M02094-12 Datasheet, PDF (18/46 Pages) M/A-COM Technology Solutions, Inc. – EPON FTTH modules

M02094-12
3.3 or 5 Volt VCSEL/FP Laser Driver IC for Applications to 2 Gbps
Rev V5
Table 2-1. Pin Definitions
Pin Number Pin Name
Pin equivalent load
V_CC
V_CC3
Function
Transmit Power Monitor. Connect to a resistor to GND.
The current through this pin is approximately the same as the photodiode current into
I_PIN. The current out of this pin is low pass filtered (no external filtering required).
This pin may be left open if the feature is not needed and the M02094 current
consumption will be reduced by the I_PIN current.
TxPwr _MON
11
TxPwr_MON
33 Ω
V_CC
12
APC_SET
APC_SET
V_CC3
Average Power Control, laser bias current adjustment. Connect to a resistor between
this pin and ground to set the bias current to the laser.
The APC loop will adjust the laser bias current to maintain a voltage at APC_SET of
approximately 1.3V. The current sourced from this pin is approximately the same as the
current into I_PIN.
V_CC
For CC_SEL low - Current input from monitor photodiode anode.
V_CC3
The APC loop will adjust the laser bias current to maintain a voltage at APC_SET of
approximately 1.3V and at this pin of approximately one V_GS.
For CC_SEL high - Current source for monitor photodiode cathode.
I_PIN
13
I_PIN
The APC loop will adjust the laser bias current to maintain a voltage at APC_SET of
approximately 1.3V and at this pin of approximately one V_GS below V_CC3.
33 Ω
18
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