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參數(shù)資料
| 型號(hào)： | ML6415CS |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | S-Video Filter with Summed Composite Output, Sound Trap, and Group Delay Compensation |
| 中文描述： | CONTINUOUS TIME FILTER, BUTTERWORTH, LOWPASS, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁(yè)數(shù)： | 1/7頁(yè) |
| 文件大小： | 77K |
| 代理商： | ML6415CS |
www.fairchildsemi.com
REV. 2F May 2003
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
400kHz and 3.58MHz is typically -170ns.
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
differential phase on Y, C and CV channels
0.8% total harmonic distortion on all channels
DC restore with low tilt
Applications
Cable Set-top Boxes
Satellite Set-top Boxes
DVD Players
General Description
The ML6415 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
pp
into a 150
load). The Y, C, CV, and notch channels have a gain of
approximately 2 (6dB) with 1V
load (1V
pp
75
coax
pp
input levels.
Block Diagram
CIN
4TH – ORDER
FILTER
4
GND
3
YIN
VCC
7
1
YOUT
8
4TH – ORDER
FILTER
Σ
+
+
NOTCH,
GROUP
DELAY
SYNC STRIP,
REFERENCE,
AND TIMING
RF MOD
2
COUT
5
CVOUT
6
1V
gM
1V
gM
×
2
×
2
×
2
ML6415
S-Video Filter with Summed Composite Output,
Sound Trap, and Group Delay Compensation
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| ML64168 | 制造商:OKI 制造商全稱(chēng):OKI electronic componets 功能描述:4-Bit Microcontroller with Built-in RC Oscillation Type A/D Converter and LCD Driver |
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