PHY1071
VCSEL Driver / Post amp with Digital Diagnostics
The PHY1071-01 is a combined VCSEL driver and limiting amplifier with support for Digital Diagnostic Monitoring for use within small form factor modules for Fibre Channel applications. The transmitter integrates a high speed output stage with programmable bias and modulation currents, controlled through a 2-wire serial interface. The mean power control loop allows connection in both common cathode and common anode configurations. A Loss Of Signal (LOS) detector is included with detection based on either the receiver photo detector average current or received signal modulation amplitude. When used in digital diagnostics mode the integrated A/D converters measuring temperature, TX Bias, Supply Voltage, RX Signal Strength and Mean Power are read via a 2-wire serial interface. An external Microcontroller Unit (MCU) is used for calibrating real time diagnostic monitors and alarm generation.
Key features
- Multi-rate from 125Mbps to 2.125Gbps
- VCSEL driver output stage with 16mA max modulation drive and 20mA bias current
- Programmable mean power control loop
- Temperature compensated modulation current
- Integrated limiting amplifier with selectable swing CML output to reduce radiated emissions
- Programmable receiver low pass filter
- Integrated Loss Of Signal function
- Digital diagnostic mode compliant with SFF-8472 using an external MCU
- Stand-alone mode where device parameters are loaded from an external EEPROM
- -40°C to +85°C operating range
- 36pin 6mm x 6mm QFN package
- Eye safety logic
Applications
- SONET, Fibre Channel, GbE
- SFF and SFP Modules
