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參數(shù)資料
| 型號： | MC44BC374C |
| 廠商： | Motorola, Inc. |
| 英文描述： | PLL Tuned UHF and VHF Audio/Video High Integration Modulator |
| 中文描述： | 鎖相環(huán)調(diào)諧UHF和VHF音頻/視頻高集成調(diào)制器 |
| 文件頁數(shù)： | 11/30頁 |
| 文件大小： | 915K |
| 代理商： | MC44BC374C |
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Audio Characteristics
MOTOROLA
MC44BC373C/374C Technical Data
For More Information On This Product,
Go to: www.freescale.com
11
11
Audio Characteristics
Unless otherwise stated: V
cc
=5.0V, Ambient Temperture=25
o
C, Video Input 1V
p-p
, 10-step grayscale.
RF inputs/outputs into 75Ohm load. SPECIFICATIONS ONLY VALID FOR ENVELOPE
DEMODULATION.
Figure 5. Typical Performances
Parameter
Test Conditions
Min
Typ
Max
Unit
Type
Picture-to-Sound ratio
PS bit set to 0
PS bit set to 1
13
9
16
12
19
15
dB
B
Audio modulation depth
Using specific pre-emphasis circuit,
audio input level=205mVrms–audio frequency=1kHz
AM modulation: SECAM Fs=6.5MHz
—
80
—
%
B
FM modulation: Fs=5.5, 6or6.5MHz
100% modulation=±50kHz FM deviation
—
80
—
%
B
FM modulation: NTSC Fs=4.5MHz
100% modulation=±25kHz FM deviation
—
80
—
%
B
Audio input resistance
45
53
61
K
A
Audio Frequency response
Reference 0dB at 1kHz,
using specified pre-emphasis circuit,
measure from 50Hz to 15kHz
at 1kHz, 100% modulation (
±
50kHz)
No video
–2.5
—
+
2
dB
C
Audio Distortion FM (THD only)
—
0.4
2
%
C
Audio Distortion AM (THD only)
at 1kHz, 100% modulation
No video
—
1.5
2.5
%
D
Audio S/N with Sync Buzz FM
Ref 1Khz, 50% modulation (+/-25Khz)
EBU color bars Video signal,
using CCIR 468.2 weighting filter
48
53
—
dB
C
Audio S/N with Sync Buzz AM
Reference 1kHz, 85% modulation
Video input EBU color bar 75%
Audio BW 40Hz—15kHz
Weighting filter CCIR468-2
45
50
—
dB
D
Audio Signal to Noise
46
48
50
52
54
56
58
471 521 571 621 671 721 771 821 871
Frequency (Mhz)
d
Typical
Minimum specification
F
Freescale Semiconductor, Inc.
n
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC44BC374CD | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:PLL Tuned UHF and VHF Audio/Video High Integration Modulator |
| MC44BC374CDR2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PLL Tuned UHF and VHF Audio/Video High Integration Modulator |
| MC44BC374CDTB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC44BC374CDTBR2 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC44BC374CED | 制造商:Motorola Inc 功能描述: |
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