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參數(shù)資料
| 型號： | MC44BC375TD |
| 廠商： | MOTOROLA INC |
| 元件分類： | 消費家電 |
| 英文描述： | PLL Tuned VHF Audio/ Video High Integration Modulator ICs |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO16 |
| 封裝： | SO-16 |
| 文件頁數(shù)： | 13/20頁 |
| 文件大?。?/td> | 537K |
| 代理商： | MC44BC375TD |
Modulator Functionality
MOTOROLA
MC44BC375/U/J/T Technical Data
For More Information On This Product,
Go to: www.freescale.com
13
The audio pre-emphasis circuit is a high-pass filter with an external capacitor C1 and an internal resistor
(100kOhms typical). The recommended capacitor value (750pF) is for M/N standards; time constant is
75
μ
s. It is 470pF for B/G standards (50
μ
s).
Audio bandwidth specification is for 50Hz to 15Khz range, with pre-emphasis circuit engaged. Without
this pre-emphasis circuit, it is possible to extend the audio bandwidth to the high frequencies as there is no
internal frequency limitation (stereo application).
12.8
PLL Section — Dividers
The reference divider is a fixed divide by 128 resulting in a reference frequency of 31.25Khz with a
4.0Mhz crystal. The 31.25Khz reference frequency is used for both UHF and Sound PLLs.
The prescaler is a fixed divide by 8 and is permanently engaged. The VHF divider is different for each of
the 3 versions.
The programmable divider’s division ratio is controlled by CHS pin voltage in order to get the following
VHF frequencies:
12.9
Selectable Pins
Pins CHS, PSS, SFS are internally pulled up to 5V.
Device
Channel
VHF divider
MC44BC375U
CH3 = 61.25Mhz
8
CH4 = 67.25Mhz
MC44BC375J
CH1 = 91.25Mhz
6
CH2 = 97.25Mhz
MC44BC375T
CH13 = 211.25Mhz
3
F
Freescale Semiconductor, Inc.
n
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| MC44BC375UADEVK | 功能描述:射頻開發(fā)工具 BC375UA(16 PIN) EVAL KIT RoHS:否 制造商:Taiyo Yuden 產(chǎn)品:Wireless Modules 類型:Wireless Audio 工具用于評估:WYSAAVDX7 頻率: 工作電源電壓:3.4 V to 5.5 V |
| MC44BC375UAEF | 功能描述:IC A-VHF MODULATOR 16-SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標(biāo)準(zhǔn)包裝:3,000 系列:OMNITUNE™ 類型:調(diào)諧器 應(yīng)用:移動電話，手機，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應(yīng)商設(shè)備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
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