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參數(shù)資料
| 型號： | MC7805BD2TR4G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| 中文描述： | 5 V FIXED POSITIVE REGULATOR, PSSO2 |
| 封裝： | LEAD FREE, D2PAK-3 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大小： | 129K |
| 代理商： | MC7805BD2TR4G |
MC141622EVK
4
MOTOROLA
4.2 Clock Generator Compounding
The clock generator (MC1378P) provides the necessary reference oscillator and phase locks the clock to
the color subcarrier by inputting the composite video signal.
VC1 adjusts the horizontal VCO to synchronize the output of the burst gate (pin 5 on the MC1378P) with
the input video signal. VC2 adjusts the chroma VCO for maximum amplitude output from the clock buffer
(pin 1 on the MC14576).
VR3 adjusts pull–in of the chroma PLL filter. This is usually fixed to the center position. VR4 selects the
dc bias for the clock buffer output and is usually 2.25 V.
4.3 Video Amplifier Adjustment
On the video amplifier (MC14577), the gain is adjusted by VR1. This sets the input range
(3.0 Vp–p) of the A/D converter in MC141622FU.
VR2 is the clamp level adjustment. This adjusts the sync tip clamping of the input video signal to the
video amplifier.
4.4 Outside Interface
The outside interface should provide a composite video input signal to BNC1. The MC141622EVK pro-
vides Y/C separation and outputs the luminance from BNC2 and the color signal from BNC3. There is an
S output connector on this board for easy connection to instruments having an S input connector.
BNC4 and BNC5 are for the external input of each CLK and CLK(AD). However, when using these, it is
necessary to modify the board pattern; i.e., cut (J5, J6).
There is no filter for bandwidth limitations on this board beyond that imposed by the bandwidth limitations
of the MC14577 buffer amplifier. To minimize noise resulting from excessive bandwidth, the bandwidth of
input video signal should be limited to no more than one half of the clock frequency.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC7805BDT | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) 5V 1A Postive RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| MC7805BDTG | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) 5V 1A Postive RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| MC7805BDTG | 制造商:ON Semiconductor 功能描述:Linear Voltage Regulator IC |
| MC7805BDTRK | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) 5V 1A Postive RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| MC7805BDTRKG | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) 5V 1A Postive RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
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