Datasheet

MAX3967A
270Mbps SFP LED Driver
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Supply Voltage at V
CC
, V
CCOUT
(
V
EE
,
V
EEOUT
= 0V) ..............................................-0.5V to +7V
Current into OUT+, OUT- ................................-40mA to +160mA
Differential Output Voltage (OUT+ to OUT-) .........-3.3V to +3.3V
Voltage at PB1, PB2, PB3,
IN+, IN-, OUT+, OUT-, TX_DISABLE......-0.5V to (V
CC
+ 0.5V)
Voltage at TCMIN, TCNOM, TC, MODSET, MON ....-0.5V to +2V
Continuous Power Dissipation (T
A
= +85°C)
24-Lead Thin QFN (derate 20.8mW/C°
above +85°C).............................................................1354mW
Operating Junction Temperature Range...........-40°C to +150°C
Die Attach Temperature...................................................+375°C
Storage Temperature Range .............................-50°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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.
DC ELECTRICAL CHARACTERISTICS
(Load as specified in Figure 1; V
CC
= +2.97V to +5.5V (at the V
CC
pins); V
EE
,
V
EEOUT
= 0V; T
A
= -40°C to +85°C, unless otherwise
noted. Temperature coefficients are referenced to T
A
= +25°C. Typical values are at V
CC
= +3.3V, T
A
= +25°C, unless otherwise
noted. Dice are tested at T
A
= +25°C only.)
PARAMETER
SYMBOL
CONDITIONS MIN
TYP
MAX
UNITS
Data Input High Voltage Referenced to V
CC
, DC-coupled input
-1.165 -0.880
V
Data Input Low Voltage Referenced to V
CC
, DC-coupled input
-1.810 -1.475
V
Supply Current I
CC
(Note 1)
30
39 mA
Input Current at IN+ or IN- -50 +50 µA
T
A
= -40°C
109
T
A
= +25°C 112
126
140
R
MODSET
= 698Ω
(Note 2)
T
A
= +85°C 126
140
155
T
A
= -40°C
15.3
T
A
= +25°C
17.5 19.8
25
R
MODSET
= 3.0kΩ
(Note 2)
T
A
= +85°C
21.9 24 28.7
T
A
= -40°C
65
74
89
T
A
= +25°C V
CC = 3.3V
79
86
89
Modulation Current
R
MODSET
= 1.0kΩ
(Note 2)
T
A
= +85°C
90
96
110
mA
PB1, PB2, PB3 = (open, open, open)
0.368 0.400 0.451
PB1, PB2, PB3 = (V
EE
, V
EE
, open)
0.575 0.625 0.696
Prebias Voltage
PB1, PB2, PB3 = (V
EE
, V
EE
, V
EE
)
0.848 0.925 1.026
V
Maximum tempco (TC open)
12,000
Nominal tempco (TC shorted to TCNOM)
3600
Temperature Coefficient of
Modulation Current
Minimum tempco (TC shorted to TCMIN)
2500
ppm/°C
Prebias Resistor
R
PREBIAS
66
78
90 Ω
TX_DISABLE Resistance Resistance to V
EE
(Note 3) 50
65
100 kΩ
TX_DISABLE High V
IH
2.0 V
TX_DISABLE Low V
IL
0.8 V
Monitor Gain
I
MON
/ I
MODSET
, V
MON
< 1.1V,
R
MODSET
= 1kΩ, TC = TCMIN
0.92
1
1.08
A/A
Note 1: R
MODSET
= 1kΩ. Excludes I
OUT
+ and I
OUT
-, TX_DISABLE high or low.
Note 2: TC connected to TCMIN, PB1 = PB2 = V
EE
, PB3 = open.
Note 3: The TX_DISABLE pin is internally pulled low. The driver is enabled when TX_DISABLE is left open.