Microchip SY88432LMG-TR

Драйвер лазерного диода (оптоволокно)4,25 Гбит/с3 В ~ 3,6 В

Overview

The SY88432LMG-TR is a low power transceiver device that integrates a 4.25Gbps FP/DFB laser diode driver with a wide-sensitivity limiting post amplifier. This low power device is designed for use in fiber-optic optical modules for multi-rate applications up to 4.25Gbps.The SY88432LMG-TR transmitter section can output up to 60mA of modulation current with fast rise and fall times and is designed to be AC-coupled to the laser. The transmitter output stage incorporates a transmit disable feature and integrated 50Ω input impedance referenced to VCC.The receiver section’s limiting post amplifier connects to a typical trans-impedance amplifier (TIA) to amplify the incoming weak signal from the ROSA and outputs normalized received data in CML format at the output.The receiver offers a wide LOS (loss of signal) range and is able to detect input signals of as low as 5mVpp and as high as 80mVpp. A programmable loss-of-signal level set pin (LOSLVL) sets the sensitivity of the input amplitude detection. The LOS or SD (signal-detect) is user selectable and the LOS/SD signal can be fed back to the JAM input to implement the SQUELCH function that maintains output stability under a loss-of-signal condition. The receiver input should be AC-coupled.The SY88432LMG-TR interfaces with Micrel’s highly advanced optical module controller MIC3003 as an easy-to-use chipset solution for CSFP/SFP/CSFF/SFF optical module applications. The MIC3003 allows for both modulation and bias current control, with automatic power control (APC) and temperature compensation. The SY88432LMG-TR operates on a single 3.3V power supply and is available in a 24 lead, 4mm x 4mm QFN package.

Features

Applications

• CPU power supply
• Switching regulator
• Multiple-power supply system
• Digital audio player
• Digital TV
• Smartcard
• Industrial equipment
• DVD and CD-ROM drive
• Quick charge protocols
• Measurement and control euipment