James Wilson, Sr. Director of Marketing for Clock Products at Silicon Labs, said: "The growing demand for ultra-low jitter clock solutions for optical networks, very large data centers and mobile forecasters / backhaul networks is increasing. By choosing Silicon Labs The I2C configurable Si54x Ultra Series Oscillator allows system designers to easily work with the industry's most programmable, programmable XOs with maximum frequency flexibility and maximizes SNR margin to reduce development risk and ensure a successful design. "
The Si544 / Si549 XO supports up to four preset, pin-selectable start-up frequencies, and the device operating frequency can also be easily changed via the I2C interface after power-up This flexibility in configuration allows a single oscillator to replace multiple Frequency, dual-band or quad-band XO and mux devices, which can be powered from a single 1.8, 2.5 or 3.3V supply, eliminating the need to use different XO models for different supply voltages. The interface supports up to 1MHz (Fast-mode Plus) update rates and is fully compatible with a wide range of ASSPs, ASICs, SoCs, and FPGAs.
Supporting both 3.2mm x 5mm and 5mm x 7mm packages, the Si544 / Si549 XO offers better frequency flexibility than the standard fixed frequency XO in the same package, which allows hardware designers to implement I2C-programmable XOs Prototype design, and easily migrate to single-frequency XO as the design transitions to production.
The Si54x XO is specifically designed for 56Gbps transceivers designed to transmit serial data using Pulse Amplitude Modulation (PAM4) signals. PAM4 uses fourth-order signals to increase the bit rate for each channel while keeping the bandwidth constant. This trade- The underlying design is inherently more noise sensitive; maximizing the signal to noise ratio (SNR) margin by using ultralow jitter reference clocks such as Si544 / Si549 devices helps prevent bit errors and preserve signal integrity.
The Si544 / Si549 Oscillator features Silicon Labs' advanced 4th generation DSPLL® technology to provide an ultra-low jitter clock source at any output frequency, and is programmable at 4ppt at any frequency from 200kHz to 1.5GHz. On-chip power regulation Provides power supply noise rejection for consistent, reliable, low-jitter operation in common noisy environments in high-speed networks and data centers Si544 / Si549 XOs also provide the flexibility to reliably and reliably replace low-jitter surface acoustic wave (SAW) Oscillator while offering excellent frequency tolerance and temperature stability The Si544 / Si549 oscillator supports all popular output formats including LVDS, LVPECL, HCSL, CML, CMOS and Dual CMOS.
In addition to the Si544 / Si549 family of products, Silicon Labs is also expanding its XO / VCXO product family to include a wider range of package options including the Si54x Ultra Series XO in an industry standard 5mm x 7mm package, the Si59x Universal XO / VCXO (3.2mm x 5mm) and Si51x Universal XO / VCXO (2.5mm x 3.2mm). By extending the product line-up, Silicon Labs offers customers a one-stop shop for high-performance oscillators.
Price and delivery
Si544 / Si549 Ultra Series Oscillators are Available in Production Samples Silicon Labs offers two pricing levels for the Si54x family based on the designer's jitter requirements: The Si549 XO (95fs rms jitter) is priced at $ 8.36 at 10,000 quantities Starting in US dollars, the Si544 XO (150fs rms jitter) starts at $ 6.69 and, in addition, to help developers make flexible, easy device evaluations, Silicon Labs also introduced the Si5xxUC-EVB Universal Evaluation Board at a retail price of $ 95. For more information about the Si54x Ultra Series family or to order samples and evaluation boards, visit www.silabs.com/ultra-series.