SI5023-BM

Overview

The Si5023-BM is a multi-rate SONET/SDH Clock and Data Recovery (CDR) IC with an integrated limiting amplifier, manufactured by Silicon Laboratories. It operates from a 3.3 V supply over the industrial temperature range of –40 to 85 °C. The device supports data rates up to 2.7 Gbps for OC-48/STM-16 applications employing Forward Error Correction (FEC), as well as OC-12, OC-3, STM-4, STM-1, and Gigabit Ethernet standards. Key electrical parameters include a typical jitter generation of 3.0 mUIrms, a differential input sensitivity of 10 mVpp, and a maximum power dissipation of 528 mW at nominal conditions.

Feature Summary

• Integrates a high-speed limiting amplifier with a DSPLL-based CDR unit supporting rates up to 2.7 Gbps.
• Supports multi-rate operation for OC-48/12/3, STM-16/4/1, and Gigabit Ethernet via RATESEL configuration.
• Features low jitter generation (typical 3.0 mUIrms) and eliminates external loop filter components.
• Provides comprehensive alarm outputs including Loss-of-Signal (LOS), Loss-of-Lock (LOL), and Bit Error Rate (BER).

Applications

• SONET/SDH routers and add/drop multiplexers
• Digital cross-connect systems
• Gigabit Ethernet interfaces
• Optical transceiver modules
• SONET/SDH test equipment and regenerators

Procurement Notes

Verify that the specific ordering suffix '-BM' corresponds to the required package type and tape/reel configuration as defined in the manufacturer's official ordering guide. Confirm that the 3.3 V supply requirement aligns with the system design, distinguishing it from the 2.5 V Si5022 variant. Ensure compliance with the specified industrial temperature range of –40 to 85 °C for the intended application environment.

Selection Notes

Select the Si5023-BM when a 3.3 V supply voltage is mandated by the system architecture. This model is appropriate for designs requiring support for FEC-enabled OC-48 streams up to 2.7 Gbps. Designers must account for the 5 x 5 mm footprint and ensure proper thermal management, as power dissipation can reach approximately 528 mW under nominal operating conditions.

Part Context

The Si5023-BM belongs to the Si5022/Si5023 family of multi-rate CDR devices. The primary distinction between the Si5022 and Si5023 models is the operating supply voltage: the Si5022 utilizes a 2.5 V supply, while the Si5023 requires a 3.3 V supply. Both variants share identical functional capabilities, pinouts, and performance characteristics regarding data rate support and jitter performance.

Replacement Considerations

The Si5022-BM serves as a direct functional substitute if the system design permits a reduction in supply voltage from 3.3 V to 2.5 V. No other cross-model replacements are documented in the provided source material.