MAX3869EHJ+

MAXIM INTEGRATED PRODUCTS  MAX3869EHJ+  芯片, 激光二极管驱动器

The is a +3.3V, 2.5Gbps SDH/SONET laser driver with current monitor and APC in 32 pin TQFP package. The complete, single +3.3V laser driver for SDH/SONET applications up to 2.5Gbps. The device accepts differential PECL data and clock inputs and provides bias and modulation currents for driving a laser. A synchronizing input latch can be used if a clock signal is available to reduce jitter. An automatic power control APC feedback loop is incorporated to maintain a constant average optical power over temperature and lifetime. The wide modulation current range of 5mA to 60mA and bias current of 1mA to 100mA are easy to program, making this product ideal for use in various SDH/SONET applications. The MAX3869 also provides enable control, two current monitors that are directly proportional to the laser bias and modulation currents and a failure-monitor output to indicate when the APC loop is unable to maintain the average optical power.

.

Supply voltage range is 3.14V to 5.5V

.

Operating temperature range from -40°C to 85°C

.

Supply current is 64mA at +3.3V

.

Bias current and modulation current monitors

.

Rise/fall time is 87ps

.

Automatic average power control with failure monitor

.

Complies with ANSI, ITU and bellcore SDH/SONET specifications

.

Enable control