SILICON LABS 571AHA000550DG

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 fixed-frequency crystal and a DSPLL clock synthesis IC to provide any-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.

• Any programmable output frequencies from 10 to 945 MHz and select frequencies to 1.4 GHz
• I²C serial interface
• 3rd generation DSPLL with superior jitter performance
• 3x better frequency stability than SAW-based oscillators
• Internal fixed crystal frequency ensures high reliability and low aging
• Available LVPECL, CMOS, LVDS, and CML outputs
• Industry-standard 5x7 mm package
• Pb-free/RoHS-compliant
• 1.8, 2.5, or 3.3 V supply

• SONET/SDH
• xDSL
• 10 GbE LAN/WAN
• ATE
• High performance instrumentation
• Low-jitter clock generation
• Optical modules
• Clock and data recovery