ICS1523MT

Clock Generators, PLLs, Frequency Synthesizers Overview

The ICS1523MT is a low-cost, high-performance frequency generator and video clock synthesizer designed for general-purpose phase-controlled clock synthesis and line-locked or genlocked high-resolution video applications. Utilizing IDT's advanced low-voltage CMOS mixed-mode technology, it supports resolutions from VGA to beyond UXGA in video projectors and displays. The device features a wide input frequency range of 15.734 kHz to 100 MHz and provides differential PECL outputs up to 250 MHz and single-ended SSTL_3 outputs up to 150 MHz. It incorporates Dynamic Phase Adjust (DPA) for I2C-controlled phase adjustment relative to the input sync signal.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Dynamic Phase Adjust (DPA) allows I2C-controlled phase adjustment of output clocks down to 1/64 of a clock cycle.
• Dual output formats: Differential PECL outputs up to 250 MHz and single-ended SSTL_3 outputs up to 150 MHz.
• I2C programmable interface with full clock cycle control and double-buffered registers.
• Coast input pin disables the charge pump to idle at current speed during vertical blanking intervals.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Line-locked and genlocked high-resolution video applications
• Video projectors and displays supporting VGA to beyond UXGA resolutions
• Clocking analog-to-digital converters via half-speed secondary outputs

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific suffix 'MT' against the manufacturer's official datasheet to confirm package type, temperature range, and tape-and-reel specifications. Ensure compatibility with standard I2C bus programming interfaces and check for any required external loop filter components as software selectable options are available.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when phase-controlled clock synthesis is required for video signals. Consider the need for both differential and single-ended outputs. Verify that the input frequency falls within the 15.734 kHz to 100 MHz range. Check if the 24-pin SOIC package fits the board layout constraints.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The ICS1523 is part of a family of video clock synthesizers produced by IDT, which was acquired by Renesas Electronics Corporation. It serves as a specialized solution for timing generation in display and projection systems where precise phase alignment with input sync signals is critical.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Check for updated revisions of the ICS1523 series. Verify pinout compatibility if substituting with other IDT/Renesas video clock synthesizers. Confirm that alternative devices support the same DPA functionality and output voltage levels (PECL/SSTL_3).