参数资料
型号: MC44BS374T1AEFR2
厂商: Freescale Semiconductor
文件页数: 6/34页
文件大小: 0K
描述: IC AUDIO/VIDEO MODULATOR 16-SOIC
标准包装: 1
类型: NTSC/PAL 调制器
应用: 音频/视频,VCR,机顶盒
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
供应商设备封装: 16-SOIC N
包装: 剪切带 (CT)
其它名称: MC44BS374T1AEFR2CT
MC44BS374T1/374T1A Advance Information
Audio Characteristics
Figure 5. Typical Video Performance
14 Audio Characteristics
Unless otherwise stated: Vcc=5.0V, Ambient Temperture=25
o C, Video Input 1V
p-p, 10-step grayscale.
RF inputs/outputs into 75Ohm load.
Note:
Specifications only valid for envelope demodulation.
Table 6. Audio Performance Characteristics
Parameter
Test Conditions
Min
Typ
Max
Unit
Type
Picture-to-Sound ratio
PS bit set to 0
PS bit set to 1
9
13
12
16
15
19
dB
B
Audio modulation depth
Using specific pre-emphasis circuit,
audio input level=205mVrms-audio frequency=1kHz
FM modulation: Fs=5.5, 6 or 6.5MHz
100% modulation=+/-50kHz FM
deviation
76
80
84
%
B
FM modulation: NTSC Fs=4.5MHz
100% modulation=+/-25kHz FM
deviation
76
80
84
%
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
Depends on loop filter components
-2.0
-
+2.0
dB
C
Audio Distortion FM (THD
only)
at 1kHz, 100% modulation (
±50kHz)
No video
-
0.2
0.8
%
C
Audio S/N with Sync Buzz
FM
Ref 1Khz, 50% modulation (+/-25Khz)
EBU color bars Video signal,
using CCIR 468.2 weighting filter
50
54
-
dB
C
Note:
PAL Video Modulation Depth
74
76
78
80
82
84
86
88
90
471
521
571
621
671
721
771
821
871
Frequency (Mhz)
%
Typical
Maximum specification
Minimum specification
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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