SI5324D-C-GM

Overview

The Si5324D-C-GM is a low-bandwidth, jitter-attenuating precision clock multiplier utilizing Skyworks' 3rd-generation DSPLL technology. It accepts two input clocks from 2 kHz to 710 MHz and generates two independent output clocks ranging from 2 kHz to 945 MHz, with select frequencies reaching 1.4 GHz. The device features digitally programmable loop bandwidths between 4 Hz and 525 Hz and supports LVPECL, LVDS, CML, and CMOS output formats. It operates on a single supply of 1.8 V ±5%, 2.5 V ±10%, or 3.3 V ±10% within an ambient temperature range of -40 °C to +85 °C.

Feature Summary

• Ultra-low jitter performance: 290 fs rms (12 kHz–20 MHz) and 320 fs rms (50 kHz–80 MHz).
• Hitless input clock switching with phase build-out compliant with Telcordia GR-253-CORE.
• Integrated loop filter with selectable digital loop bandwidth from 4 Hz to 525 Hz.
• Supports ITU G.709 and custom FEC ratios including 255/238, 66/64, and 15/14.

Applications

• Broadcast video (3G/HD/SD-SDI, Genlock)
• Packet Optical Transport Systems (P-OTS), MSPP
• OTN/OTU-1/2/3/4 Asynchronous Demapping
• SONET OC-48/192/768, SDH/STM-16/64/256 line cards
• GbE/10/40/100G Synchronous Ethernet (LAN/WAN)

Procurement Notes

Verify the specific speed grade suffix (e.g., D) against the datasheet ordering guide to ensure compliance with required frequency limits and timing specifications. Confirm that the QFN-36 package land pattern matches the PCB design requirements. Ensure power supply decoupling capacitors are placed close to the VDD pins as shown in typical application circuits.

Selection Notes

Select this component for applications requiring sub-1 ps jitter performance with narrow loop bandwidths. Verify that the input clock frequencies fall within the 2 kHz to 710 MHz range. Check if the required output format (LVPECL, LVDS, CML, or CMOS) aligns with the system interface. Note that LVPECL outputs require a nominal VDD of at least 2.5 V.

Part Context

The Si5324 belongs to the Si53xx family of any-frequency jitter attenuating clock ICs. It is designed to eliminate the need for external VCXO and filter components by integrating the loop filter and PLL functions. The device provides flexible frequency translation capabilities suitable for high-performance timing applications across telecommunications and data converter domains.

Replacement Considerations

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