SI5023-D-GMR

Overview

The Si5023-D-GMR is a fully integrated high-performance limiting amplifier and clock and data recovery (CDR) IC designed for high-speed serial communication systems. It derives timing information from serial inputs at OC-48/12/3, STM-16/4/1, Gigabit Ethernet rates, and supports 2.7 Gbps streams with forward error correction. The device operates from a 3.3 V supply over the industrial temperature range of –40 to 85 °C. Key electrical specifications include a typical jitter generation of 3.0 mUIrms and a differential input sensitivity of 10 mVpp. It utilizes Silicon Laboratories DSPLL technology to eliminate external loop filter components.

Feature Summary

• Integrates a high-speed limiting amplifier with a multi-rate CDR supporting up to 2.7 Gbps
• Utilizes DSPLL technology to minimize jitter generation and eliminate external loop filter components
• Supports reference clock operation or reference-less clock recovery modes
• Provides comprehensive alarm outputs including Loss-of-Signal (LOS), Loss-of-Lock (LOL), and Bit Error Rate (BER)
• Features externally adjustable data slicing level and loss-of-signal threshold

Applications

• SONET/SDH routers and add/drop multiplexers
• Digital cross connects and SONET/SDH regenerators
• Gigabit Ethernet interfaces
• Optical transceiver modules
• Board-level serial links and test equipment

Procurement Notes

Verify the ordering suffix 'D' corresponds to the specific tape-and-reel packaging configuration defined in the manufacturer's official documentation. Confirm that the component meets RoHS compliance standards as indicated by the 'GM' suffix. Ensure the procurement source provides valid traceability for the silicon manufacturer, Silicon Laboratories Inc., rather than relying on distributor generic descriptions.

Selection Notes

Select this component when designing systems requiring low jitter performance without the complexity of external analog loop filters. The device supports multiple data rates via RATESEL pin configuration, making it suitable for multi-standard applications. Consider the 5x5 mm QFN package dimensions for board space constraints. Verify that the application can accommodate the 3.3 V supply voltage and the specific thermal characteristics provided in the datasheet.

Part Context

The Si5023 is part of Silicon Laboratories' portfolio of high-speed clock and data recovery solutions. It represents a shift towards digital signal processing-based PLL implementations, replacing traditional analog designs. The device is engineered to meet stringent Bellcore GR-253-CORE and ITU-T G.958 jitter specifications for SONET/SDH equipment.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternative CDRs based on compatible interface voltages, pinout compatibility, and adherence to SONET/SDH jitter masks if direct substitution is required.