ICS1574B
Integrated
Circuit
Systems, Inc.
User Programmable Laser Engine Pixel Clock Generator
Description
Features
The ICS1574B is a very high performance monolithic phaselocked loop (PLL) frequency synthesizer designed for laser
engine applications. Utilizing ICS’s advanced CMOS mixedmode technology, the ICS1574B provides a low cost solution
for high-end pixel clock generation for a variety of laser engine product applications.
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Supports high resolution laser graphics. PLL/VCO
frequency re-programmable through serial interface
port to 400 MHz; allows less than ±1.5ns pixel clock
resolution.
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Laser pixel clock output is synchronized with
conditioned beam detect input
The pixel clock output (PCLK) frequency is derived from the
main clock by a programmable resettable divider.
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Ideal for laser printer, copier and FAX pixel clock
applications
Operating frequencies are fully programmable with direct
control provided for reference divider, feedback divider and
post-scaler.
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On-chip PLL with internal loop filter
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Single 5 volt power supply
NOTE: EOL for non-green parts to occur on 5/13/10
per PDN U-09-01.
Block Diagram
On-chip XTAL oscillator frequency reference
Resettable, programmable counter gives glitch-free
clock alignment
Low power CMOS technology
16-pin 0.150" SOIC package (Pb free available)
User re-programmable clock frequency supports
zoom and gray scale functions
Figure 1
1574B 8/10/09
