3.2Gbps, Low-Power, Compact,
SFP Laser Driver
ABSOLUTE MAXIMUM RATINGS
Power-Supply Voltage V
..................................-0.5V to +6.0V
Continuous Power Dissipation (T = +85°C)
CC
A
Voltage at IN+, IN-, DIS…..…………………-0.5V to (V + 0.5V)
Voltage at BC_MON, MODSET, BIASSET.............-0.5V to +3.0V
Voltage at OUT+, OUT-.……………………+0.5V to (V
Voltage at BIAS ............……………………+0.5V to (V
Current into BIAS, OUT+, OUT-......................-20mA to +150mA
Current into IN+, IN-......…………………………-20mA to +20mA
16-Pin Thin QFN (derate 25mW/°C above +85°C) .............2W
Operating Junction Temperature Range ..........-55°C to +150°C
Storage Temperature Range.............................-55°C to +150°C
Die Attach Temperature ..................................................+400°C
Lead Temperature (soldering, 10s) .................................+300°C
CC
+ 1.5V)
+ 0.5V)
CC
CC
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.
ELECTRICAL CHARACTERISTICS
(V
= +2.97V to +3.63V, T = -40°C to +85°C. Typical values are at V
= +3.3V, I
= 20mA, I = 30mA, T = +25°C, unless
MOD A
CC
A
CC
BIAS
otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Excludes the laser bias and modulation
currents (Note 2)
Power-Supply Current
I
22
35
mA
CC
I/O SPECIFICATIONS
Differential Input Voltage
V
V
= V
- V , Figure 1
0.2
2.4
V
ID
ID
IN+
IN-
P-P
V
0.6 ×
Common-Mode Input Voltage
V
INCM
V
CC
Differential Input Resistance
DIS Input Pullup Resistance
R
85
100
7.2
115
10.0
15
Ω
IN
R
4.7
kΩ
PULL
V
V
= V
CC
DIS
DIS
DIS Input Current
µA
= GND, V
= 3.3V, R
= 7.4kΩ
PULL
-450
CC
DIS Input High Voltage
DIS Input Low Voltage
BIAS GENERATOR
Bias Current Range
Bias Off-Current
V
2.0
1
V
V
IH
V
0.8
IL
I
Current into BIAS pin
Current into BIAS pin, DIS asserted high
100
100
95
mA
µA
BIAS
I
BIASOFF
5mA ≤ I
≤ 10mA
70
79
85
85
BIAS
BIASSET Current Gain
G
(Note 3)
A/A
BIAS
10mA ≤ I
≤ 100mA
91
BIAS
BIASSET Current Gain Stability
BIASSET Current Gain Linearity
10mA ≤ I
10mA ≤ I
≤ 100mA (Note 4)
≤ 100mA (Note 5)
-4.4
-2.3
+4
%
%
BIAS
+2.3
BIAS
During SFP module hot plugging;
see Figure 3 (Notes 5, 6)
Bias Overshoot
10
%
Bias-Current Monitor Gain
(Note 5)
13.7
|4|
|2.8|
|2.4|
mA/A
1mA ≤ I
5mA ≤ I
≤ 5mA
BIAS
BIAS
Bias-Current Monitor Gain
Stability (Notes 4, 5)
%
≤ 10mA
≤ 100mA
-7
-5
+7
+5
10mA ≤ I
BIAS
Current into OUT+, R = 15Ω,
L
5
5
60
85
V
and V
≥ 0.6V (DC-coupled)
OUT-
OUT+
Modulation Current Range
I
mA
P-P
MOD
Current into OUT+, R = 15Ω,
L
V
and V
≥ 2.0V (AC-coupled)
OUT-
OUT+
2
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