
M
2.5Gbps Laser Driver with Automatic
Modulation Control
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Voltage at Any Pin...............................................................+7.0V
Supply Voltage (V
CC
)............................................-0.5V to +7.0V
Voltage at V
CR
, V
DR
, DATA+, DATA-,
CLOCK+, and CLOCK- Pins..................-0.5V to (V
CC
+ 0.5V)
Voltage at DATA+ and
DATA- Pins ..................................(V
DR
- 1.2V) to (V
DR
+ 1.2V)
Voltage at CLK+ and CLK- Pins......(V
CR
- 1.2V) to (V
CR
+ 1.2V)
Voltage at MODQ and MODN Pins ................0V to (V
CC
+ 1.5V)
Voltage at Any Other Pins (RTEN, EN0, EN1,
FAIL
,
MODMAX, BIASMAX, AMCSET, APCSET, MD_X, BIAS,
BIAS_X, BIASMON, MODMON)............-0.5V to (V
CC
+ 0.5V)
ELECTRICAL CHARACTERISTICS
(V
CC
= +3.14V to +3.6V or +4.5V to +5.5V, T
A
= -40°C to +85°C. Typical values are at V
CC
= +3.3V, I
BIAS
= 50mA, I
MOD
= 30mA,
T
A
= +25°C, unless otherwise noted.) (Notes 1, 2, 3)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Current into BIAS Pin ......................................-20mA to +150mA
Current into MODQ and MODN Pins..............-20mA to +100mA
Current into MD Pin...........................................-10mA to +10mA
Operating Junction Temperature .....................-55°C to +150°C
Storage Temperature Range.............................-55°C to +150°C
Continuous Power Dissipation (T
A
= +85°C)
32-Pin QFN (derate 21.2mW/°C above +85°C) ................1.3W
Lead Temperature (soldering, 10s).................................+300°C
Processing Temperature (die).........................................+400°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
68
MAX
85
UNITS
V
CC
= +3.14V to +3.6V (Note 4)
V
CC
= +4.5V to +5.5V,
typical current at V
CC
= +5.0V (Note 4)
Data and clock inputs (Figure 2)
Power-Supply Current
I
CC
69
90
mA
Differential Input Voltage
V
ID
0.2
1.6
V
CC
+
0.4V
60
Vp-p
Instantaneous Input Voltage
Data and clock inputs (Figure 2) (Note 5)
1.3
V
Single-Ended Input Resistance
Input to V
DR
, V
CR
f
≤
2.7GHz
2.7GHz < f < 4GHz
40
50
20
17
Input Return Loss, for Data+,
Data-, Clock+, and Clock-
RL
IN
dB
Bias-Current Setting Range
Bias Off Current
1
100
0.1
±15
mA
mA
%
mA
EN0, EN1 = low
I
BIAS
= 100mA
I
BIAS
= 1mA
Bias-Current Setting Accuracy
APC off
±0.1
Compliance Voltage for BIAS
and BIAS_X
(Note 5)
1
V
CC
+
0.4
V
I
BIAS
to I
BIASMON
Ratio
Modulation-Current Setting
Range
Modulation Off Current
48
m
A/mA
I
MOD
5
60
mA
EN0, EN1 = low
0.1
±15
mA
%
mA
I
MOD
= 60mA
I
MOD
= 5mA
Modulation-Current Setting
Accuracy
AMC off
±0.25
+3.14V
≤
V
CC
≤
+3.6V
1.8
V
CC
+
1.2
5.5
Compliance Voltage for MODQ
and MODN
(Note 5)
+4.5V
≤
V
CC
≤
+5.5V
1.8
V
I
MOD
to I
MODMON
Ratio
Compliance Voltage for
BIASMON and MODMON
Voltage at MD Pin
32
m
A/mA
(Note 5)
1.8
V
CC
+
0.4
V
V
MD
1.0
V