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參數(shù)資料
| 型號(hào)： | MC44BC375T |
| 廠商： | Motorola, Inc. |
| 英文描述： | PLL Tuned VHF Audio/ Video High Integration Modulator ICs |
| 中文描述： | 甚高頻鎖相環(huán)調(diào)諧音頻/視頻調(diào)制器的高集成芯片 |
| 文件頁數(shù)： | 9/20頁 |
| 文件大?。?/td> | 537K |
| 代理商： | MC44BC375T |
MOTOROLA
MC44BC375/U/J/T Technical Data
For More Information On This Product,
Go to: www.freescale.com
9
No Video signal
No Audio signal
Measure in dBc, in reference to picture carrier (TVout_Ref), second and
third harmonic of channel frequency, resulting in the following spectrum.
Picture carrier
Out of Band Spurious
No Video signal
No Audio signal
Measure in dBuV spurious levels at 0.25, 0.5, 0.75 and 1.5 times channel
frequency, resulting in the following spectrum
Measure from 40Mhz to 1Ghz
.
In Band Spurious / 4Mhz Crystal Spurious
No Video signal
No Audio signal
Measure in dBc, in reference to picture carrier (TVout_Ref), spurious
levels falling into video bandwidth Fo+/-5Mhz (15.125Khz & 31.25Khz
from reference dividers and 4Mhz from crystal).
Video Bandwidth
No audio
Video: 600mVpk-pk sinusoidal signal
inserted on the black level of active video
area.
The Video signal is demodulated on the spectrum analyzer, and the peak
level of the 100Khz signal is measured as a reference. The frequency is
then swept from 100Khz to 5Mhz, and then the difference in dBc from the
100Khz reference level is measured.
Weighted Video Signal to Noise
Video: 100% White video signal - 1Vpk-
pk.
No Audio signal
This is measured using a Rohde &
Schwarz AMFS Demodulator in B/G
(using a CCIR Rec. 567 weighting
network, 100kHz to 5MHz band with
sound trap and envelope detection, and
a Rohde & Schwarz UAF Video
Analyzer.
The Video Analyzer measures the ratio between the amplitude of the
active area of the video signal (700mV) and the noise level in Vrms on a
video black level which is show below.
VideoS/N is calculated as 20 x log(700 /N) in dB
Unweighted Video Signal to Noise
Same as above with CCIR filter disabled. Same as above.
Video Differential Phase
Device and Signals Set-up
Measurement Set-up
3rd harmonic
3Fo
Fo
2Fo
2nd harmonic
Picture carrier
Fo*3/2
Fo/2
Fo/4
Fo*3/4
Fo
Spurious
N
noise level in Vrms
F
Freescale Semiconductor, Inc.
n
.
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| MC44BC375TD | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PLL Tuned VHF Audio/Video High Integration Modulator ICs |
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