CY25100SXC-048T

Clock Generators, PLLs, Frequency Synthesizers Overview

The CY25100SXC-048T is a field and factory programmable spread spectrum clock generator designed for EMI reduction. It operates on a single 3.3 V supply within the commercial temperature range of 0 °C to 70 °C. The device synthesizes output frequencies from 3 MHz to 200 MHz using an integrated PLL, accepting input clocks or crystals between 8 MHz and 166 MHz. It features programmable center spread (±0.25% to ±2.5%) and down spread (-0.5% to -5.0%) with a nominal modulation frequency of 31.5 kHz. Packaged in an 8-pin SOIC, it includes internal load capacitor tuning arrays to eliminate external components.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Integrates a proprietary Phase-Locked Loop and Spread Spectrum Clock technology to synthesize and modulate input clock frequencies, significantly reducing radiated electromagnetic interference energy at fundamental and harmonic frequencies.
• Features a programmable crystal load capacitor tuning array that eliminates the need for external capacitors by matching the specific load capacitance requirements of the connected crystal.
• Provides configurable power management through selectable Power Down or Output Enable functions, allowing users to disable outputs or power down the oscillator and PLL circuits as needed.

Clock Generators, PLLs, Frequency Synthesizers Applications

• High-speed digital electronic systems requiring electromagnetic interference mitigation
• LCD driver ICs utilizing spread spectrum techniques for noise reduction
• Applications necessitating low cycle-to-cycle jitter clock generation

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the ordering code suffix against the manufacturer's official documentation to confirm the specific package type, temperature rating, and programming status. Ensure the required configuration parameters are correctly specified during the procurement process, as this component supports both field and factory programmability options.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when designing systems that require flexible clock synthesis with spread spectrum capabilities for EMI compliance. Consider the operating voltage, temperature range, and package constraints. Verify if field programmability via the CY3672 programmer is necessary or if a factory-programmed version better suits the production volume.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This part belongs to the CY25100 family of spread spectrum clock generators manufactured by Cypress Semiconductor Corporation. The series is engineered to replace multiple discrete oscillators and crystals, thereby saving board space and cost while providing customizable clock solutions for various high-speed digital applications.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Consult the manufacturer's datasheet for direct cross-reference information. Verify compatibility regarding pinout, voltage levels, and package dimensions before substituting with alternative clock generator models from other manufacturers.

Clock Generators, PLLs, Frequency Synthesizers FAQ

What is the function of the SSON# pin?

The SSON# pin serves as a digital control input to enable or disable the spread spectrum modulation. When driven LOW, modulation is active; when HIGH, modulation is stopped, and the output remains at the nominal synthesized frequency.

How does the device handle crystal load capacitance?

The CY25100 includes an internal programmable crystal load capacitor tuning array. Users can program the capacitance values at the XIN and XOUT pins to match the specific load capacitance of the crystal, removing the requirement for external load capacitors.

What is the difference between PD# and OE functions?

The PD# (Power Down) function powers down the oscillator and PLL circuits, pulling outputs weakly low. The OE (Output Enable) function controls the state of the SSCLK and REFCLK outputs without powering down the internal circuitry, enabling them when active.