MAX3669ETG+ Maxim Integrated Products, MAX3669ETG+ Datasheet

IC LASR DRVR 622MBPS 5.5V 24TQFN

MAX3669ETG+

Manufacturer Part Number
MAX3669ETG+
Description
IC LASR DRVR 622MBPS 5.5V 24TQFN
Manufacturer
Maxim Integrated Products
Type
Laser Diode Driver (Fiber Optic)r
Datasheet

Specifications of MAX3669ETG+

Data Rate
622Mbps
Number Of Channels
1
Voltage - Supply
3.14 V ~ 5.5 V
Current - Supply
40mA
Current - Modulation
75mA
Current - Bias
80mA
Operating Temperature
-40°C ~ 85°C
Package / Case
24-TQFN Exposed Pad
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX3669 is a complete, +3.3V laser driver with auto-
matic power control (APC) circuitry for SDH/SONET appli-
cations up to 622Mbps. It accepts differential PECL
inputs, provides bias and modulation currents, and oper-
ates over a temperature range from -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 from 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. Two pins are provided to
monitor the current levels in the laser: BIASMON with
current proportional to laser bias current, and MODMON
with current proportional to laser modulation.
The MAX3669 also provides enable control and a failure-
monitor output to indicate when the APC loop is unable
to maintain the average optical power. The MAX3669
is available in 4mm x 4mm 24-pin thin QFN and
5mm x 5mm 32-pin TQFP packages as well as dice.
19-1575; Rev 5; 2/05
Pin Configurations appear at end of data sheet.
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.
622Mbps SDH/SONET Access Nodes
Laser Driver Transmitters
Section Regenerators
Laser Driver with Current Monitors and APC
MAX3693
CLOCK GEN
SERIALIZER
WITH
4:1
________________________________________________________________ Maxim Integrated Products
+3.3V
124Ω
PECL
84.5Ω
General Description
+3.3V
124Ω
84.5Ω
Applications
DATA+
DATA-
BIASMON
MODMON
+3.3V, 622Mbps SDH/SONET
MAX3669
♦ +3.3V or +5.0V Single-Supply Operation
♦ 40mA Supply Current at +3.3V
♦ Programmable Bias Current from 1mA to 80mA
♦ Programmable Modulation Current from
♦ Bias Current and Modulation Current Monitors
♦ 200ps Rise/Fall Time
♦ Automatic Average Power Control with Failure
♦ Complies with ANSI, ITU, and Bellcore
♦ Enable Control
+Denotes lead-free package.
Note A: Dice are designed to operate over a -40°C to +140°C
junction temperature (T
at T
*Package Code: T2444-1.
**Contact factory for availability.
MAX3669ETG
MAX3669ETG+
MAX3669EHJ
MAX3669EHJ+
MAX3669E/D
5mA to 75mA
Monitor
SONET/SDH Specifications
A
0.1µF
= +25°C.
PART
+3.3V
Typical Application Circuit
V
CC
OUT+
OUT-
BIAS
MD
-40°C to +85°C 24 Thi n Q FN * ( 4m m x 4m m )
-40°C to +85°C 24 Thi n Q FN * ( 4m m x 4m m )
-40°C to +85°C 32 TQFP (5mm x 5mm)
-40°C to +85°C 32 TQFP (5mm x 5mm)
TEMP RANGE PIN-PACKAGE
(Note A)
j
) range, but are tested and guaranteed
Ordering Information
R-
6.3Ω
FERRITE
1µF
C
BEAD
R+
20Ω
D
D i ce**
C
R
20Ω
FILT
5pF
FILT
5Ω
R
D
LASER
Features
C
100pF
MD
1

Related parts for MAX3669ETG+

MAX3669ETG+ Summary of contents

Page 1

... Automatic Average Power Control with Failure Monitor ♦ Complies with ANSI, ITU, and Bellcore SONET/SDH Specifications ♦ Enable Control PART MAX3669ETG MAX3669ETG+ MAX3669EHJ Applications MAX3669EHJ+ MAX3669E/D +Denotes lead-free package. Note A: Dice are designed to operate over a -40°C to +140°C junction temperature ( +25° ...

Page 2

SDH/SONET Laser Driver with Current Monitors and APC 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 ...

Page 3

Laser Driver with Current Monitors and APC 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 Current Monitors and APC (V = +3.3V +25°C, unless otherwise noted EYE DIAGRAM (622Mbps, 1300nm LASER WITH 467MHz FILTER – 1 PRBS 200ps/div MONITOR DIODE CURRENT vs. APC ...

Page 5

Laser Driver with Current Monitors and APC (V = +3.3V +25°C, unless otherwise noted DISTRIBUTION OF MODULATION CURRENT STABILITY (WORST CASE -40°C TO +85° 5mA MOD ...

Page 6

SDH/SONET Laser Driver with Current Monitors and APC PIN NAME TQFN TQFP 1, 13 17, 20 DATA DATA 11, 5, 10, 14, GND ...

Page 7

Laser Driver with Current Monitors and APC DATA+ DATA- ENABLE BIASMON MAX3669 BIAS 38 R MODMON I MOD 29 Figure 3. Functional Diagram Detailed Description The MAX3669 laser driver consists of three main parts: ...

Page 8

SDH/SONET Laser Driver with Current Monitors and APC Automatic Power Control To maintain constant average optical power, the MAX3669 incorporates an APC loop to compensate for the changes in laser threshold current over temperature and lifetime. A back-facet ...

Page 9

Laser Driver with Current Monitors and APC Resistor graph in the Typical Operating Character- istics and select the value of R BIASMAX sponds to the required current at +25°C. When using the MAX3669 in closed-loop operation, the R resistor sets ...

Page 10

SDH/SONET Laser Driver with Current Monitors and APC Calculate Power Consumption The total power dissipation of the MAX3669 can be esti- mated by the following ...

Page 11

Laser Driver with Current Monitors and APC At +5V power supply, the headroom voltage for the MAX3669 is significantly improved. In this case possible to achieve a modulation current of more than 50mA (using resistor pullups as shown ...

Page 12

SDH/SONET Laser Driver with Current Monitors and APC Chip Topography GND ENABLE GND GND N. FAIL GND N.C. N.C. GND V CC BIAS 0.070" (1.78mm) 12 ______________________________________________________________________________________ TRANSISTOR COUNT: 1525 SUBSTRATE CONNECTED TO GND V CC ...

Page 13

Laser Driver with Current Monitors and APC (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) ______________________________________________________________________________________ +3.3V, 622Mbps SDH/SONET PACKAGE OUTLINE, 32L TQFP, 5x5x1.0mm, EP ...

Page 14

SDH/SONET Laser Driver with Current Monitors and APC (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 14 ______________________________________________________________________________________ Package Information (continued) PACKAGE OUTLINE, ...

Page 15

... Maxim product could create a situation where personal injury or death may occur. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2005 Maxim Integrated Products +3 ...

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