M02069 Datasheet, PDF(32/44 Page) M/A-COM Technology Solutions, Inc. – 3.3 or 5 Volt VCSEL/FP Laser Driver IC for Applications to 4.3 Gbps

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M02069 Datasheet, PDF (32/44 Pages) M/A-COM Technology Solutions, Inc. – 3.3 or 5 Volt VCSEL/FP Laser Driver IC for Applications to 4.3 Gbps

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M02069 Data Sheet

3.3.13

Current Monitors

To facilitate complying with laser safety and DDMI1 requirements, output monitors are provided for transmit power

(TxPwrMON), bias (BIASMON), and modulation current (MODMON).

These outputs will source current proportional to the emitted optical power (TxPwrMON) the bias current (BIASMON)

and modulation current (MODMON). These outputs may be connected directly to the corresponding pins on the

M02088 module controller.

To use these pins without an M02088 they should be terminated with a resistor to ground that sets the desired full-

scale voltage (not to exceed 2.5V).

If the outputs of these monitors are not needed, TxPwrMON, BIASMON, and MODMON can all be left floating and the

chip current consumption will be reduced by the value of the monitor currents.

3.4

Laser Eye Safety

Using this laser driver in the manner described herein does not ensure that the resulting laser transmitter complies

with established standards such as IEC 825. Users must take the necessary precautions to ensure that eye safety

and other applicable standards are met. Note that determining and implementing the level of fault tolerance

required by the applications that this part is going into is the responsibility of the transmitter designer and manufac-

turer since the application of this device cannot be controlled by Mindspeed.

1 Digital Diagnostic Monitoring Interface for Optical Tranceivers, defined in SFF-8472.

Mindspeed Technologiesâ¢

02069-DSH-001-D

Mindspeed Proprietary and Confidential

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