DS1876T+

Sensor And Detector Interfaces Overview

The DS1876T+ is an SFP controller with a dual laser diode driver (LDD) interface designed for dual transmitter modules. It operates within a voltage range of +2.85V to +3.9V and supports temperatures from -40°C to +95°C. The device features six analog monitor channels, including temperature, VCC, PMON1, BMON1, PMON2, and BMON2. It includes four 10-bit Delta-Sigma DAC outputs controlled by 72-entry lookup tables. Communication is handled via an I2C-compatible interface supporting up to 400 kHz.

Sensor And Detector Interfaces Feature Summary

• Meets all SFF-8472 transmitter control and monitoring requirements
• Integrates automatic power control and modulation control with eye safety functionality
• Includes comprehensive fault measurement system with maskable laser shutdown capability
• Provides flexible two-level password scheme for three levels of security

Sensor And Detector Interfaces Applications

• Dual Tx Video SFP Modules

Sensor And Detector Interfaces Procurement Notes

Verify the component authenticity through official Analog Devices or Maxim Integrated channels. Confirm the package type matches the required 28-pin TQFN specification. Ensure the operating environment stays within the specified temperature and voltage limits. Check for lead-free compliance if required by local regulations. Validate the memory map compatibility with existing system designs before integration.

Sensor And Detector Interfaces Selection Notes

Select this controller when designing dual-transmitter optical modules requiring integrated SFF-8472 compliance. It is suitable for applications needing precise laser power control via lookup tables. Consider its low supply current and compact package for space-constrained designs. Verify that the I2C interface speed meets the system's communication requirements. Ensure the external calibration inputs align with the module's monitoring needs.

Sensor And Detector Interfaces Part Context

The DS1876T+ belongs to the Maxim Integrated SFP controller family. It is specifically engineered for dual-laser transmitter applications in small form-factor pluggable modules. The device simplifies design by integrating control, monitoring, and safety features into a single chip. It replaces multiple discrete components, reducing board space and development complexity.

Sensor And Detector Interfaces Replacement Considerations

Check for direct pin-to-pin replacements within the same product family. Verify functional equivalence regarding SFF-8472 register mapping. Ensure thermal performance and package dimensions match the original design constraints.