz at 1.0MHz 1.4V Output All Channels pp FMS6408 Min Typ Max Units 1 0 250 mV 1 ...

Page 3

... FMS6408MTC143_NL FMS6408-4 FMS6408MTC144_NL FMS6408-5 FMS6408MTC145_NL FMS6408-6 FMS6408MTC146_NL FMS6408-7 FMS6408MTC147_NL FMS6408-8 FMS6408MTC148_NL FMS6408-9 FMS6408MTC149_NL FMS6408-10 FMS6408MTC1410_NL FMS6408-11 FMS6408MTC1411_NL FMS6408-12 FMS6408MTC1412_NL Note These factory programming options allow a single die to be configured for multiple operating modes. Absolute Maximum Ratings Parameter V CC Analog and Digital ...

Page 4

... Mkr Frequency 2 Ref 400kHz 4th 5th 6th 400kHz Frequency (MHz) 2nd 3rd 4th 5th 6th Gain 6dB 28.75MHz -1dB BW 36.94MHz -3dB Frequency (MHz) REV. 2C August 31, 2004 FMS6408 ...

Page 5

... FMS6408 Pin Configuration INA FMS6408 13 INA OUT 14-pin BYPASS INA TSSOP GND OUT GND INB INB OUT V IN (A/ INB MUX Functional Description Introduction This product is a three channel monolithic continuous time video fi ...

Page 6

... U OUT 300k 10 GND 220uF 9 V OUT 10k 8 IN MUX (A/B) +5V 1 FMS6408 14L TSSOP OUT 75 12 BYPASS OUT 300kΩ GND OUT 10kΩ MUX (A/B) 75 Video Cables REV. 2C August 31, 2004 FMS6408 ...

Page 7

... FMS6408 Application Notes Output Drive Capability The FMS6408 can drive dual 75Ω loads where each load consists of a 75Ω resistor in series with a 75Ω termination resistor in the driven device. This presents a 150Ω load to the output so two similar loads in parallel look like 75Ω from the output to ground ...

Page 8

... PLANE (03) 0. (L1) MTC-14 SYMBOL MIN NOM MAX A – – 1.10 A1 0.05 – 0.15 A2 0.85 0.90 0.95 L 0.50 0.60 0.75 R 0.09 – – R1 0.09 – – b 0.19 – 0.30 b1 0.19 0.22 0.25 c 0.09 – 0.20 c1 0.09 – 0. – 1.0 REF aaa 0.10 bbb 0.10 ccc 0.05 ddd 0.20 e 0.65 BSC 02 12 REF 03 12 REF D 4.90 5.00 5.10 E1 4.30 4.40 4.50 E 6.4 BSC e 0.65 BSC N 14 REV. 2C August 31, 2004 FMS6408 ...

Page 9

... Part Number FMS6408 FMS6408MTC141_NL FMS6408 FMS6408MTC141X_NL FMS6408 FMS6408MTC143_NL FMS6408 FMS6408MTC143X_NL Temperature range for all parts: 0°C to +70°C. Contact Fairchild for ordering information regarding other clamping and peaking options. Refer to the Factory Programming Options Table on page 3 for a detailed description of available options. ...

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