M02061_17 Datasheet, PDF (18/45 Pages) M/A-COM Technology Solutions, Inc. – 3.3 or 5 Volt Laser Driver

M02061-12/-21
3.3 or 5 Volt Laser Driver
Rev V6
Table 2-1.
4x4 mm
QFN24 Pin
Number
12
M02061 Pin Definitions and Descriptions (6 of 9)
Pin Name
Pin equivalent load
Function
APC_SET
V_CC
APC_SET
V_CC3
Average Power Control, laser bias current adjustment. Connect a resistor between
this pin and ground to set the bias current to the laser.
The APC loop will control the laser bias current to maintain a voltage of
approximately 1.3V at this pin. The current through this pin is approximately the
same as the current into I_PIN.
13
I_PIN
V_CC
Current input from monitor photodiode anode.
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. The voltage at this pin
will not exceed 1.6V in normal operation
I_PIN
30 Ω
14
IBIAS_OUT
V_CC
IBIAS_OUT
Laser bias current output.
Connect directly to laser cathode or at higher bit rates through a ferrite or a resistor
to isolate the capacitance of this pin from the modulation drive, (~2pF).
Maintain a voltage > 0.7V at this pin.
Connect 100 kΩ pullup resistor to VCC if pin 18 (SVCC) is used.
18
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
http://www.macom.com/support