Si570 XO/Si571 VCXO Oscillators

Skyworks Solutions Inc. Si570 XO/Si571 VCXO Programmable Oscillators utilize the Skyworks advanced DSPLL® circuitry to provide a low-jitter clock that is programmable to any output frequency from 10MHz to 945MHz and select frequencies to 1400MHz with <1 ppb resolution. The Si570/Si571 is programmed via an I2C serial interface. The Si57x is unique in that it uses one fixed-frequency crystal and a DSPLL clock synthesis IC to provide any-frequency operation. This IC-based approach enables the crystal resonator to provide exceptional frequency stability and reliability. Additionally, DSPLL clock synthesis provides superior supply noise rejection, simplifying the task of generating low-jitter clocks in noisy environments typically found in communication systems.