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MC44BS373CAD 데이터시트(PDF) 16 Page - Motorola, Inc

부품명 MC44BS373CAD
상세설명  PLL-Tuned UHF and VHF Audio/Video High-Integration Modulator
PDF  52 Pages
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제조업체  MOTOROLA [Motorola, Inc]
홈페이지  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

MC44BS373CAD 데이터시트(HTML) 16 Page - Motorola, Inc

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MC44BS373CA Data Sheet
MOTOROLA
Audio Characteristics
Audio Characteristics
13 Audio Characteristics
Each of the characteristics listed in Table 22 is classified as one of the following types:
•
A—100% tested
•
B—100% correlation tested
•
C—Characterized on samples
•
D—Design parameter
See Section 14, “Characterization Measurement Conditions,” for each C-type parameter.
Unless otherwise stated, VCC = 5.0V, ambient temperature = 25°C, and video input is 1 Vp-p, with 10-step
grey scale and RF output into 75-
Ω load.
NOTE
Specifications are only valid for envelope demodulation.
Table 22. Audio Performance Characteristics 1
1 See Section 14, “Characterization Measurement Conditions.”
Parameter
Test Conditions
Minimum Typical Maximum Unit Type
Picture-to-sound ratio
PS bit set to 1
13
16
19
dB
B
PS bit set to 0
9
12
15
Audio modulation depth
Using specific pre-emphasis circuit,
audio input level = 205 mVrms, audio frequency = 1 kHz
AM modulation: SECAM Fs=6.5MHz
76
80
84
%
B
FM modulation: Fs=5.5, 6, or 6.5 MHz
100% modulation = ±50 kHz FM deviation
76
80
84
%
B
FM modulation: NTSC Fs=4.5MHz
100% modulation = ±25 kHz FM deviation
76
80
84
%
B
Audio input resistance
45
53
61
K
Ω
A
Audio frequency response Reference 0dB at 1kHz
using specified pre-emphasis circuit,
measured from 50 Hz to 15 kHz
(depends on loop filter components)
–2.0
—
+2.0
dB
C
Audio distortion FM
(THD only)
At 1 kHz, 100% modulation (
±50 kHz)
No video
—0.2
0.8
%
C
Audio distortion AM
(THD only)
At 1 kHz, 100% modulation
No video
—1.5
2.5
%
D
Audio S/N with sync
buzz FM
Ref 1 kHz, 50% modulation (±25 kHz)
EBU color bars video signal,
using CCIR 468-2 weighting filter
50
54
—
dB
C
Audio S/N with sync
buzz AM
Reference 1kHz, 85% modulation
Video input EBU color bar 75%
Audio BW 40Hz–15kHz,
using CCIR 468-2 weighting filter
45
50
—
dB
D



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