器件名称: GS1881-ITA
功能描述: Monolithic Video Sync Separators
文件大小: 279.14KB 共14页
简 介:GS1881, GS4881, GS4981 Monolithic Video Sync Separators
DATA SHEET
FEATURES noise tolerant odd/even flag, back porch and horizontal sync pulse fast recovery from impulse noise excellent temperature stability 0.5 V to 4 Vpp input signal amplitude with 5 V supply well-controlled clamp discharge current and slicing level programmable horizontal scan rate (up to 130 kHz) composite, vertical, back porch, odd/even (GS1881, GS4881), horizontal (GS4981) outputs predictable vertical output pulse width with default trigger for non-standard video signals 5 V to 12 V supply voltage range pin compatible with LM1881 sync separator SELECTION CHART DESCRIPTION The GS1881, GS4881 and GS4981 are general purpose sync separators for use in a wide variety of video applications. The devices extract the timing information from composite video signals with scan rates from 15 to 130 kHz. The GS1881 is a drop-in replacement for the industry standard LM1881 with much improved performance. The device generates composite sync, vertical sync, back porch and odd/even field signals. The GS4881 is identical to the GS1881 but features a noise immune back porch pulse which maintains a constant H rate during the vertical interval. The GS4981 is identical to the GS4881, except that it provides horizontal sync in place of the odd/even output. All three devices feature a self-adjusting windowing circuit for noise immunity, which synchronizes to H rate. This windowing c i r c u i t d e t e r m i n e s t h……
