MAX3967A 规格书

lVI/JXI/VI [MAXIM MAX3967A N, TX WBLE [VI/JXI/VI
General Description
The MAX3967A is a programmable LED driver for fiber
optic transmitters operating at data rates up to
270Mbps. The circuit contains a high-speed current dri-
ver with programmable temperature coefficient (temp-
co), adjustments for LED prebias voltage, and a disable
feature. The circuit accepts PECL data inputs, and
operates from a single +2.97V to +5.5V power supply.
The SFP LED driver can switch up to 100mA into typical
high-speed light-emitting diodes. As temperature
increases, the device’s modulation current increases
with a tempco that is programmable from 2500ppm/°C
to 12,000ppm/°C. The modulation current is pro-
grammed with a single external resistor.
The MAX3967A’s LED prebias voltage is programmable
from 400mV to 925mV. The prebias circuit produces
peaking current, which improves the LED switching
speed.
Complementary current outputs help to maintain a con-
stant supply current, reducing EMI and supply noise
generated by the transmitter module. The MAX3967A is
available in die form, or in a 4mm x 4mm, 24-pin thin
QFN package.
Applications
Multimode LED Transmitters
Fast Ethernet/FDDI
155Mbps LAN ATM Transceivers
ESCON Receivers
SFP Transceivers
Features
♦TX_DISABLE for SFP Compatibility
♦Single +2.97V to +5.5V Power Supply
♦Adjustable Temperature Compensation
♦Adjustable Modulation Current
♦Complementary Output Reduces Supply Noise
♦Programmable LED Prebias Voltage
♦Available in 24-Pin Thin QFN or Die
MAX3967A
270Mbps SFP LED Driver
________________________________________________________________ Maxim Integrated Products 1
TOP VIEW
THE EXPOSED PAD MUST BE CONNECTED TO GROUND FOR
PROPER THERMAL AND ELECTRICAL PERFORMANCE
MAX3967A
THIN QFN (4mm x 4mm)
TCNOM
123 456
7
8
9
10
11
12
131415161718
19
20
21
22
23
24
TC
PB1
PB2
PB3
VEEOUT
OUT+
OUT+
OUT-
N.C.
VCCOUT
VCCOUT
VCC
N.C.
MON
MODSET
IN-
IN+
VCC
VEE
TX_DISABLE
TCMIN VEEOUT
OUT-
Pin Configuration
19-3629; Rev 0; 3/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Ordering Information
PART TEMP RANGE PIN-PACKAGE
MAX3967AETG -40°C to +85°C 24 Thin QFN
MAX3967AE/D -40°C to +85°C Dice*
Typical Operating Circuits appear at end of data sheet.
*Dice are tested and guaranteed only at TA= +25°C.
[VI/JXIIVI
MAX3967A
270Mbps SFP LED Driver
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Supply Voltage at VCC, VCCOUT
(VEE, VEEOUT = 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 (VCC + 0.5V)
Voltage at TCMIN, TCNOM, TC, MODSET, MON ....-0.5V to +2V
Continuous Power Dissipation (TA= +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; VCC = +2.97V to +5.5V (at the VCC pins); VEE, VEEOUT = 0V; TA= -40°C to +85°C, unless otherwise
noted. Temperature coefficients are referenced to TA= +25°C. Typical values are at VCC = +3.3V, TA= +25°C, unless otherwise
noted. Dice are tested at TA= +25°C only.)
PARAMETER
SYMBOL
CONDITIONS MIN
TYP
MAX
UNITS
Data Input High Voltage Referenced to VCC, DC-coupled input
-1.165 -0.880
V
Data Input Low Voltage Referenced to VCC, DC-coupled input
-1.810 -1.475
V
Supply Current ICC (Note 1)
30
39 mA
Input Current at IN+ or IN- -50 +50 µA
TA = -40°C
109
TA = +25°C 112
126
140
RMODSET = 698Ω
(Note 2) TA = +85°C 126
140
155
TA = -40°C
15.3
TA = +25°C
17.5 19.8
25
RMODSET = 3.0kΩ
(Note 2)
TA = +85°C
21.9 24 28.7
TA = -40°C
65
74
89
TA = +25°C VCC = 3.3V
79
86
89
Modulation Current
RMODSET = 1.0kΩ
(Note 2)
TA = +85°C
90
96
110
mA
PB1, PB2, PB3 = (open, open, open)
0.368 0.400 0.451
PB1, PB2, PB3 = (VEE, VEE, open)
0.575 0.625 0.696
Prebias Voltage
PB1, PB2, PB3 = (VEE, VEE, VEE)
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
RPREBIAS
66
78
90 Ω
TX_DISABLE Resistance Resistance to VEE (Note 3) 50
65
100 kΩ
TX_DISABLE High VIH 2.0 V
TX_DISABLE Low VIL 0.8 V
Monitor Gain IMON / IMODSET, VMON < 1.1V,
RMODSET = 1kΩ, TC = TCMIN
0.92
1
1.08
A/A
Note 1: RMODSET = 1kΩ. Excludes IOUT+ and IOUT-, TX_DISABLE high or low.
Note 2: TC connected to TCMIN, PB1 = PB2 = VEE, PB3 = open.
Note 3: The TX_DISABLE pin is internally pulled low. The driver is enabled when TX_DISABLE is left open.
PJ’ 9m) SHMS fa)? [MAXI/VI ll/IIIXIIVI [MAXI/Ill [VI/IX I [VI
MAX3967A
270Mbps SFP LED Driver
_______________________________________________________________________________________ 3
AC ELECTRICAL CHARACTERISTICS
(Load as specified in Figure 1, unless otherwise noted. VCC = +2.97V to +5.5V (at the VCC pins), RMODSET = 1kΩ, TA= -40°C to
+85°C. Input data shaped by 470MHz 4-pole filter, PB1 = PB2 = VEE, PB3 = open. Typical values are at VCC = +3.3V, TC connected
to TCMIN, TA= +25°C.) (Note 4)
SYMBOL
MIN TYP MAX
UNITS
500 2400
mVP-P
20% to 80%, input is a 12.5MHz square wave 300
1230
psP-P
psRMS
0.01
0.01
Figure 1. MAX3967A Output Test Loads
SWITCHING DIODE
OSCILLOSCOPE
OUT-
L1
OUT+
OUT+
OUT-
AC ELECTRICAL LOADDC ELECTRICAL LOAD
FOR PREBIAS VOLTAGE
DC ELECTRICAL LOAD
(EXCEPT PREBIAS VOLTAGE)
OUT+
OUT-
MAX3967AMAX3967AMAX3967A
VCC
VCC
VLED
1.55V
50Ω
5Ω
50Ω
0.22µF
0.22µF
FERRITE
BEAD
VCC
VPREBIAS
Note 4: AC characteristics are guaranteed by design and characterization.
Note 5: PWC = (widthCURRENT ON - widthCURRENT OFF) / 2.
Note 6: Test pattern is a K28.5 (0011 1110 1011 0000 0101) transmitted at 266Mbps.
Note 7: Test pattern is equivalent to a 213 - 1 PRBS containing 72 consecutive zeros or 72 consecutive ones.
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MAX3967A
270Mbps SFP LED Driver
4 _______________________________________________________________________________________
Typical Operating Characteristics
(MAX3967AETG in Maxim evaluation board, VCC = +3.3V, PB1 = PB2 = VEE, PB3 = open, TC connected to TCNOM, RMODSET =
1kΩ, TA= +25°C, unless otherwise noted.)
40
38
36
34
32
30
28
26
24
22
20
-40 -20 -10-30 0 102030405060708090
SUPPLY CURRENT
vs. TEMPERATURE
MAX3967 toc01
AMBIENT TEMPERATURE (°C)
SUPPLY CURRENT (mA)
EXCLUDES CURRENT INTO OUT+ AND OUT-
VCC = 5.0V
VCC = 3.3V
0
40
20
80
60
100
120
-40 20 40-20 0 60 80
MODULATION CURRENT
vs. TEMPERATURE
MAX3967 toc02
AMBIENT TEMPERATURE (°C)
MODULATION CURRENT (mA)
MINIMUM TEMPCO
NOMINAL TEMPCO
MAXIMUM TEMPCO
0
40
20
80
60
100
120
0608020 40 100 120 140
DIE MODULATION CURRENT
vs. TEMPERATURE
MAX3967 toc03
JUNCTION TEMPERATURE (°C)
MODULATION CURRENT (mA)
MINIMUM TEMPCO
NOMINALTEMPCO
MAXIMUM TEMPCO
100,000
1000
1 10 100
MODULATION CURRENT TEMPCO
vs. RTC
MAX3967 toc04
RTC (kΩ)
MODULATION CURRENT TEMPCO (ppm/°C)
10,000
200
10
500 1k 10k
MODULATION CURRENT
vs. RMODSET
MAX3967 toc05
RMODSET (Ω)
MODULATION CURRENT (mA)
100
MINIMUM TEMPCO
NOMINAL TEMPCO
MAXIMUM TEMPCO
200
10
500 1k 8k
DIE MODULATION CURRENT
vs. RMODSET
MAX3967 toc06
RMODSET (Ω)
MODULATION CURRENT (mA)
100
MAXIMUM TEMPCO
NOMINAL TEMPCO
MINIMUM TEMPCO
EYE DIAGRAM (ELECTRICAL)
266Mbps
MAX3967 toc07
500ps/div
PATTERN = 231 - 1 PRBS
EYE DIAGRAM (OPTICAL)
155Mbps
MAX3967 toc08
1ns/div
RECEIVER BW = 200MHz, VCC = 2.97V, TA = +85°C,
PAVE = -17.1dBm, PATTERN = 231 - 1 PRBS
EYE DIAGRAM (OPTICAL)
155Mbps
MAX3967 toc09
1ns/div
RECEIVER BW = 200MHz, VCC = 5.5V, TA = -40°C,
PAVE = -15.8dBm, PATTERN = 231 - 1 PRBS
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MAX3967A
270Mbps SFP LED Driver
_______________________________________________________________________________________ 5
EYE DIAGRAM (OPTICAL)
155Mbps
MAX3967 toc10
1ns/div
RECEIVER BW = 200MHz, VCC = 5.5V, TA = +85°C,
PAVE = -17.1dBm, PATTERN = 231 - 1 PRBS
EYE DIAGRAM (OPTICAL)
155Mbps
MAX3967 toc11
1ns/div
RECEIVER BW = 200MHz, VCC = 2.97V, TA = -40°C,
PAVE = -15.8dBm, PATTERN = 231 - 1 PRBS
0
2
1
4
3
5
6
0 102030405060708090
RANDOM JITTER
vs. TEMPERATURE
MAX3967 toc12
AMBIENT TEMPERATURE (°C)
RANDOM JITTER (psRMS)
VCC = 5.0V
MINIMUM TEMPCO
VCC = 3.3V
MAXIMUM TEMPCO
TX_DISABLE NEGATE TIME
MAX3967 toc13
4ns/div
LED
OUTPUT
TX_DISABLE
t_on
TX_DISABLE ASSERT TIME
MAX3967 toc14
4ns/div
LED
OUTPUT
TX_DISABLE
t_off
Typical Operating Characteristics (continued)
(MAX3967AETG in Maxim evaluation board, VCC = +3.3V, PB1 = PB2 = VEE, PB3 = open, TC connected to TCNOM, RMODSET =
1kΩ, TA= +25°C, unless otherwise noted.)
[VI/JXIIVI
MAX3967A
Detailed Description
The MAX3967A provides a flexible current drive for the
modulation of fiber optic light-emitting diodes (LEDs).
The circuit is designed to be used with +3.3V or +5V
power supplies. The IC provides up to 100mA of modu-
lation current. An adjustable prebias current source sets
the LED prebias voltage. An integrated resistor provides
passive peaking and optical pulse-width compensation.
Figure 2 shows a block diagram of the MAX3967A,
which comprises a reference-voltage generator, modu-
lation-current generator, input buffer with disable, pre-
bias-current generator, main output driver,
complementary output driver, and LED-compensation
network.
Temperature Compensation
The reference-voltage generator circuit provides two
voltage sources that create modulation-current tempera-
ture compensation. A positive modulation-current tem-
perature coefficient (tempco) is useful to compensate
for the temperature characteristics of typical fiber optic
LEDs. The first source has a temperature-stable output.
The second source has a temperature-increasing output
with a tempco of approximately 12,000ppm/°C (relative
to +25°C). A resistor-divider between the two reference
generators programs the modulation-current tempco.
For maximum modulation-current tempco, leave the TC
pin disconnected. For a tempco of approximately
3600ppm/°C, connect TC to TCNOM. To obtain the mini-
mum tempco, connect TCMIN to TC. Intermediate temp-
co values can be programmed by connecting an
external resistor (RTC) between TCMIN and TC.
Input Buffer
The inputs are connected to the PECL-compatible differ-
ential input buffer. If left unconnected, IN+ is internally
pulled to a PECL low and IN- is pulled to a PECL high,
causing low current at OUT+. The input impedance of
IN+ and IN- is approximately 50kΩ.
270Mbps SFP LED Driver
6 _______________________________________________________________________________________
PIN NAME FUNCTION
1 TCNOM Shorting TC to TCNOM provides a modulation tempco of approximately 3600ppm/°C.
2TC
A resistor (RTC) connected between the TC and TCMIN pins sets the tempco of the modulation
current. Leaving RTC unconnected provides the maximum tempco.
3, 4, 5 PB1, PB2, PB3 Programs the Prebias Voltage at the OUT+ Pin (Table 1)
6, 7 VEEOUT Ground for the Output-Current Drivers
8, 9 OUT+ Current Output
10, 11 OUT- Complementary Current Output
12, 16 N.C. No Connection. Not internally connected.
13, 14 VCCOUT Supply Connection for the Output-Current Drivers
15, 19 VCC Provides Current to the Internal Amplifiers
17 MON The Current Sourced from the MON Pin is Proportional to the Modulator Current
18 MODSET A Resistor from MODSET to VEE Programs the LED Modulation Current
20 IN- Inverting Data Input
21 IN+ Noninverting Data Input
22 TX_DISABLE Transmit Disable. When high, the current at the OUT+ pins is in the low state. The transmitter is
enabled when TX_DISABLE is open.
23 VEE Ground for internal amplifiers.
24 TCMIN Shorting TC to TCMIN provides the minimum modulation-current tempco.
EP Exposed Pad Connect the exposed pad to board ground for optimal correct electrical and thermal performance.
Pin Description
wéJ AW
Modulation-Current Generator
The modulation-current generator circuit provides con-
trol of the modulation-current amplitude. This amplitude
is determined by the voltage at the MODSET pin and
external resistor RMODSET.
Do not connect bypass capacitors at the MODSET pin.
Capacitance at this pin increases high-frequency out-
put noise. The MON pin provides an optional modula-
tion-current monitor. The current sourced from the MON
pin is 1/96 of the modulation current. If used, the pin
should be connected to VEE through a resistor. The
resistance must be chosen so the voltage on MON
does not exceed 1.1V. If not used, leave MON open.
Prebias Current Generator
A prebias voltage (VPREBIAS) can be applied to the
LED to improve switching speed. The prebias current
generator creates a current that flows through the 78Ω
prebias resistor in the output stage, creating a prebias
voltage. The prebias voltage can be adjusted by selec-
tively connecting pins PB1, PB2, and PB3 to VEE. Table 1
describes the functions of PB1, PB2, and PB3.
Output Current Drivers
The modulation-current reference is switched and
amplified by the output stages.
LED package lead inductance causes ringing and
overshoot, which can be compensated with an RC filter
network. The MAX3967A includes 35Ωand 12pF of
MAX3967A
270Mbps SFP LED Driver
_______________________________________________________________________________________ 7
Figure 2. Functional Diagram
12pF
MODULATION-
CURRENT
GENERATOR
REFERENCE-VOLTAGE GENERATOR
PREBIAS-CURRENT
GENERATOR
COMPLEMENTARY
OUTPUT
24X
MAIN
OUTPUT
24X
V
TEMP
TCMIN
PB1 PB2 PB3
TCNOM TC MODSET MON
1.2V
OUT-
OUT+
IN-
IN+
INPUT
BUFFER
GAIN 4X
MAX3967A
RMODSET
VCCOUT
TX_DISABLE
50Ω
35Ω
5Ω
VCC
RPREBIAS
78Ω
10
0
[VI/JXIIVI
MAX3967A
internal compensation. The compensation network can
be optimized by adding additional components
between VCCOUT and OUT+.
The MAX3967A includes a complementary output dri-
ver, which is switched 180° out of phase with the main
output. This configuration helps to maintain constant
current flow from the voltage supply, reducing noise
and EMI. A large diode and a 5Ωresistor are connect-
ed in series with the negative output (OUT-) to emulate
the LED load at OUT+.
Peaking Current
The prebias resistor provides peaking current to improve
the LED switching speed. The peaking magnitude is
given by the following equation:
The peaking amplitude is equal for rising and falling
data transitions.
Design Procedure
Select an LED
For best performance, select a high-efficiency, low-
inductance LED. LED inductance causes large voltage
swings and ringing.
Program the Modulation-Current Tempco
Select a modulation-current tempco that provides near-
ly constant LED output power as temperature varies.
For the minimum tempco, connect TCMIN to the TC pin.
For a tempco of approximately 3600ppm/°C, connect
TC to TCNOM and leave TCMIN unconnected. For the
maximum tempco, leave TCMIN, TCNOM, and TC
unconnected.
See the Modulation Current Tempco vs. RTC graph in
the Typical Operating Characteristics to program a cus-
tom tempco. From the graph, determine the appropriate
resistor and connect it between TCMIN and TC.
For example, if an LED requires a 5000ppm/°C tempco,
choose RTC of 8.3kΩ.
Program the Modulation Current
Determine the required modulation current at TA= +25°C.
Then select the appropriate value of RMODSET from the
Modulation Current vs. RMODSET graph in the Typical
Operating Characteristics.
For example, to program 75mA modulation current, the
graph indicates an RMODSET value of 750Ωfor maxi-
mum tempco (12,000ppm/°C) and 1kΩfor nominal
tempco (3600ppm/°C). By interpolation, choose an
RMODSET of 792Ωfor a tempco of 5000ppm/°C.
Program Prebias Voltage
Determine the LED prebias voltage that produces an
acceptable trade-off between peaking current and extinc-
tion ratio. See Table 1 for PB1, PB2, and PB3 settings.
Layout Considerations
For optimum performance, total load inductance should
not exceed 10nH. Load inductance includes LED
inductance, LED package lead inductance, and circuit-
board traces. Keep the connections between the
MAX3967A OUT pins and the LED as short as possible
to minimize inductance.
Chip-and-wire (hybrid) technology reduces package
inductance significantly, and provides the best possible
performance.
Use good high-frequency layout techniques and a
multilayer board with an uninterrupted ground plane.
Power supplies should be capacitively bypassed to the
ground plane with surface-mount capacitors located
near the power-supply pins.
IPEAK LED PREBIAS
V-V
78
=Ω
270Mbps SFP LED Driver
8 _______________________________________________________________________________________
Table 1. LED Prebias Voltage
PB1 PB2 PB3 PREBIAS (V)
Open Open Open 0.400
VEE Open Open 0.475
Open VEE Open 0.550
VEE VEE Open 0.625
Open Open VEE 0.700
VEE Open VEE 0.775
Open VEE VEE 0.850
VEE VEE VEE 0.925
[VI/IXIM [MAXIM [VI/JXI [VI
Applications Information
Wire-Bonding Die
The MAX3967A utilizes gold metalization, which pro-
vides high reliability. Make connections to the die with
gold wire only, using ball-bonding techniques. Use
caution if attempting wedge-bonding. Pad size is 4 mils
x 4 mils (100µm). Die thickness is typically 15 mils
(375µm).
Exposed-Pad Package
The exposed pad on the 24-pin TQFN provides a very
low thermal resistance path for heat removal from
the IC.
Chip Information
TRANSISTOR COUNT: 331
SUBSTRATE CONNECTED TO VEE
PROCESS: BIPOLAR
DIE THICKNESS: 15 mils
MAX3967A
270Mbps SFP LED Driver
_______________________________________________________________________________________ 9
Input Terminations
PECL
OUTPUT IN+
VCC
VCC
VCC - 2V
50Ω
3.3 82 130
R1 R2
5.0 68 180
R1
R2
RF OR NON-PECL
OUTPUT IN+
SINGLE-ENDED TERMINATION IS SHOWN. IN- SHOULD BE TERMINATED SIMILARLY.
MAX3967A
MAX3967A
Figure 3. Input Terminations
{H E: a; : {gg ....... #7} if 3
MAX3967A
270Mbps SFP LED Driver
10 ______________________________________________________________________________________
MODSET
TCTCNOM
TX_DISABLEDISABLE
PB3PB2PB1
IN-
MON
IN+
FERRITE BEAD
MAX3967A
10kΩ
VEEOUT
CIN
VCCOUT
VCC
RMODSET
RMON
OUT+
OUT-
VEE
+3.3V
SFP TRANSMITTER WITH DIGITAL MONITOR
82Ω
+3.3V
120Ω
82Ω
+3.3V
120Ω
CIN
DIAGNOSTIC
IC
DIFFERENTIAL
DATA
TCMIN
MODSET
TCTCMIN
TX_DISABLEDISABLE
DIFFERENTIAL
DATA
PB3PB2PB1
IN-
IN+
FERRITE BEAD
MAX3967A
10kΩ
VEEOUT
CIN
VCCOUT
VCC
RMODSET
OUT+
OUT-
VEE
+3.3V
SFP TRANSMITTER
82Ω
+3.3V
120Ω
82Ω
+3.3V
120Ω
CIN TCNOM
Typical Operating Circuits
J [MAXI/Ill if w I ‘ w é * T : ‘ — J a; ‘7 MAXI/VI [VI/JXI [VI
MAX3967A
270Mbps SFP LED Driver
______________________________________________________________________________________ 11
MODSET
TC
RTC*
TCNOM TCMIN
TX_DISABLE
*OPTIONAL COMPONENT
DISABLE
PECL
DATA
PB3PB2PB1
IN-
MON
IN+
FERRITE BEAD
MAX3967A
VEEOUT
VCCOUT
VCC
RMODSET
OUT+
OUT-
VEE
VCC
SFF TRANSMITTER WITH DISABLE
Typical Operating Circuits (continued)
MODSET
TCTCMINTCNOM
TX_DISABLE
PECL
DATA
PB3PB2PB1
IN-
IN+
FERRITE BEAD
MAX3967A
VEEOUT
VCCOUT
VCC
RMODSET
OUT+
OUT-
VEE
VCC
SFF TRANSMITTER WITHOUT DISABLE
MON
[VIIJXIIM
MAX3967A
270Mbps SFP LED Driver
12 ______________________________________________________________________________________
TCMIN
TCNOM
TC
PB1
PB2
PB3
OUT+
OUT+
OUT-
OUT-
MON
MODSET
IN-IN+
TX_DISABLE
1.21mm
(48 mils)
(0, 0)
1.85mm
(73.0 mils)
VCC
VCC
VCCOUT
VEEOUT
VEEOUT VCCOUT
VEE
Chip Topography Pad Coordinates
COORDINATES (µm)
PAD
NUMBER PAD NAME XY
BP1 TCMIN 0 1464
BP2 TCNOM 0 1268
BP3 TC 0 1060
BP4 PB1 0 876
BP5 PB2 0 744
BP6 PB3 0 560
BP7 VEEOUT 0 116
BP8 VEEOUT 00
BP9 OUT+ 180 0
BP10 OUT+ 296 0
BP11 OUT- 480 0
BP12 OUT- 596 0
BP13 VCCOUT 804 0
BP14 VCCOUT 804 124
BP15 VCC 804 528
BP16 MON 804 1032
BP17 MODSET 804 1240
BP18 VCC 804 1464
BP19 IN- 624 1464
BP20 IN+ 492 1464
BP21 TX_DISABLE 308 1464
BP22 VEE 176 1464
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MAX3967A
270Mbps SFP LED Driver
______________________________________________________________________________________ 13
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
PART PACKAGE TYPE PACKAGE
CODE
MAX3967AETG
24 thin QFN
(4mm x 4mm x 0.8mm)
T2444-4
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MAX3967A
270Mbps SFP LED Driver
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implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
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Package Information(continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
PACKAGE OUTLINE,
21-0139
2
2
D
12, 16, 20, 24, 28L THIN QFN, 4x4x0.8mm