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參數(shù)資料
| 型號： | MC44BC374 |
| 廠商： | Motorola, Inc. |
| 英文描述： | Multi-Standard or PAL/ NTSC Modulator with integrated antenna booster/splitter ICs |
| 中文描述： | 多制式或PAL / NTSC制式，集成天線的助推器調(diào)制器/分路器集成電路 |
| 文件頁數(shù)： | 2/24頁 |
| 文件大?。?/td> | 635K |
| 代理商： | MC44BC374 |
2
MC44BC373/374 Technical Data
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA
Features
1 Features
MC44BC373: Multi-Standard PAL/SECAM/NTSC with integrated booster splitter
MC44BC374: PAL/NTSC with integrated booster splitter
The channel is set by an on-chip high-speed I
2
C compatible bus receiver. A Phase-Locked Loop (PLL) tunes
the modulator over the full UHF range. The modulator incorporates a sound subcarrier oscillator and uses
a second PLL to derive 4
.
5, 5
.
5, 6
.
0, and 6
.
5MHz subcarrier frequencies. These frequencies are selected
using the bus.
The picture-to-sound ratio is adjusted using the bus. In addition, an on-chip video test pattern generator can
be switched ON using a 1kHz audio test signal.
Along with the modulator functions, an Antenna Booster/Splitter function is included.
These modulator versions are completely pin-to-pin and software compatible and all versions have the
following features.
No external varicaps diodes/inductors or tuned components
Channel 21–69 UHF operation
VHF range possible by internal dividers (30MHz to 450MHz)
Integrated on-chip programmable UHF oscillator
Extremely low external component count
High-speed read and write I
2
C-bus compatible (800kHz)
Fixed video modulation depth (80% in PAL and 90% in SECAM)
Peak White Clip disabled using the bus
Programmable picture/sound carrier ratio (12dB and 16dB)
Integrated on-chip programmable sound subcarrier oscillator
(4
.
5MHz to 6
.
5MHz)—No external varicaps
On-chip video test pattern generator with sound test signal (1kHz)
Low-power programmable modulator standby mode
(booster active)
Transient output inhibit during PLL Lock-up at Power-ON
Logical Output Port controlled by bus
Integrated Antenna Booster/Splitter (40MHz to 860MHz)
Custom masked versions with unique start-up settings possible
(no I
2
C bus programming required)
Extremely robust ESD protection, minimum 4kV, typical 6kV
F
Freescale Semiconductor, Inc.
n
.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC44BC374DTB | Multi-Standard or PAL/ NTSC Modulator with integrated antenna booster/splitter ICs |
| MC44BC374T1D | PLL Tuned PAL/NTSC UHF and VHF Audio/ Video High Integration Modulator IC |
| MC44BC374CDTB | PLL Tuned UHF and VHF Audio/Video High Integration Modulator |
| MC44BC374C | PLL Tuned UHF and VHF Audio/Video High Integration Modulator |
| MC44BC374CD | PLL Tuned UHF and VHF Audio/Video High Integration Modulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC44BC374C | 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 |
| 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 |
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