SI515

Si515 VOLTAGE-CONTROLLED CRYSTAL OSCILLATOR (VCXO) 100 kHZ TO 250 MHZ Features  Supports any frequency from  Optional integrated 1:2 CMOS 100 kHz to 250 MHz fanout buffer  Low-jitter operation  3.3 and 2.5 V supply options  Short lead times: <2 weeks  Industry-standard 3.2 x 5.0 mm  AT-cut fundamental mode crystal and 5 x 7 mm package/pinouts ensures high reliability/low aging  Pb-free/RoHS-compliant  High power supply noise rejection  Selectable Kv (60, 90, 120,  1% control voltage linearity 150 ppm/V)  Available CMOS, LVPECL, LVDS, and HCSL outputs Applications  SONET/SDH/OTN  PON  Low Jitter PLLs  xDSL Description  Broadcast video  Telecom  Switches/routers  FPGA/ASIC clock generation The Si515 VCXO utilizes Silicon Laboratories' advanced PLL technology to provide any frequency from 100 kHz to 250 MHz. Unlike a traditional VCXO where a different crystal is required for each output frequency, the Si515 uses one fixed crystal and Silicon Labs’ proprietary synthesizer to generate any frequency across this range. This IC-based approach allows the crystal resonator to provide enhanced reliability, improved mechanical robustness, and excellent stability. In addition, this solution provides superior control voltage linearity and supply noise rejection, improving PLL stability and simplifying low jitter PLL design in noisy environments. The Si515 is factory-configurable for a wide variety of user specifications, including frequency, supply v...