San Jose, Calif. Cypress Semiconductor Corp. has announced volume production of its CY25701 programmable spread spectrum crystal oscillator (SSXO) embedded with a high-frequency reference crystal in a single package. The company says the onboard crystal has been specified, designed, and tested to operate with Cypress's programmable Peak Reducing EMI Solutions (Premis) spread spectrum chip, which significantly reduces design and test time, and product development cost as compared to an external crystal solution.
By integrating frequency synthesis and spread spectrum clock functions into the device, the CY25701 runs efficiently with the onboard crystal, eliminating the need for higher-order crystals or crystal oscillators. Providing reliable operation between the reference crystal and the spread spectrum clock generator, the CY25701 SSXO offers a wide, programmable operating output frequency range from 10 to 166 MHz.
In addition, the frequency programmability of the SSXO enables designers to set a wide range of spread percentages for maximum electromagnetic interference (EMI) reduction. In order to meet regulatory agency electromagnetic compliance requirements, the programmable spread spectrum feature provides a wide range of down- or center-spread percentages (0.5 to 4.0%) for maximum EMI reduction. Depending on the application, the CY25701 provides up to 20 dB EMI reduction, based on a worst-case harmonic.
Applications include home office equipment, LCD projectors, network equipment, test and measurement, and digital embedded systems.
Available now in a 4-pin SMD package, the CY25701 is priced at $3.26 per unit in quantities of 1,000. This device will be supported by Cypress field application engineers and the company's global distribution network. A non-spread, pin-compatible version of the CY25701 will be available late in the fourth quarter.
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