SI5017-D-GMR

Overview

The SI5017-D-GMR is a fully integrated clock and data recovery (CDR) IC with an embedded limiting amplifier, designed for high-speed serial communication systems operating at OC-48/STM-16 rates. Utilizing Silicon Laboratories DSPLL technology, it eliminates external loop filter components to ensure superior jitter performance and reduced board-level noise susceptibility. The device supports both reference-based and reference-less operation, accommodating data streams up to 2.7 Gbps when Forward Error Correction (FEC) is employed. It operates from a single 3.3 V supply across the industrial temperature range of –40 °C to 85 °C.

Feature Summary

• Integrates a high-speed limiting amplifier and CDR unit supporting OC-48/STM-16 and 2.7 Gbps FEC data rates
• Employs proprietary DSPLL technology to eliminate external loop filters and minimize jitter generation (typically 3.0 mUIrms)
• Provides differential CML outputs for recovered clock and data with 10 mVPP differential input sensitivity
• Includes programmable alarms for Loss-of-Signal (LOS), Loss-of-Lock (LOL), and Bit-Error-Rate (BER)

Applications

• SONET/SDH and ATM routers
• Add/drop multiplexers and digital cross connects
• Board-level serial links
• Optical transceiver modules
• SONET/SDH regenerators and test equipment

Procurement Notes

Verify component authenticity through authorized distribution channels due to potential counterfeit risks in the market. Confirm that the specific ordering suffix matches the required package configuration and tape-and-reel specifications. Ensure compliance with RoHS directives and check for any end-of-life notifications or obsolescence warnings prior to final procurement decisions.

Selection Notes

Select this component for applications requiring low-jitter clock recovery without external passive loop filter components. Ensure the design accommodates the 3.3 V supply voltage and the 5x5 mm MLP package footprint. Verify that the system can support the optional external reference clock frequency requirements if lock-to-reference functionality is desired for stable output clocks during alarm conditions.

Part Context

The SI5017 belongs to a family of high-performance clock and data recovery devices developed by Silicon Laboratories. It represents a specialized solution for SONET/SDH infrastructure, distinguishing itself through the integration of digital signal processing within the PLL architecture. This integration allows for compact designs in telecom and datacom networking equipment where space and power efficiency are critical constraints.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative CDRs based on pin compatibility, DSPLL technology availability, and adherence to Bellcore GR-253-CORE jitter specifications.