Low jitter clock generator targets broadcast video applications

Austin, Tex.—Silicon Laboratories Inc. has expanded its Any-Rate Precision Clock family with the Si5324 clock IC optimized for professional broadcast video applications.

According to Silicon Labs, the Si5324 replaces traditional multi-component video PLL products with a single clock IC while providing 80 percent lower jitter than competing products. The Si5324 can generate almost any output frequency from 2 kHz to 1.4 GHz from any input frequency ranging from 2 kHz to 710 MHz, simplifying synchronization in next generation multi-rate video equipment. Applications include video capture, conversion, editing, display, and distribution equipment that must be synchronized within video studios.

The Si5324 delivers jitter performance of 5 ps pk-pk, providing significant margin to all existing and emerging video standards including 3G-SDI (SMPTE 424M). By meeting these standards with considerable margin, the jitter budget that would otherwise be allocated to clock generation can be applied to other components in the system, simplifying component selection and design.

The Si5324 incorporates all PLL components, eliminating the need for multiple PLL ICs, external filters and VCXO components. Based on Silicon Labs' patented DSPLL technology, the Si5324 has a digitally programmable loop filter that supports loop bandwidths ranging from 4 to 525 Hz as well as a low phase noise internal VCO. The DSPLL technology enables the Si5324 to provide jitter filtering while also eliminating sensitive noise entry points between loop filter and VCXO components, reducing design complexity and simplifying layout. Any-rate capability makes it possible for the Si5324 to generate and synchronize all common HD video and audio reference frequencies without any component changes, allowing one design for multiple applications and simplifying design re-use.

Pricing: Between $17.95 and $57.20, depending on the selected output clock frequency range (A/B/C/D speed grades) in 1k quantities.
Availability: Samples and production quantities.

Silicon Laboratories Inc.,

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