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參數(shù)資料
| 型號(hào)： | MC44BS373CAFCR2 |
| 廠商： | Freescale Semiconductor |
| 文件頁(yè)數(shù)： | 8/52頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC MODULATOR AUD/VID U/V 20-QFN |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | NTSC/PAL 調(diào)制器 |
| 應(yīng)用： | 音頻/視頻，VCR，機(jī)頂盒 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-VQFN 裸露焊盤(pán) |
| 供應(yīng)商設(shè)備封裝： | 20-QFN 裸露焊盤(pán)（5x5） |
| 包裝： | 帶卷 (TR) |
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MC44BS373CA Data Sheet
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-
load.
NOTE
Specifications are only valid for envelope demodulation.
Table 22. Audio Performance Characteristics 1
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
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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC44BS373CAR2 | 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 |
| MC44BS373CR2 | 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 |
| MC44BS374 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:MC44BS374 |
| MC44BS374CA | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:SO16NB Package |
| MC44BS374CAD | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:CMOS Audio/Video RF Modulators |
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