PHY1070 VCSEL Driver/Post-Amplifier with Digital Diagnostics

Overview

The PHY1070-01 is a combined VCSEL driver and limiter amplifier with digital diagnostic monitoring support for use in small form factor modules for Fiber Channel applications. The transmitter integrates a high speed output stage with programmable bias current and modulation current controlled via a 2-wire serial interface. The average power control loop allows connection in both common cathode and common anode configurations. A Loss of Signal (LOS) detector is included to detect based on either the receiver photodetector average current or the received signal modulation amplitude. When in digital diagnostic mode, the integrated A/D converter measures temperature, transmitter bias, supply voltage, received signal strength, and average power which are read via the 2-wire serial interface. An external microcontroller unit (MCU) is used for real-time monitoring of calibration and alarm occurrence diagnostics

Key Features

Multi-rate from 1Gbps to 4.25Gbps

VCSEL driver and modulator with maximum 16mA and 20mA bias current drive output stage

Programmable average power control loop

Temperature Compensated Modulation Current

Optional integrated limiting amplifier swings CML output to reduce radiated emissions

Programmable receive low-pass filter

Comprehensive LOS function

Digital diagnostic mode compliant with SFF-8472 using an external microcontroller

The parameters of the device in stand-alone mode are loaded from the external EEPROM

-40°C to +85°C operating temperature range

Available in 6mm x 6mm, 36-pin QFN package