M02069 Datasheet, PDF (21/44 Pages) M/A-COM Technology Solutions, Inc. – 3.3 or 5 Volt VCSEL/FP Laser Driver IC for Applications to 4.3 Gbps

3.0 Functional Description
3.1
Overview
The M02069 is a highly integrated laser driver intended for applications to 4.3 Gbps.
Many features are user-adjustable, including common anode or common cathode laser mode, the APC (automatic
power control) loop bias control (via a monitor photodiode), modulation current, temperature compensation control
of modulation current, and peaking adjustment. The part may be operated from a 3.3V or 5V supply.
For E-PON and other burst-mode applications, the part supports fast and accurate turn-on and turn-off of the laser
bias and modulation currents.
Safety circuitry is also included to provide a latched shut-down of laser bias and modulation current if a fault condi-
tion occurs. An internal VCC switch provides redundant shutdown when operating the device in common anode
configuration. An internal ground switch provides redundant shutdown when operating the device in common cath-
ode configuration.
Modulation, bias, and transmit power monitor current mirrors are provided for DDMI applications and allow moni-
toring without disturbing the analog signal path.
02069-DSH-001-D
Mindspeed Technologies™
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