參數(shù)資料
型號(hào): ML6416
廠(chǎng)商: Fairchild Semiconductor Corporation
英文描述: S-Video Filter with Summed Composite Output, Sound Trap, and Group Delay Compensation
中文描述: S -視頻濾波器概括復(fù)合輸出,聲音陷阱,和群延遲補(bǔ)償
文件頁(yè)數(shù): 1/7頁(yè)
文件大小: 318K
代理商: ML6416
www.fairchildsemi.com
REV. 1.0.6 8/26/02
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 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
P-P
into a 150
load (1V
P-P
75
coax
load). The Y, C, CV, and notch channels have a gain of
approximately 2 (6dB) with 1V
P-P
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
ML6416
S-Video Filter with Summed Composite Output,
Sound Trap, and Group Delay Compensation
相關(guān)PDF資料
PDF描述
ML6416CS S-Video Filter with Summed Composite Output, Sound Trap, and Group Delay Compensation
ML6421 Triple Phase and Sinx/x Equalized, Low-Pass Video Filter(三相和Sinx/x相均衡的視頻低通濾波器)
ML6423 Dual S-Video Lowpass Filter with Phase and Sinx/x Equalization(相和Sinx/x相均衡的雙S-視頻低通濾波器)
ML6424 CCIR601 Video Lowpass Filter with Optional Sinx/x Correction(可選Sinx/x校正器的CCIR601視頻低通濾波器)
ML6425 CCIR601 Video Lowpass Filter with Optional Sinx/x Correction(可選Sinx/x校正器的CCIR601視頻低通濾波器)
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