M02066 Datasheet, PDF (6/20 Pages) M/A-COM Technology Solutions, Inc. – 3.3 Volt Laser Driver IC for Applications to 3 Gbps Data Sheet

2.0 Pin Description
2.1
Pin Descriptions
Table 2-1.
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Pin Descriptions (BCC+24)
Name
Function
CEN
DIS
GND
MON
FAIL
OCA
V_CC
BIAS
V_CC
OUT+
OUT-
GND_A
PD
C_MPC
GND
TC_SLOPE
TC_START
MOD_SET
OCA_SET
V_CC
D_IN
Clock enable input (TTL/CMOS). Set HIGH or not connected to use CLK inputs, LOW when not using CLK inputs
Bias and modulation output disable (TTL/CMOS). LOW for normal operation
Ground
Monitor output, connect a resistor between this pin and V_CC to monitor the sum of bias and modulation currents
Mean power control failure indicator (TTL/CMOS). Goes LOW when control loop is no longer able to maintain constant
current at PD
Over-current alarm (TTL/CMOS). Goes LOW when I_BIAS exceeds the preset bias current limit
Power supply
Laser bias current output
Power supply
Positive modulation current output. Sinks current when D_IN is HIGH
Negative modulation current output. Sinks current when D_IN is HIGH
Ground for output stage. (inductor to ground)
Monitor photo diode input. This input is connected to the monitor photodiode anode for automatic power control. A
resistor between this pin and ground sets the mean optical power
Mean power control loop dominant pole capacitor
Ground
Connecting a resistor between this pin and ground sets the temperature coefficient of I_MODSET (using the internal IC
temperature)
Secondary temperature coefficient of I_MOD. A resistor on this pin to ground sets the temperature at which the
temperature compensation starts
Modulation current set. Connect a resistor between this pin and ground to set
Over current alarm set. Connect a resistor between this pin and ground to set
Power supply
Positive data input (PECL). Self biased
02066-DSH-001-D
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