SI5324C-C-GMR

Overview

The SI5324C-C-GMR is a low-bandwidth, jitter-attenuating precision clock multiplier utilizing Skyworks Solutions' 3rd-generation DSPLL technology. It accepts two input clocks from 2 kHz to 710 MHz and generates two output clocks ranging from 2 kHz to 945 MHz, with select frequencies reaching 1.4 GHz. The device features an integrated loop filter with digitally programmable bandwidth between 4 Hz and 525 Hz. It supports configurable signal formats including LVPECL, LVDS, CML, and CMOS per output. Power consumption varies by configuration, with typical supply currents of 251 mA for dual LVPECL outputs at 622.08 MHz. The component operates on a single supply voltage of 1.8 V ±5%, 2.5 V ±10%, or 3.3 V ±10%.

Feature Summary

• Generates any frequency from 2 kHz to 945 MHz (select up to 1.4 GHz) from inputs of 2 kHz to 710 MHz
• Ultra-low jitter performance: 290 fs rms (12 kHz–20 MHz) and 320 fs rms (50 kHz–80 MHz)
• Digitally programmable loop bandwidth (4–525 Hz) eliminating external VCXO and filter components
• Supports hitless input clock switching with phase build-out and digital hold operation

Applications

• Broadcast video (3G/HD/SD-SDI, Genlock)
• Packet Optical Transport Systems (P-OTS), MSPP
• SONET OC-48/192/768 and SDH/STM-16/64/256 line cards
• GbE/10/40/100G Synchronous Ethernet (LAN/WAN)
• Data converter clocking and wireless base stations

Procurement Notes

Verify the ordering suffix 'GMR' corresponds to the tape-and-reel packaging format required for automated assembly. Confirm that the specific speed grade indicated by the 'C' designation meets the maximum frequency requirements of the target design. Ensure the procurement source provides documentation confirming RoHS compliance and Pb-free status as specified in the manufacturer's ordering guide.

Selection Notes

Select this component when sub-1 ps jitter performance is required with loop bandwidths between 4 Hz and 525 Hz. The SI5324C variant must be chosen based on the specific maximum output frequency needs, as different speed grades support different upper limits up to 1.4 GHz. Consider the power supply constraints, as LVPECL outputs require a nominal VDD of at least 2.5 V. Use the DSPLL sim utility to optimize PLL divider settings for minimal phase noise and power consumption.

Part Context

The SI5324 series comprises any-frequency precision clock multipliers designed for high-performance timing applications. The SI5324C is a specific speed grade within this family, offering distinct maximum frequency capabilities compared to other variants like the SI5324A or SI5324D. These devices are engineered to replace traditional PLL solutions requiring external voltage-controlled oscillators and analog filters, providing a highly integrated solution for jitter attenuation and frequency synthesis.

Replacement Considerations

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