- 您现在的位置：买卖IC网 > PDF目录10559 > EL4583CS (Intersil)IC VIDEO SYNC SEPARATOR 16-SOIC PDF资料下载
参数资料
| 型号： | EL4583CS |
| 厂商： | Intersil |
| 文件页数： | 9/10页 |
| 文件大小： | 0K |
| 描述： | IC VIDEO SYNC SEPARATOR 16-SOIC |
| 标准包装： | 47 |
| 类型： | 同步分离器 |
| 应用： | 多媒体显示器，测试设备 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 管件 |
8
FN7173.4
March 28, 2013
Description of Operation
A simplified block schematic is shown in Figure 1. The
following description is intended to provide the user with
sufficient information to understand the effects of the
external components and signal conditions on the outputs of
the integrated circuit.
The video signal is AC coupled to pin 4 via the capacitor C1,
nominally 0.1F. The clamp circuit A1 will prevent the input
signal on pin 4 going more negative than 1.5V, the value of
reference voltage VR1. Thus the sync tip, the most negative
part of the video waveform, will be clamped at 1.5V. The
current source I1, nominally 6A, charges the coupling
capacitor during the remaining portion of the H line,
approximately 58s for a 15.75kHz timebase. From I t = C V,
the video time-constant can be calculated. It is important to
note that the charge taken from the capacitor during video
must be replaced during the sync tip time, which is much
shorter, (ratio of x 12.5). The corresponding current to
restore the charge during sync will therefore be an order of
magnitude higher, and any resistance in series with CI will
cause sync tip crushing. For this reason, the internal series
resistance has been minimized and external high resistance
values in series with the input coupling capacitor should be
avoided. The user can exercise some control over the value
of the input time constant by introducing an external pull-up
resistance from pin 4 to the 5V supply. The maximum
voltage across the resistance will be VDD less 1.5V, for black
level. For a net discharge current greater than zero, the
resistance should be greater than 450k. This will have the
effect of increasing the time constant and reducing the
degree of picture tilt. The current source I1 directly tracks
reference current ITR and thus increases with scan rate
adjustment, as explained later.
FIGURE 4. STANDARD (NTSC INPUT) H. SYNC DETAIL
EL4583
相关PDF资料 |
PDF描述 |
|---|---|
| EL4583CN | IC VIDEO SYNC SEPARATOR 16-DIP |
| VI-J1Z-MY-F3 | CONVERTER MOD DC/DC 2V 20W |
| VI-J1Y-MX-F2 | CONVERTER MOD DC/DC 3.3V 49.5W |
| VI-J0Z-MY-F4 | CONVERTER MOD DC/DC 2V 20W |
| MAX1231BETI+ | IC ADC 12BIT 300KSPS 28-TQFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EL4583CS-T13 | 功能描述:IC SYNC SEPARATOR S-H 50% 16SOIC RoHS:否 类别:集成电路 (IC) >> 线性 - 视频处理 系列:- 产品变化通告:Product Discontinuation 07/Mar/2011 标准包装:3,000 系列:OMNITUNE™ 类型:调谐器 应用:移动电话，手机，视频显示器 安装类型:表面贴装 封装/外壳:65-WFBGA 供应商设备封装:PG-WFSGA-65 包装:带卷 (TR) 其它名称:SP000365064 |
| EL4583CS-T7 | 功能描述:IC VIDEO SYNC SEPARATOR 16-SOIC RoHS:否 类别:集成电路 (IC) >> 线性 - 视频处理 系列:- 产品变化通告:Product Discontinuation 07/Mar/2011 标准包装:3,000 系列:OMNITUNE™ 类型:调谐器 应用:移动电话，手机，视频显示器 安装类型:表面贴装 封装/外壳:65-WFBGA 供应商设备封装:PG-WFSGA-65 包装:带卷 (TR) 其它名称:SP000365064 |
| EL4583CSZ | 功能描述:视频 IC EL4583CSZ SYNC SEP BROADCAST QLTY RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
| EL4583CSZ | 制造商:Intersil Corporation 功能描述:IC TV/ VIDEO 16SOIC |
| EL4583CSZ-T13 | 功能描述:视频 IC EL4583CSZ SYNC SEP BROADCAST QLTY RoHS:否 制造商:Fairchild Semiconductor 工作电源电压:5 V 电源电流:80 mA 最大工作温度:+ 85 C 封装 / 箱体:TSSOP-28 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。