Silicon Labs Tackles High-Speed Transceiver Clocking with New High-Performance Oscillators

-- Si54x Ultra Series™ I2C-Programmable XOs Provide Superior Jitter Performance and Frequency Flexibility for 100/200/400G Applications --

AUSTIN, Texas, Dec. 11, 2017 — (PRNewswire) —   Silicon Labs (NASDAQ: SLAB) has introduced a new family of high-performance I2C-programmable crystal oscillators (XOs) delivering best-in-class jitter performance and frequency flexibility. With typical jitter performance as low as 95 femtoseconds (fs), the Si544/Si549 Ultra Seriesprogrammable XOs maximize jitter margin for clocking high-speed 28 Gbps and 56 Gbps transceivers used in 100/200/400G communications and data center applications. The devices are capable of generating any frequency from 200 kHz to 1.5 GHz with no frequency gaps and 4 parts-per-trillion (ppt) tuning resolution, enabling a single device to be used across a broad spectrum of applications.

Silicon Labs' Si54x Ultra Series crystal oscillators provide best-in-class jitter performance, frequency flexibility and programmability for 100/200/400G applications.

"Optical networks, hyperscale data centers and mobile fronthaul/backhaul networks are moving to higher speeds, increasing the need for ultra-low-jitter timing solutions," said James Wilson, Senior Marketing Director for Silicon Labs' timing products. "By choosing Silicon Labs' I2C-configurable Si54x Ultra Series oscillators, system designers will have peace of mind knowing that they are using the industry's most frequency flexible programmable XOs while maximizing SNR headroom, de-risking development and helping to ensure first-pass design success."

The Si544/Si549 XOs support up to four preset, pin-selectable start-up frequencies. After power-up, the device operating frequency can easily be changed via an I2C interface. This configuration flexibility enables a single oscillator to replace multiple single, dual and quad-frequency XOs and multiplexer (mux) devices with a single oscillator. The device can be powered from a single 1.8, 2.5 or 3.3 V supply, eliminating the need for different XO part numbers for different supply voltages. The Si54x XO's I2C interface supports update rates as high as 1 MHz (Fast-mode Plus), maximizing compatibility with a broad range of ASSPs, ASICs, SoCs and FPGAs.

The Si544/Si549 XOs are available in 3.2 mm x 5 mm and 5 x 7 mm packages, providing superior frequency flexibility in the same footprint as a standard, fixed-frequency XO. This compatibility enables hardware designers to prototype with an I2C-programmable XO and easily migrate to a single-frequency XO when the design transitions to production.

The Si54x XOs are purpose-built for 56 Gbps transceiver designs. These designs rely on pulse-amplitude modulation (PAM4) signaling for serial data transmission. PAM4 uses four-level signaling to increase the bit rate per channel while keeping the bandwidth constant. This tradeoff makes the design inherently more susceptible to noise. Using an ultra-low-jitter reference clock such as the Si544/Si549 devices maximizes signal-to-noise ratio (SNR) headroom, helps prevent bit-errors and helps maintain signal integrity.

The Si544/Si549 oscillators use Silicon Labs' advanced fourth-generation DSPLL® technology to provide an ultra-low-jitter clock source at any output frequency. The devices are programmable to any frequency from 200 kHz to 1.5 GHz with 4 ppt resolution. On-chip power supply regulation provides power supply noise rejection, enabling consistent, reliable low-jitter operation in noisy environments often found in high-speed networking and data centers. The Si544/Si549 XOs also provide flexible, reliable drop-in replacements for low-jitter surface acoustic wave (SAW)-based oscillators while offering superior frequency tolerance and temperature stability. The Si544/Si549 oscillators support all popular output formats including LVDS, LVPECL, HCSL, CML, CMOS and Dual CMOS.

In addition to the Si544/Si549 family, Silicon Labs is significantly expanding its XO/VCXO portfolio to include a broader array of package options. These complementary products include Si54x Ultra Series XOs in the industry-standard 5 mm x 7 mm package, Si59x general-purpose XO/VCXOs (3.2 mm x 5 mm) and Si51x general-purpose XO/VCXOs (2.5 mm x 3.2 mm). With this expanded product lineup, Silicon Labs can provide customers with a one-stop shop for high-performance oscillators.

Pricing and Availability
Samples and production quantities of the Si544/Si549 Ultra Series oscillators are available now. Silicon Labs offers two pricing levels for the Si54x family depending on the designer's jitter requirements. Pricing in 10,000 unit quantities begins at $8.36 (USD) for Si549 XOs (95 fs rms jitter) and at $6.69 (USD) for Si544 XOs (150 fs rms jitter). Silicon Labs' new Si5xxUC-EVB universal evaluation board, priced at $95 (USD MSRP), provides flexible, easy device evaluation. For more information about the Si54x Ultra Series family or to order samples and evaluation boards, visit www.silabs.com/ultra-series.

Silicon Labs
Silicon Labs (NASDAQ: SLAB) is a leading provider of silicon, software and solutions for a smarter, more connected world. Our award-winning technologies are shaping the future of the Internet of Things, Internet infrastructure, industrial automation, consumer and automotive markets. Our world-class engineering team creates products focused on performance, energy savings, connectivity and simplicity. www.silabs.com

Connect with Silicon Labs
Silicon Labs PR Contact: Dale Weisman +1-512-532-5871, dale.weisman@silabs.com 
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Cautionary Language
This press release may contain forward-looking statements based on Silicon Labs' current expectations. These forward-looking statements involve risks and uncertainties. A number of important factors could cause actual results to differ materially from those in the forward-looking statements. For a discussion of factors that could impact Silicon Labs' financial results and cause actual results to differ materially from those in the forward-looking statements, please refer to Silicon Labs' filings with the SEC. Silicon Labs disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Note to editors: Silicon Labs, Silicon Laboratories, the "S" symbol, the Silicon Laboratories logo and the Silicon Labs logo are trademarks of Silicon Laboratories Inc. All other product names noted herein may be trademarks of their respective holders.

 

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