QuickView

Technical Documents

Ordering Info

More Information

All

Data Sheet

FULL DATA SHEET (PDF, 376kB) Download   E-Mail

Description

The MAX3738 is a +3.3V laser driver designed for multirate transceiver modules with data rates from 1Gbps to 2.7Gbps. Lasers can be DC-coupled to the MAX3738 for reduced component count and ease of multirate operation. Laser extinction ratio control (ERC) combines the features of automatic power control (APC), modulation compensation, and built-in thermal compensation. The APC loop maintains constant average optical power. Modulation compensation increases the modulation current in proportion to the bias current. These control loops, combined with thermal compensation, maintain a constant optical extinction ratio over temperature and lifetime. The MAX3738 accepts differential data input signals. The wide 5mA to 60mA (up to 85mA AC-coupled) modulation current range and up to 100mA bias current range, make the MAX3738 ideal for driving FP/DFB lasers in fiber optic modules. External resistors set the required laser current levels. The MAX3738 provides transmit disable control (TX_DISABLE), single-point fault tolerance, bias-current 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 MAX3738 is compliant with the SFF-8472 transmitter diagnostic and SFP MSA timing requirements. The MAX3738 is offered in a 4mm x 4mm, 24-pin thin QFN package and operates over the extended -40°C to +85°C temperature range.

Key Features		Applications/Uses
Single +3.3V Power Supply 47mA Power-Supply Current 85mA Modulation Current 100mA Bias Current Automatic Power Control (APC) Modulation Compensation On-Chip Temperature Compensation Self-Biased Inputs for AC-Coupling Ground-Referenced Current Monitors Laser Shutdown and Alarm Outputs Enable Control and Laser Safety Feature		1Gbps/2Gbps Fibre Channel SFF/SFP and GBIC Transceivers Gigabit Ethernet SFF/SFP and GBIC Transceivers Multirate OC-24 to OC-48 FEC Transceivers

Diagram

Typical Operating Circuit

Application Notes

Application Note 3239: HFAN-02.5.0: Single-Ended vs Differential Methods of Driving a Laser Diode - MAX3738 Application Note 4227: HFAN-02.7.0 Reducing Laser Driver Output Noise When No Input Signal Is Applied - MAX3738

Evaluation Kits

MAX3738EVKIT

Design Guides

FIBER (PDF)

Reliability Reports

Show FIT data for: MAX3738 Request Reliability Report for: MAX3738

Software/Models

MAX3738ETG IBIS Model

Ordering Information
Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices: 1-4 of 4
MAX3738	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX3738ETG			THIN QFN;24 pin;17 mm² Dwg: 21-0139H (PDF) Use pkgcode/variation: T2444-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX3738ETG-T			THIN QFN;24 pin;17 mm² Dwg: 21-0139H (PDF) Use pkgcode/variation: T2444-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX3738ETG+			THIN QFN;24 pin;17 mm² Dwg: 21-0139H (PDF) Use pkgcode/variation: T2444+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX3738ETG+T			THIN QFN;24 pin;17 mm² Dwg: 21-0139H (PDF) Use pkgcode/variation: T2444+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

More Information

New Product Press Release 2004-01-26  Product Ad: MAX3738

Related Products

MAX3737 Multirate Laser Driver with Extinction Ratio Control

Didn't Find What You Need?

Next Day Product Selection Assistance from Applications Engineers Parametric Search Applications Help

QuickView

Technical Documents

Ordering Info

More Information

Description   Key Features   Applications/Uses   Key Specifications   Diagram

Data Sheet   Application Notes   Design Guides   Engineering Journals   Reliability Reports   Software/Models   Evaluation Kits

Price and Availability   Samples   Buy Online   Package Information   Lead-Free Information

Related Products   Notes and Comments   Evaluation Kits