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ICS1522

Part Number	ICS1522
Manufacturer	Integrated Circuit Systems
Description	User-Programmable Video Clock Generator/ Line-Locked Clock Regenerator
Published	Dec 5, 2005
Detailed Description	Integrated Circuit Systems, Inc. ICS1522 User-ProgrammableVideo Clock Generator/ Line-Locked Clock Regenerator General...
Datasheet	ICS1522 PDF File

Overview

Integrated Circuit Systems, Inc.
ICS1522 User-ProgrammableVideo Clock Generator/ Line-Locked Clock Regenerator General Description The ICS1522 is a very high performance monolithic phaselocked loop (PLL) frequency synthesizer.
Utilizing ICS’s advanced CMOS mixed-mode technology, the ICS1522 provides a low-cost solution for high-end video clock generation where synchronization to an external video source is required.
The ICS1522 has differential video clock outputs (CLK+ and CLK- ) that are compatible with industry standard video DAC.
Operating frequencies are fully programmable with direct control provided for reference divider, feedback divider and postscaler.
Features • Serial programming: Feedback and reference divisors, VCO gain, phase comparator gain, relative phase and test modes.
Supports high-resolution graphics - Differential CLK out-puts to 230 MHz Eliminates need for multiple ECL output voltage controlled crystal oscillators and external components Fully-programmable synthesizer capability - not just a clock multiplier Line-locked clock generation capability; 15 - 100 kHz External feedback loop capability allows graphics system to be used as the feedback divisor with synchronous switchover to internal feedback Small footprint 24-pin SOIC Coarse and fine phase adjustment permits precise clocking in video recovery application • • • • • • • Applications Block Diagram • • • LCD Projector Systems Multimedia video line locking Genlock applications 1522RevF050697P ICS reserves the right to make changes in the device data identified in this publication without further notice.
ICS advises its customers to obtain the latest version of all device data to verify that any information being relied upon by the customer is current and accurate.
ICS1522 Overview The ICS1522 is ideally suited to provide the graphics system clock signals required by high-performance video DACs.
Fully programmable feedback and reference divider capability allow virtually any frequen...

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