ICS525-01RT

Clock Generators, PLLs, Frequency Synthesizers Overview

The ICS525-01RT is a user-configurable clock generator from the OSCaR family, designed to replace crystal oscillators. It accepts an input frequency of 2–50 MHz via clock or 5–27 MHz via crystal and generates output clocks up to 160 MHz using internal PLL dividers. The device operates on a single 3.0 V to 5.5 V supply with low jitter characteristics (±140 ps absolute). Configuration is hardware-based through grounded or floating select pins for reference, VCO, and output dividers, requiring no software or microcontroller. It is housed in a 28-pin SSOP package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Hardware-configurable frequency synthesis via R, V, and S divider pins without software
• Supports crystal inputs (5–27 MHz) or external clock inputs (2–50 MHz)
• Output frequencies up to 160 MHz at 5V / 100 MHz at 3.3V (Commercial grade)
• Low jitter performance: ±140 ps absolute, 45 ps one sigma

Clock Generators, PLLs, Frequency Synthesizers Applications

• Oscillator replacement in embedded systems
• Clock generation for digital logic and processors
• Frequency translation from standard crystals to specific system requirements

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the 'RT' suffix indicates Tape and Reel packaging as per the ordering information table. Confirm RoHS compliance status, noting that non-green parts had an End-of-Life date of May 13, 2010. Ensure the commercial temperature range (0°C to +70°C) meets application requirements, as industrial variants use different suffixes.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select the ICS525-01RT for outputs up to 160 MHz; choose the ICS525-02 variant if frequencies up to 250 MHz are required. Verify that the desired output frequency falls within the limits defined by the Output Divider Table for the specific supply voltage (3.3V vs 5V). Ensure the input source matches the supported ranges (Crystal: 5-27 MHz; Clock: 2-50 MHz).

Clock Generators, PLLs, Frequency Synthesizers Part Context

The ICS525-01RT belongs to the OSCaR (OSCillator Replacement) family manufactured by Integrated Device Technology (now Renesas). It serves as a flexible alternative to fixed-frequency crystal oscillators, allowing designers to generate precise clock signals from inexpensive fundamental mode crystals or existing clock sources through simple pin strapping.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

For applications requiring defined input-to-output timing relationships, consider the ICS527 series instead, as the ICS525 does not guarantee skew. For serial interface configuration capabilities, the ICS307 is a functional alternative.