English
Language : 

M02067_17 Datasheet, PDF (7/20 Pages) M/A-COM Technology Solutions, Inc. – 3.3 Volt Laser Driver IC for GbE and Fibre Channel to 2.1 Gbps
◁
M02067 -12/-13
3.3 Volt Laser Driver IC for GbE and Fibre Channel to 2.1 Gbps
Rev V4
2.0 Pin Description
2.1
Pin Descriptions
Table 2-1. Pin Descriptions
Pin Number Pin Name
Function
1
ENA
Bias and modulation output enable (TTL/CMOS). Logic HIGH for normal operation.
2
DIS
Bias and modulation output disable (TTL/CMOS). Logic LOW for normal operation.
3
BIASMON Bias monitor. Connect a resistor between this pin and VCC to monitor bias current. Connect to VCC if not used.
4
MODMON Modulation monitor. Connect a resistor between this pin and VCC to monitor modulation current. Connect to
VCC if not used.
5
FAIL
Mean power control failure indicator (TTL/CMOS). Goes LOW when control loop is no longer able to maintain
constant current at PD.
6
OCA
Over-current alarm (TTL/CMOS). Goes LOW when IBIAS exceeds the preset bias current limit.
7
GND
Ground.
8
BIAS
Laser bias current output.
9
VCC
Power supply.
10
OUT+
Positive modulation current output. Sinks current when DIN is HIGH.
11
OUT-
Negative modulation current output. Sinks current when DIN is HIGH.
12
GNDA
Ground to output stage.
13
PD
Monitor photodiode input. This input is connected to the monitor photodiode anode for automatic power
control.
14
CMPC
Mean power control dominant pole capacitor. Connect to VCC via a capacitor.
15
GND
Ground.
16
TCSLOPE Connecting a resistor between this pin and ground sets the temperature coefficient of IMODSET.
17
TCSTART Secondary temperature coefficient of IMOD. A resistor on this pin to ground sets the threshold temperature at
which compensation starts.
18
MODSET Modulation current set. Connect a resistor between this pin and ground to set.
19
OCASET Over-current alarm set. Connect a resistor between this pin and ground to set.
20
VCC
Power supply.
21
7
DIN
Positive data input (PECL). Self biased.
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
 ▷