M02069 Datasheet, PDF(13/44 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 (13/44 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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Functional Description

Table 2-1.

Number

Pin Definitions

Pin Name

Pin equivalent load

VCC

VCC3

Function

Safety circuit reset. Leave open for normal operation or add a capacitor to

ground to extend the reset time.

Connect to GND to disable window comparators at APCSET

RESET

190 â¦

VCC

DISDLY

190 â¦

Disable delay control. Connect to ground for normal operation.

In burst mode operation add a capacitor from this pin to ground to set the

maximum disable time. Disable times greater than this maximum will engage the

âslow-startâ circuitry.

VCC

MOD MON

MODMON

VCC3

Modulation Current Monitor. Connect to the corresponding pin on the M02088

or through a resistor to GND.

The current through this pin is typically 1/50th of the MODULATION current to

the laser when CCSEL is low or 1/25th the MODULATION current when CCSEL is

high.

This pin may be left open if the feature is not needed and the M02069 current

consumption will be reduced by 0.5mA typically.

190 â¦

02069-DSH-001-D

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