ml6416 Fairchild Semiconductor, ml6416 Datasheet

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ml6416

Manufacturer Part Number
ml6416
Description
S-video Filter With Summed Composite Output, Sound Trap, And Group Delay Compensation
Manufacturer
Fairchild Semiconductor
Datasheet

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Features
• 7.1MHz Y and C filters, with CV out
• 14dB notch at 4.5MHz for sound trap
• 42dB stopband attenuation at 27MHz on Y, C, and CV
• Better than 1dB flatness to 4.5 MHz on Y, C, and CV
• RF Modulator output differential group delay between
• No external frequency select components or clocks
• 9ns group delay flatness on Y, C, and CV output
• AC coupled inputs and outputs
• 0.4% differential gain on Y, C and CV channels, 0.4º
• 0.8% total harmonic distortion on all channels
• DC restore with low tilt
Applications
• Cable Set-top Boxes
• Satellite Set-top Boxes
• DVD Players
Block Diagram
ML6416
S-Video Filter with Summed Composite Output,
Sound Trap, and Group Delay Compensation
400kHz and 3.58MHz is typically -170ns.
differential phase on Y, C and CV channels
CIN
YIN
1
4
4TH – ORDER
4TH – ORDER
REFERENCE,
SYNC STRIP,
AND TIMING
FILTER
FILTER
gM
gM
1V
1V
×2
+
+
Σ
GND
3
General Description
The ML6416 is a dual Y/C 4th-order Butterworth lowpass
video filter optimized for minimum overshoot and flat group
delay. The device also contains a summing circuit to gener-
ate filtered composite video, an audio trap and group delay
compensation circuit to notch-out audio, providing an area
for the addition of the FM audio carrier(s) and mimic the
group delay distortion introduced at the transmitter. The
group delay predistortion compensates for the nominal TV
receiver IF filter distortion.
In a typical application, the Y and C input signals from
DACs are AC coupled into the filter. Both channels have DC
restore circuitry to clamp the DC input levels during video
sync. The Y and C channels use a separate feedback clamp.
The clamp pulse is derived from the Y channel.
The outputs are AC coupled. The Y, C, CV, and modulator
outputs can drive 2V
load). The Y, C, CV, and notch channels have a gain of
approximately 2 (6dB) with 1V
×2
VCC
7
NOTCH,
GROUP
DELAY
×2
P-P
into a 150Ω load (1V
www.fairchildsemi.com
P-P
8
6
2
5
input levels.
YOUT
CVOUT
RF MOD
COUT
REV. 1.0.6 8/26/02
P-P
75Ω coax

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ml6416 Summary of contents

Page 1

... CIN 4 FILTER General Description The ML6416 is a dual Y/C 4th-order Butterworth lowpass video filter optimized for minimum overshoot and flat group delay. The device also contains a summing circuit to gener- ate filtered composite video, an audio trap and group delay compensation circuit to notch-out audio, providing an area for the addition of the FM audio carrier(s) and mimic the group delay distortion introduced at the transmitter ...

Page 2

... Clamping for all channels settles to less than 10mv within 5ms of a change in video input sources. In most applications the input coupling capacitors are 0.1µF. The Y and C input typically sinks 1µA during active video, 2 ML6416 8-Pin SOIC (S08 YIN YOUT ...

Page 3

... The RF modulator output is capable of driving a 600Ω load but is primarily intended to drive a modulator load. P-P 4.5MHz FM SOUND + 2 Σ VIDEO MODULATOR 220µF 75Ω 8 220µF 75Ω 6 220µF 75Ω 5 0.1µF 75Ω 3 ML6416 TO CHANNEL VIDEO CABLES YOUT 75Ω 75Ω CVOUT TO VCR 75Ω COUT 75Ω 3 ...

Page 4

... ML6416 Absolute Maximum Ratings Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. Parameter DC Supply Voltage Analog & Digital I/O Output Current (Continuous) CV Channel C and Y Channels ...

Page 5

... VOUT f = 3.58MHz (referenced to 400kHz) -205 -170 -135 f = 3.58MHz (referenced to 400kHz) -185 -150 -115 f = 3.58MHz (referenced to 400kHz) RFMOD Channel RFMOD Channel RFMOD Channel at 2.0MHz From 4.425MHz to 4.63MHz At 4.2MHz f = 200kHz 3MHz ML6416 = Operating Temperature Range A Min. Typ. Max. Units 35 0.4 1 OUT 0.4 1 OUT ...

Page 6

... ML6416 Mechanical Dimensions Inches (millimeters) 0.189 - 0.199 (4.80 - 5.06 0.017 - 0.027 (0.43 - 0.69) (4 PLACES) 0.012 - 0.020 0.055 - 0.061 (0.30 - 0.51) (1.40 - 1.55) SEATING PLANE 6 Package: S08 8-Pin SOIC 0.148 - 0.158 0.228 - 0.244 PIN 1 ID (3.76 - 4.01) (5.79 - 6.20) 0.050 BSC (1.27 BSC) 0.059 - 0.069 (1.49 - 1.75) 0° - 8° 0.015 - 0.035 0.004 - 0.010 (0.38 - 0.89) (0.10 - 0.26) PRODUCT SPECIFICATION 0.006 - 0.010 (0 ...

Page 7

... ML6416 Ordering Information Part Number ML6416CS 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. ...

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