12.5 Gbps Low Power Laser Driver and Limiting Amplifier with DC-DC Controller and EEPROM with Digital Diagnostics

 The M02193 is a low power, highly integrated, programmable laser driver and limiting amplifier intended for optical module applications to 12.5 Gbps. An internal state machine and EEPROM perform all functions necessary for standalone operation. The internal state machine will acquire and scale industry standard monitoring parameters in real time and make them available to a MAC or external host controller.

Internal EEPROM allows the M02193 to be re-calibrated multiple times and operate with or without external control from a microcontroller or MAC.

DC coupling of Laser to the Laser Driver minimizes power consumption, part count and pattern dependency. A high voltage DC-DC controller is included for APD biasing. The output voltage is controlled by an internal DAC and a temperature based look-up table stored in EEPROM.

Using the M02193 will minimize power consumption, parts count, provide design flexibility and simplify manufacturing processes. The laser driver can be configured to control a laser with either open loop look-up tables or closed loop control using monitor photodiode feedback (including MACOM’s proprietary Dual Closed Loop mode).