- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄369516 > BT458LPJ135 Video DAC with Color Palette (RAMDAC) PDF資料下載
參數(shù)資料
| 型號： | BT458LPJ135 |
| 英文描述： | Video DAC with Color Palette (RAMDAC) |
| 中文描述： | 視頻DAC的調(diào)色板（的RAMDAC） |
| 文件頁數(shù)： | 31/60頁 |
| 文件大小： | 647K |
| 代理商： | BT458LPJ135 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁當(dāng)前第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁
Bt457/Bt458
3.0 PC Board Layout Considerations
125 MHz/135 MHz/165 MHz Monolithic CMOS 256 Color Palette RAMDAC
3.7 Analog Signal Interconnect
L45801 Rev. N
Conexant
3-7
3.7 Analog Signal Interconnect
The Bt457 and Bt458 should be located as close as possible to the output
connectors. This minimizes noise pickup and reflections caused by impedance
mismatch.
Analog outputs are susceptible to crosstalk from digital lines; digital traces
must not be routed under or adjacent to the analog output traces.
To maximize the high-frequency power supply rejection, the video output
signals should not overlay the analog power plane.
For maximum performance, the analog video output impedance, cable
impedance, and load impedance should be the same.
Analog output video edges exceeding the CRT monitor bandwidth can be
reflected, producing cable-length dependent ghosts. Simple pulse filters can
reduce high-frequency energy, reducing EMI and noise. The filter impedance
must match the line impedance.
3.8 Analog Output Protection
The Bt457 and Bt458 analog outputs should be protected against high-energy
discharges, such as those from monitor arc-over or from
“
hot-switching
”
AC-coupled monitors.
The diode protection circuit illustrated in
Figure 3-2
can prevent latchup under
severe discharge conditions without adversely degrading analog transition times.
The 1N4148/9 are low-capacitance, fast-switching diodes, which are available in
multiple-device packages (FSA250X or FSA270X) or surface-mountable pairs
(BAV99 or MMBD7001).
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| BT458LPJ165 | Video DAC with Color Palette (RAMDAC) |
| BT458LPJ80 | Video DAC with Color Palette (RAMDAC) |
| BT457KG125 | Video DAC with Color Palette (RAMDAC) |
| BT457KG80 | Video DAC with Color Palette (RAMDAC) |
| BT457KPJ110 | Video DAC with Color Palette (RAMDAC) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BT458LPJ165 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Video DAC with Color Palette (RAMDAC) |
| BT458LPJ80 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Video DAC with Color Palette (RAMDAC) |
| BT471KPJ35-695 | 制造商:BT 功能描述: |
| BT471KPJ80 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Video DAC with Color Palette (RAMDAC) |
| BT473KPJ110 | 制造商:BT 功能描述:Digital Analog Converter, Triple, 8 Bit, 68 Pin, PLCC |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。