M02067 datasheet(13/20 Pages) MA-COM

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M02067 -12/-13

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3.3 Volt Laser Driver IC for GbE and Fibre Channel to 2.1 Gbps

Rev V4

There are two safety features integrated into the MPC loop; an Over-Current Alarm and an MPC loop failure alarm.

The Over-Current Alarm (OCA) circuit limits the maximum bias current generated by the M02067. The bias current

limit is set by an external resistor to ground, ROCA. When this limit is exceeded the OCA pin is asserted LOW.

Figure 3-7 shows the maximum bias current limit vs ROCA.

Figure 3-6.

Bias Current vs. RMPCSET

Figure 3-7.

Maximum Bias Current vs. ROCA

100

120

5000

10000 15000

20000 25000 30000 35000

RMPCSET Ω

-40

Symbols shown indicate °C

100

10000

20000

30000

40000

ROCA (Ω )

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