Jitter Attenuators/Clock Cleaners
Silicon Labs’ any-frequency precision clocks provide jitter attenuation, frequency translation and clock distribution for high performance timing applications requiring sub 1 ps rms phase jitter performance. The devices accept multiple clock inputs at any frequency ranging from 2 kHz to 710 MHz. The devices generate multiple independent, synchronous clock outputs ranging from 2 kHz to 945 MHz and select frequencies to 1.4 GHz. Virtually any frequency translation across this operating range can be supported. Input/output frequencies are configurable via I2C, SPI or pin control. These devices leverage Silicon Labs’ proprietary 3rd-generation DSPLL® technology, which provides any-frequency synthesis and jitter attenuation in a highly integrated PLL solution that eliminates the need for external VCXO and loop filter components.
Download the Clock and Oscillator Selector Guide
A wide variety of 1-PLL solutions are available with a range of options for number of input/output clocks, maximum output frequency and control method (pin or I2C/SPI). These devices are ideal for 10G/40G/100G optical networking, Synchronous Ethernet, wireless infrastructure, cable/RF infrastructure, broadcast video, test and measurement, data acquisition and military applications. This family of products provides best-in-class jitter (0.3 ps rms phase jitter) and PSRR performance, immunity to board-level noise, hitless switching between reference inputs, short-term holdover and synchronous/free-running modes of operation. To simplify Optical Transport Networking (OTN) applications, these devices support gapped clock inputs.
For space-constrained Optical Transport Networking (OTN) applications requiring increased frequency flexibility and phase-independent clocks, 4-PLL solutions are available. These devices are the industry’s only 4-PLL jitter attenuating clocks, providing industry-leading PLL integration and simplified PCB layout and design. They also provide best-in-class jitter (0.4 ps rms phase jitter) and PSRR performance, making them ideal for OTU1, OTU2, OTU3 and OTU4 applications.
Low-jitter programmable clock multipliers provide flexible integer clock multiplication and clock distribution in high-performance timing applications requiring sub 1 ps jitter performance without jitter attenuation. The programmable clock multiplier devices accept multiple clock inputs ranging from 10 to 710 MHz and generate up to five independent, synchronous differential clock outputs ranging from 10 to 945 MHz and select frequencies to 1.4 GHz
The Si5315 provides all necessary line card clocking functions to support Synchronous Ethernet (SyncE) in GbE and 10GbE applications. In addition, the device supports T1/E1 clock generation and frequency translation among Ethernet, SONET/SDH and T1/E1 rates. The device supports two clock inputs ranging from 8kHz to 644.53 MHz and generates two frequency multiplied clock outputs ranging from 8 kHz to 644.53 MHz. The Si5315 is the industry’s only SyncE clock IC that supports 10GbE line encoding rates (161.13 MHz, 644.53 MHz) in addition to standard SONET/SDH and Ethernet frequencies.
Industry's Shortest Lead Times for Timing ICs
To help you get to market faster, Silicon Labs offers custom, factory-programmable clocks and oscillators. Samples generally ship in two weeks or less.
- Custom Clocks – Specify any combination of input/output frequencies, and build a custom, application-specific clock.
- Custom Oscillators – Specify a custom oscillator and build a part number in minutes.
- Clock Tree Design Services – Send your clock requirements, and Silicon Labs will return a custom clock tree proposal within 3 business days that maximizes system performance while minimizing BOM cost and complexity.