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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX3667 Datasheet

+3.3V / 622Mbps SDH/SONET Laser Driver

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19-1311; Rev 3; 1/03
EVAALVUAAILTAIOBNLEKIT
+3.3V, 622Mbps SDH/SONET Laser Driver
with Automatic Power Control
General Description
The MAX3667 is a complete, +3.3V laser driver with
automatic power control (APC), designed for SDH/
SONET applications up to 622Mbps. It accepts differ-
ential PECL inputs, provides single-ended bias and
modulation currents, and operates over a -40°C to
+85°C temperature range.
A temperature-stabilized reference voltage simplifies
laser current programming. It allows external program-
ming of the modulation current between 5mAP-P and
60mAP-P, and of the bias current between 5mA and
90mA.
The APC function, which incorporates a monitor photo-
diode, an external resistor, and two external capacitors,
maintains constant laser output power. Two current
monitors provide high-speed signals that are directly
proportional to the bias and modulation currents.
Additional features include disable/enable control and
a slow-start feature with a minimum turn-on time of
50ns. The MAX3667 is available in die form and in a
32-pin TQFP package.
Applications
622Mbps SDH/SONET Access Nodes
Laser Driver Transmitters
Section Repeaters
Features
o Single +3.3V or +5.0V Operation
o Automatic Average Power Control
o Bias Current and Modulation Current Monitor
Outputs
o TTL-Compatible Disable Input
o Temperature-Compensated Reference
o PECL-Compatible Data Inputs
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX3667ECJ -40°C to +85°C
32 TQFP
MAX3667E/D
-40°C to +85°C
Dice*
*Dice are designed to operate from -40°C to +85°C but are
tested and guaranteed only at Tj = +25°C.
Pin Configuration appears at end of data sheet.
Typical Operating Circuit
+3.3V
+3.3V
CCOMP 1µF
50
0.1µF
MONITOR
DIODE
LASER
DIODE
0.1µF
COMP BIASMON MODMON APCSET
MAX3691
4:1
SERIALIZER
WITH
CLOCK GEN
130130
IN+
PECL
IN-
MAX3667
8282
GND DISABLE MODSET BIASSET
APC
VCC MD
IMOD
IBIAS
CAPC
1nF
RDAMP
1µF 4.7
RFILT
22
0.01µF
470nH
100
________________________________________________________________ Maxim Integrated Products 1
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.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX3667 Datasheet

+3.3V / 622Mbps SDH/SONET Laser Driver

No Preview Available !

+3.3V, 622Mbps SDH/SONET Laser Driver
with Automatic Power Control
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VCC..............................................-0.5V to +7.0V
Current into IBIAS..............................................-50mA to 350mA
Current into IMOD .............................................-50mA to 200mA
Current into MD ..................................................................±7mA
Voltage at APC, MODMON,
BIASMON, COMP....................................-0.5V to (VCC + 0.5V)
Voltage at IN+, IN-, DISABLE, MODSET,
BISASSET, APCSET, PULLUP..................-0.5V to (VCC + 0.5V)
Continuous Power Dissipation (TA = +85°C)
TQFP (derate 11.1mW/°C above +85°C) ......................721mW
Operating Temperature Range ...........................-40°C to +85°C
Operating Junction Temperature Range (die) ..-55°C to +175°C
Processing Temperature (die) .........................................+400°C
Storage Temperature Range .............................-65°C to +160°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
(VCC = +3.3V ±5%, TA = -40°C to +85°C, unless otherwise noted.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
Supply Current (Note 3)
Bias Current Range
Bias Off Current
Modulation Off Current
ICC
IBIAS
IBIAS
IBIAS
Closed loop (Note 4)
(Note 5)
Disable = high
Disable = high
Internal Pullup Resistor
(Note 6)
RPULLUP
Reference Voltage (Note 7)
Bias Current Stability
Modulation Current Stability
BIASMON to IBIAS Gain
MODMON to IQMOD Gain
IBIASSET to IBIAS Gain
IMODSET to IQMOD Gain
IAPCSET to IBIAS Gain
PECL Input High Voltage
PECL Input Low Voltage
PECL Input High Current
PECL Input Low Current
TTL Disable High Voltage
TTL Disable Low Voltage
TTL Disable High Current
TTL Disable Low Current
VREF
AI
AI
AI
AI
AI
VIH
VIL
IIH
IIH
VDIH
VDIL
IDIH
IDIL
Disable = high or low
RBIASSET = 2k, open loop (Note 8)
RBIASSET = 33.2k, open loop (Note 8)
RBIASSET = 2k, closed loop (Notes 4, 9)
RMODSET = 2k, open loop (Note 8)
RMODSET = 33.2k, open loop (Note 8)
RBIASSET = 2k
RMODSET = 2k(Note 10)
RBIASSET = 2k
RBIASSET = 33.2k
RMODSET = 2k(Note 10)
RMODSET = 33.2k(Note 10)
RAPCSET = 2k
RAPCSET = 33.2k
VIN = 2.14V
VIN = 1.82V
MIN
5
26
0.91
30
26
145
128
152
152
135
164
2.14
2.0
TYP
112
5
20
31
1.01
500
1000
1100
1100
38
33
170
160
190
190
170
205
4.5
2
1
4
MAX
133
90
250
250
UNITS
mA
mA
µA
µA
35
1.11 V
ppm/°C
480
ppm/°C
46
40
200
195
230
230
205
250
1.82
10
10
0.8
A/A
A/A
A/A
A/A
A/A
V
V
µA
µA
V
V
µA
µA
2 _______________________________________________________________________________________


Part Number MAX3667
Description +3.3V / 622Mbps SDH/SONET Laser Driver
Maker Maxim
Total Page 12 Pages
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