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參數(shù)資料
| 型號： | 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)： | 3/20頁 |
| 文件大?。?/td> | 537K |
| 代理商： | MC44BC375T |
Device Overview
MOTOROLA
MC44BC375/U/J/T Technical Data
For More Information On This Product,
Go to: www.freescale.com
3
2
Device Overview
Figure 2 shows a simplified block diagram of the MC44BC375U/J/Tdevice.
The MC44BC375U/J/T device has two main sections:
1. A modulator section which accepts audio and video inputs and modulates the VHF carrier.
2. A PLL section to synthesize the UHF/VHF output channel frequency (from an integrated
UHF oscillator, divided for VHF output)
The high frequency BICMOS technology permits integration of tank circuit and certain filtering functions.
Figure 2. MC44BC375/U/J/T Block Diagram
VCO & PLL
SECTION
8
1
2
31.25kHz
6
15
10
4
Channel
Select
CHS
-
PS1/2
Select
- PSS
VIDEO
SPLLFLT
PREEM
PLLFLT
XTAL
MODULATOR
SECTION
4Mhz
XCO
UHF
OSC.
13
LPF
Sound
Modulator
Video
Modulator
LPF
ALC
Sound
Oscillator
and FM
Modulator
Sound
PFD
Audio
Ampli
Prog.
Divider
7
AUDIO
3
LOP
11
VCCA
LPF
12
GND
5
GND
Peak
White Clip
31.25kHz
Clamp
Prog.
Divider
Phase
Comp.
Ref Divider
/128
PLL
75
9
16
Snd Freq
Select
- SFS
14
VHF
Divider
Test Mode
Divider
SFS
PSS
CHS
Prescaler
/ 8
TVOUT
Power
save
Psave/
LOP
TVOVCC
F
Freescale Semiconductor, Inc.
n
.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| MC44BC375U | 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 |
| MC44BC375UA | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PLL Tuned VHF Audio/Video High Integration IC |
| MC44BC375UAD | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:PLL Tuned VHF Audio/Video High Integration IC |
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