DS1865T+T&R

Specialized ICS Overview

The DS1865T+T&R is a Passive Optical Network (PON) triplexer control and monitoring circuit manufactured by Analog Devices Inc./Maxim Integrated. It manages burst-mode transmitter and video receiver biasing for optical transceivers supporting GEPON, BPON, or GPON standards. The device integrates an Average Power Control (APC) loop with tracking-error compensation and a temperature-indexed lookup table for modulation current control. Key electrical parameters include a supply voltage range of 2.85V to 3.9V, a typical supply current of 10mA, and operation within a temperature range of -40°C to +95°C. It features six ADC channels, two 8-bit DAC outputs, and five digital I/O pins.

Specialized ICS Feature Summary

• Meets GEPON, BPON, and GPON timing requirements for burst-mode transmitters
• Integrates APC loop with tracking-error compensation and temperature-indexed lookup table for modulation current
• Includes six analog monitor channels (Temperature, VCC, MON1–MON4) and two 8-bit DAC outputs
• Features comprehensive fault management with maskable laser shutdown capability and two-level password access

Specialized ICS Applications

• Optical Triplexers with GEPON Transceiver
• Optical Triplexers with BPON Transceiver
• Optical Triplexers with GPON Transceiver

Specialized ICS Procurement Notes

Verify the specific ordering suffix 'T&R' indicates Tape & Reel packaging, distinct from the bulk tube variant. Confirm the component meets RoHS compliance standards as indicated by the '+' designation. Ensure the supplier provides valid traceability documentation for this Analog Devices/Maxim Integrated product.

Specialized ICS Selection Notes

Select the DS1865T+T&R when designing PON triplexer controllers requiring integrated APC and modulation current control. The T&R package is suitable for automated surface-mount assembly processes. Verify that the 28-TQFN footprint dimensions (5mm x 5mm) fit the target PCB layout constraints.

Specialized ICS Part Context

This component belongs to the DS1865 series of PON triplexer controllers. The 'T+' suffix denotes a lead-free/RoHS-compliant version in a 28-pin TQFN package. The 'T&R' suffix specifically identifies the Tape & Reel packaging format, distinguishing it from the standard tube-packaged DS1865T+.

Specialized ICS Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.