In booth 1947 at the Optical Fiber Communication conference & exposition (OFC 2015) in Los Angeles (24-26 March), M/A-COM Technology Solutions Inc of Lowell, MA, USA (which makes semiconductors, components and subassemblies for analog RF, microwave, millimeter-wave and photonic applications) is demonstrating the M02180, a new low-power, highly integrated, programmable burst-mode laser driver integrated with continuous-mode limiting amplifier and clock & data recovery (CDR) designed for passive optical networks (PON) ONU/OLT (optical network unit/optical line terminal) applications up to 12.5Gbps.
The M02180 laser driver can be configured in three selectable modes of operation. It offers open-loop operation with look-up tables, single closed-loop control using monitor photodiode feedback or MACOM's proprietary dual closed-loop operation for low-cost bi-directional optical subassembly (BOSA)-on-board applications. The device features a limiting amplifier with 6mV input sensitivity and integrated CDR with reference-free operation and can be bypassed to support non-standard data rates.
The M02180 includes an internal state machine controller and non-volatile memory with digital diagnostics, performing all the functions necessary for standalone operation without an external microcontroller. The internal state machine provides customers with the ability to acquire and scale industry-standard monitoring parameters in real time. The M02180 also has a high-voltage DC-DC controller for avalanche photodiode (APD) biasing with a built-in temperature-based look-up table stored in an EEPROM.
The M02180 provides low-power operation of less than 90mA (typical). The device also offers sleep modes, burst-off current reduction modes, and optional 2.5V power supply operation for further power reduction.
"This highly integrated device minimizes power consumption and external parts count, provides design flexibility and simplifies manufacturing processes, enabling our customers to develop the best in class 10G PON optical solutions," says Angus Lai, director of High-Performance Analog product marketing.
The M02180 is available in a low-cost 4.5mm x 4.5mm QFN package and supports industrial temperature operations. Device, evaluation board and reference design are sampling now.
