MAX3737ETJ ,Multirate Laser Driver with Extinction Ratio ControlApplicationsV 3 22 OUT+CCMultirate OC-3 to OC-48 FEC TransceiversIN+ 4 21 OUT+Gigabit Ethernet SFF/ ..
MAX3738ETG+ ,155Mbps to 4.25Gbps SFF/SFP Laser Driver with Extinction Ratio Control
MAX3738ETG+T ,155Mbps to 4.25Gbps SFF/SFP Laser Driver with Extinction Ratio Control
MAX3740AETG ,3.2Gbps SFP VCSEL Driver with Diagnostic Monitors
MAX3740AETG+ ,3.2Gbps SFP VCSEL Driver with Diagnostic Monitors
MAX3740AETG+T ,3.2Gbps SFP VCSEL Driver with Diagnostic Monitors
MAX732CPA ,+5V/Adjustable Step-Up Current-Mode DC-DC ConvertersELECTRICAL CHARACTERISTICS
(Circuit of Figure 2, V+ = 5V, ILOAD = 0mA, TA = TMIN to TMAX, unless ..
MAX732CWE ,+12 V step-up current-mode PWM regulatorapplications information,
refer to AN-4.1, MAX732 E V Surface-Mount Evaluation
Board and Flash EE ..
MAX732CWE ,+12 V step-up current-mode PWM regulatorFeatures
. Load Current: Guaranteed to 200mA with No
External MOSFET (125mA tor MAX733)
. 170k ..
MAX732CWE ,+12 V step-up current-mode PWM regulatorApplications
Flash Memory Programming Power Supply
Portable Instruments
Distributed Power Syst ..
MAX732CWE ,+12 V step-up current-mode PWM regulator19-3966; Rev 2; 396
lVI/J X I IVI
+12 V/+15 tf Step-Up Current-Mode
MAX732CWE+ ,+12V/+15V Step-Up Current-Mode PWM RegulatorsFeatures
. Load Current: Guaranteed to 200mA with No
External MOSFET (125mA tor MAX733)
. 170k ..
MAX3737ETJ
Multirate Laser Driver with Extinction Ratio Control
General DescriptionThe MAX3737 is a +3.3V laser driver designed for
multirate transceiver modules with data rates from
155Mbps to 2.7Gbps. Lasers can be DC-coupled to the
MAX3737 for reduced component count and ease of
multirate operation.
Laser extinction ratio control (ERC) combines the features
of automatic power control (APC), modulation compensa-
tion, and built-in thermal compensation. The APC loop
maintains constant average optical power. Modulation
compensation increases the modulation current in pro-
portion to the bias current. These control loops combined
with thermal compensation maintain a constant optical
extinction ratio over temperature and lifetime.
The MAX3737 accepts differential data input signals.
The wide 5mA to 60mA (up to 85mA AC-coupled) mod-
ulation current range and up to 100mA bias current
range makes the MAX3737 ideal for driving FP/DFB
lasers in fiber-optic modules. External resistors set the
required laser current levels. The MAX3737 provides
transmit disable control (TX_DISABLE), single-point
fault tolerance, bias-current monitoring, modulation-cur-
rent monitoring, and photocurrent monitoring. The
device also offers a latched failure output (TX_FAULT)
to indicate faults, such as when the APC loop is no
longer able to maintain the average optical power at the
required level. The MAX3737 is compliant with the SFF-
8472 transmitter diagnostic and SFP MSA timing
requirements.
The MAX3737 is offered in a 5mm x 5mm 32-pin thin QFN
and QFN package and operates over the -40°C to +85°C
extended temperature range.
ApplicationsMultirate OC-3 to OC-48 FEC Transceivers
Gigabit Ethernet SFF/SFP and GBIC
Transceivers
1Gbps/2Gbps Fibre Channel SFF/SFP and GBIC
Transceivers
FeaturesSingle +3.3V Power Supply47mA Power-Supply Current 85mA Modulation Current100mA Bias CurrentAutomatic Power Control (APC)Modulation CompensationOn-Chip Temperature CompensationSelf-Biased Inputs for AC-CouplingGround-Referenced Current MonitorsLaser Safety, Shutdown, and Alarm Outputs
MAX3737
Ratio Control
Ordering Information
Functional Diagram and Typical Application Circuit appear
at end of data sheet.
MAX3737
Multirate Laser Driver with Extinction
Ratio Control
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VCC= +2.97V to +3.63V, TA = -40°C to +85°C. Typical values are at VCC= +3.3V, IBIAS= 60mA, IMOD= 60mA, TA = +25°C, unless
otherwise noted.) (Notes 1, 2)
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.
Supply Voltage VCC...............................................-0.5V to +6.0V
IN+, IN-, TX_DISABLE, TX_FAULT, SHUTDOWN,
MC_MON, BC_MON, PC_MON, VBS, VMD,
APCFILT1, APCFILT2, MD, TH_TEMP,
MODTCOMP, MODBCOMP, MODSET, and
APCSET Voltage.......................................-0.5V to VCC+ 0.5V
OUT+, OUT-, BIAS Current.............................-20mA to +150mA
Continuous Power Dissipation (TA= +85°C)
32-Pin QFN (derate 21.2mW/°C above +85°C)...............1.3W
Operating Junction Temperature Range...........-55°C to +150°C
Storage Temperature Range.............................-55°C to +150°C
MAX3737
Multirate Laser Driver with Extinction
Ratio Control
ELECTRICAL CHARACTERISTICS (continued)(VCC= +2.97V to +3.63V, TA = -40°C to +85°C. Typical values are at VCC= +3.3V, IBIAS= 60mA, IMOD= 60mA, TA = +25°C, unless
otherwise noted.) (Notes 1, 2)
Note 1:AC characterization is performed using the circuit in Figure2 using a PRBS 223 - 1 or equivalent test pattern.
Note 2:Specifications at -40°C are guaranteed by design and characterization.
Note 3:Excluding IBIASand IMOD. Input data is AC-coupled. TX_FAULT open, SHUTDOWN open.
Note 4:Power-supply noise rejection (PSNR) = 20log10(Vnoise (on VCC)/∆VOUT). VOUTis the voltage across the 15Ωload when IN+ is high.
Note 5:The minimum required voltage at the OUT+ and OUT- pins is +0.75V.
Note 6:Guaranteed by design and characterization.
Note 7:Tested with 00001111 pattern at 2.7Gbps.
Note 8:DJ includes pulse-width distortion (PWD).
MAX3737
Multirate Laser Driver with Extinction
Ratio Control
Typical Operating Characteristics(VCC= +3.3V, CAPC= 0.01µF, IBIAS= 20mA, IMOD= 30mA, TA = +25°C, unless otherwise noted.)
MAX3737
Multirate Laser Driver with Extinction
Ratio Control
Typical Operating Characteristics (continued)(VCC= +3.3V, CAPC= 0.01µF, IBIAS= 20mA, IMOD= 30mA, TA = +25°C, unless otherwise noted.)
