ADN2872ACPZ

Overview

The ADN2872ACPZ is a 3.3 V dual-loop laser diode driver designed for advanced SFP and SFF modules compliant with SFF-8472 digital diagnostics. It features dual-loop control of average power and extinction ratio, automatically compensating for laser variations over temperature and aging. The device supports single-rate operation from 50 Mbps to 3.3 Gbps or multirate operation from 155 Mbps to 3.3 Gbps. Key electrical parameters include a bias current range of 2 mA to 100 mA and a modulation current range of 5 mA to 90 mA. Typical rise/fall time is 60 ps. It operates within a voltage setpoint or resistor setpoint control scheme.

Feature Summary

• Dual-loop control of average power and extinction ratio for automatic compensation of laser characteristics
• Supports single-rate operation from 50 Mbps to 3.3 Gbps and multirate operation from 155 Mbps to 3.3 Gbps
• Includes alarm scheme to avoid shutdown issues caused by system transients from various lasers
• Provides bias and modulation current monitoring along with laser FAIL alarm and automatic laser shutdown

Applications

• Multirate OC3 to OC48-FEC SFP/SFF modules
• 1x/2x/4x Fibre Channel SFP/SFF modules
• LX-4 modules
• DWDM/CWDM SFP modules
• 1GE SFP/SFF transceiver modules

Procurement Notes

Verify the specific package variant and revision level against the manufacturer's latest datasheet before procurement. Confirm compatibility with SFF-8472 digital diagnostics requirements for your target module design. Check for any recent product change notices that may affect pinout or electrical specifications. Ensure supply chain sources are authorized to guarantee component authenticity and traceability.

Selection Notes

Select this component when designing SFP or SFF transceivers requiring precise laser control across wide temperature ranges. It is suitable for applications needing support for multiple data rates up to 3.3 Gbps without extensive temperature calibration. Consider its integrated alarm and shutdown features for enhanced system reliability in fiber optic communication links.

Part Context

The ADN2872ACPZ belongs to Analog Devices' family of laser diode drivers optimized for small form-factor pluggable optical transceivers. It shares functional similarities with the ADN2870 but includes enhancements such as improved alarm schemes to prevent transient-induced shutdowns. This part is integral to high-speed optical networking solutions requiring robust laser management.

Replacement Considerations

The ADN2870ACPZ is a related component in the same family. Verify if the absence of the improved alarm scheme in the ADN2870 meets your system requirements. No other direct public substitutes are confirmed.