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Partname: | SI570 |
Description: | ANY-RATE I2C PROGRAMMABLE XO/VCXO |
Manufacturer: | Silicon Laboratories |
Datasheet: | PDF (315K). Click here to download *) |
The Si570 XO/Si571 VCXO utilizes Silicon Laboratories' advanced DSPLL circuitry to provide a low-jitter clock at any frequency. The Si570/Si571 are user-programmable to any output frequency from 10 to 945 MHz and select frequencies to 1400 MHz with <1 ppb resolution. The device is programmed via an I2C serial interface. Unlike traditional XO/VCXOs where a different crystal is required for each output frequency, the Si57x uses one fixedfrequency crystal and a DSPLL clock synthesis IC to provide any-rate frequency operation. This IC-based approach allows the crystal resonator to provide exceptional frequency stability and reliability. In addition, DSPLL clock synthesis provides superior supply noise rejection, simplifying the task of generating low-jitter clocks in noisy environments typically found in communication systems. |
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Click here to download SI570 Datasheet*) |
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