• Generates frequencies from 2 kHz to 945 MHz, with select frequencies up to 1.4 GHz.
• Ultra-low jitter clock outputs with jitter generation as low as 0.3 psRMS.
• Integrated loop filter with selectable bandwidth from 60 Hz to 8.4 kHz.
• Complies with OC-192 GR-253-CORE jitter specifications.
• Supports ITU G.709 and custom FEC ratios.
• Manual or automatic input clock selection with hitless switching.
• Alarm outputs for LOL, LOS, and FOS.
• User-selectable output clock formats and digitally-controlled phase adjustment.
• Operates at 1.8, 2.5, or 3.3 V and is Pb-free, RoHS compliant.

• SONET/SDH OC-48/OC-192 line cards.
• GbE/10GbE, 1/2/4/8/10GFC line cards.
• ITU G.709 and custom FEC line cards.
• Wireless base stations, test and measurement equipment.
• Data converter clocking, DSLAM equipment, cable infrastructure.
• Optical modules, SONET/SDH + PDH clock synthesis.

Silicon Laboratories’ Any-Rate Precision Clocks offer clock multiplication, jitter attenuation, and clock distribution for high-performance timing applications. They accept multiple clock inputs from 2 kHz to 710 MHz and generate outputs from 2 kHz to 945 MHz, with select frequencies up to 1.4 GHz. These devices use DSPLL® technology for any-rate frequency synthesis and 0.3 psRMS jitter performance, eliminating the need for external VCXO and loop filter components.

DSPLL technology uses digital signal processing to move analog PLL functions into the digital domain, integrating components like VCO, loop filter, and phase detector on-chip, improving noise immunity and reducing BOM costs.

The Si53xx series offers industry-leading jitter performance of 0.3 psRMS, rivaling discrete analog PLL technology.

The Si53xx integrates all key PLL components, supporting up to four clock inputs and five differential outputs, eliminating the need for external muxes and buffers.

The Si53xx is reconfigurable via pins or I2C/SPI interface, simplifying design reuse and integrating system-level clock features like hitless switching and programmable output phase control.

DSPLLsim is a PC-based software utility for device selection and configuration, determining valid frequency plans and optimal PLL settings.