SI5319A-C-GMR

Overview

The SI5319A-C-GMR is a jitter-attenuating precision M/N clock multiplier from Skyworks Solutions. It accepts an input frequency of 2 kHz to 710 MHz and generates an output from 2 kHz to 945 MHz, with select frequencies up to 1.4 GHz. The device features ultra-low jitter generation as low as 0.3 ps rms (50 kHz–80 MHz) and meets OC-192 GR-253-CORE specifications. It operates on a single supply voltage of 1.71 V to 3.63 V, consuming typically 217 mA in LVPECL mode. The component is housed in a 6 x 6 mm 36-lead QFN package.

Feature Summary

• Generates any frequency from 2 kHz to 945 MHz and select frequencies to 1.4 GHz
• Ultra-low jitter generation as low as 0.3 ps rms (50 kHz–80 MHz)
• Integrated loop filter with digitally selectable bandwidth from 60 Hz to 8.4 kHz
• Supports I2C or SPI programmability with on-chip voltage regulator for 1.8 V, 2.5 V, or 3.3 V operation

Applications

• 10G/40G/100G OTN line cards
• SONET/SDH OC-48/STM-16 and OC-192/STM-64 line cards
• GbE/10GbE, 1/2/4/8/10GFC line cards
• ITU G.709 and custom FEC line cards
• Synchronous Ethernet

Procurement Notes

Verify the specific speed grade associated with the 'A' suffix against the manufacturer's ordering guide, as performance limits vary by grade. Confirm the presence of the -GMR suffix indicates tape-and-reel packaging. Ensure compatibility with the required supply voltage range of 1.71 V to 3.63 V during system design.

Selection Notes

Select this component for applications requiring sub-1 ps jitter performance and any-frequency synthesis. The DSPLL technology eliminates the need for external VCXO and loop filter components. Use the DSPLLsim utility to determine optimal PLL divider settings and loop bandwidth for specific input/output frequency combinations to minimize phase noise.

Part Context

The SI5319A-C-GMR belongs to the Si5319 family, which utilizes Skyworks' third-generation DSPLL technology. This family provides any-frequency synthesis and jitter attenuation in a highly integrated solution. The device supports various output formats including LVPECL, LVDS, CML, and CMOS, making it suitable for diverse high-performance timing applications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.