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參數(shù)資料
| 型號： | MC44BC375UEFR2 |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 5/20頁 |
| 文件大小： | 0K |
| 描述： | IC A-VHF MODULATOR 16-SOIC |
| 標準包裝： | 1 |
| 類型： | 調(diào)制器 |
| 應(yīng)用： | 機頂盒 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SOIC N |
| 包裝： | 標準包裝 |
| 其它名稱： | MC44BC375UEFR2DKR |
Modulator Functionality
MC44BC375/U/J/T Technical Data
The audio pre-emphasis circuit is a high-pass filter with an external capacitor C1 and an internal resistor
(100 kOhms typical). The recommended capacitor value (750 pF) is for M/N standards; time constant is
75
s. It is 470pF for B/G standards (50s).
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
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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| MC44BC375VAEFR2 | 制造商:Freescale Semiconductor 功能描述: |
| MC44BC380 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:VHF/ UHF ANTENNA BOOSTER/SPLITTER IC |
| MC44BC380EF | 功能描述:IC BOOSTER/SPLITTER ANT 8-SOIC RoHS:是 類別:RF/IF 和 RFID >> RF 功率分配器/分線器 系列:- 標準包裝:98 系列:- 插入損耗:- 頻率:40MHz ~ 880MHz 技術(shù)規(guī)格:- 尺寸/尺寸:* 封裝/外殼:- 包裝:管件 |
| MC44BC380EFR2 | 功能描述:IC BOOSTER/SPLITTER ANT 8-SOIC RoHS:是 類別:RF/IF 和 RFID >> RF 功率分配器/分線器 系列:- 標準包裝:98 系列:- 插入損耗:- 頻率:40MHz ~ 880MHz 技術(shù)規(guī)格:- 尺寸/尺寸:* 封裝/外殼:- 包裝:管件 |
| MC44BS373 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:MC44BS373 |
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