MAX3668EHJ+ Maxim Integrated Products, MAX3668EHJ+ Datasheet

IC LSR DRVR 622MBPS 3.63V 32TQFP

MAX3668EHJ+

Manufacturer Part Number
MAX3668EHJ+
Description
IC LSR DRVR 622MBPS 3.63V 32TQFP
Manufacturer
Maxim Integrated Products
Type
Laser Diode Driver (Fiber Optic)r
Datasheet

Specifications of MAX3668EHJ+

Data Rate
622Mbps
Number Of Channels
1
Voltage - Supply
3.14 V ~ 5.5 V
Current - Supply
38mA
Current - Modulation
75mA
Current - Bias
80mA
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP, 32-VQFP
Mounting Type
Surface Mount
Package
32TQFP
Number Of Channels Per Chip
1
Operating Supply Voltage
3.14 to 5.5 V
Supply Current
38 mA
Maximum Power Dissipation
929 mW
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX3668 is a complete, +3.3V laser driver with
automatic power control (APC) circuitry for SDH/SONET
applications up to 622Mbps. It accepts differential
PECL inputs, provides bias and modulation currents,
and operates over a temperature range of -40°C to
+85°C.
An APC feedback loop is incorporated to maintain a
constant average optical power over temperature and
lifetime. The wide modulation current range of 5mA to
75mA and bias current of 1mA to 80mA are easy to
program, making this product ideal for use in various
SDH/SONET applications.
The MAX3668 also provides enable control and a failure-
monitor output to indicate when the APC loop is unable
to maintain the average optical power. The MAX3668 is
available in a 5mm 32-pin TQFP package as well as in
dice.
19-4799; Rev 4; 2/05
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.
C0
622Mbps SDH/SONET Access Nodes
Laser Driver Transmitters
Section Regenerators
Laser Driver with Automatic Power Control
MAX3693
CLOCK GEN
SERIALIZER
WITH
4:1
________________________________________________________________ Maxim Integrated Products
General Description
130Ω
PECL
82Ω
+3.3V
130Ω
Applications
82Ω
DATA+
DATA-
+3.3V, 622Mbps SDH/SONET
MAX3668
♦ Single +3.3V or +5.0V Operation
♦ 38mA Supply Current at +3.3V
♦ Programmable Modulation Current from
♦ Programmable Bias Current from 1mA to 80mA
♦ Rise/Fall Time <200ps
♦ Automatic Average Power Control with Failure
♦ Complies with ANSI, ITU, and Bellcore
♦ Enable Control
Note: Dice are designed to operate over a -40°C to +140°C
junction temperature (Tj) range, but are tested and guaranteed
at T
*Contact factory for availability.
+Denotes lead-free package.
Pin Configuration appears at end of data sheet.
MAX3668EHJ
MAX3668EHJ+
MAX3668E/D
5mA to 75mA
Monitor
SONET/SDH Specifications
A
= +25°C.
PART
0.1µF
+3.3V
V
CC
OUT+
OUT-
Typical Operating Circuit
BIAS
MD
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
Note
R-
6.3Ω
1.0µF
FERRITE
C
R+
20Ω
BEAD
D
C
R
20Ω
5pF
FILT
FILT
5Ω
PIN-PACKAGE
32 TQFP (5mm x 5mm)
32 TQFP (5mm x 5mm)
Dice*
R
D
LASER
Features
C
1000pF
MD
1

Related parts for MAX3668EHJ+

MAX3668EHJ+ Summary of contents

Page 1

... Monitor ♦ Complies with ANSI, ITU, and Bellcore SONET/SDH Specifications ♦ Enable Control PART Applications MAX3668EHJ MAX3668EHJ+ MAX3668E/D Note: Dice are designed to operate over a -40°C to +140°C junction temperature (Tj) range, but are tested and guaranteed +25°C. A *Contact factory for availability. ...

Page 2

SDH/SONET Laser Driver with Automatic Power Control ABSOLUTE MAXIMUM RATINGS Supply Voltage, V .............................................-0.5V to +7.0V CC Current into BIAS ............................................-20mA to +150mA Current into OUT+, OUT- ............................... -20mA to +100mA Current into MD....................................................-5mA to +5mA Voltage at ...

Page 3

Laser Driver with Automatic Power Control AC ELECTRICAL CHARACTERISTICS (V = +3.14V to +5.5V, load as shown in Figure +25°C.) (Note 6) A PARAMETER SYMBOL Modulation Current Range I MOD Modulation Off Current Modulation Current ...

Page 4

SDH/SONET Laser Driver with Automatic Power Control (V = +3.3V +25°C, unless otherwise noted EYE DIAGRAM (622Mbps, 1300nm LASER WITH 467MHz FILTER PRBS 193ps/div MONITOR DIODE CURRENT vs. APC SET ...

Page 5

Laser Driver with Automatic Power Control (V = +3.3V +25°C, unless otherwise noted AVAILABLE BIAS CURRENT vs. MAXIMUM BIAS SET RESISTOR 1000 V = +3.3V 100 CLOSED-LOOP OPERATION +5V ...

Page 6

SDH/SONET Laser Driver with Automatic Power Control DATA+ DATA 100k ENABLE MAX3668 MODSET R Figure 3. Functional Diagram Detailed Description The MAX3668 laser driver consists of two main parts: a high-speed modulation driver and a laser-biasing ...

Page 7

Laser Driver with Automatic Power Control Automatic Power Control To maintain constant average optical power, the MAX3668 incorporates an APC loop to compensate for the changes in laser threshold current over temperature and lifetime. A back-facet photodiode mounted in the ...

Page 8

SDH/SONET Laser Driver with Automatic Power Control Programming the APC Loop When the MAX3668’s APC feature is used, program the average optical power by adjusting the APCSET resis- tor. To select this resistor, determine the desired moni- tor ...

Page 9

Laser Driver with Automatic Power Control ratio 6.6 (8.2dB), the operating temperature is e -40°C to +85°C, and the laser diode has the following characteristics: λ = 1.3µm Wavelength: Ι Threshold Current: TH Threshold Temperature β Coefficient: ...

Page 10

SDH/SONET Laser Driver with Automatic Power Control Pin Configuration TOP VIEW DATA+ 3 DATA- 4 MAX3668 GND GND 7 GND 8 10 ...

Page 11

Laser Driver with Automatic Power Control (Package information continues on next page.) ______________________________________________________________________________________ +3.3V, 622Mbps SDH/SONET PACKAGE OUTLINE, 32L TQFP, 5x5x1.0mm, EP OPTION Package Information 1 21-0079 ...

Page 12

... Maxim product could create a situation where personal injury or death may occur. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products Package Information (continued) Printed USA is a registered trademark of Maxim Integrated Products, Inc ...

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