MAX3942 10Gbps Modulator Driver

Description

The MAX3942 is designed to drive high-speed optical modulators at data rates up to 10.7Gbps. It functions as a modulation circuit, with an integrated control op amp externally programmed by a DC voltage.

A high-bandwidth, fully differential signal path is internally implemented to minimize jitter accumulation. When a clock signal is available, the integrated data-retiming function can be selected to reject input-signal jitter.

The MAX3942 receives differential CML signals (groundreferenced) with on-chip line terminations of 50Ω. Each of the differential outputs has an on-chip 50Ω resistor for back termination. The driver is able to deliver a modulation current of 40mA_P-P to 120mA_P-P, with an edge speed of 23ps (typical 20% to 80%). This modulation current reflects a modulation voltage of 1.0V_P-P to 3.0V_P-P single ended or 2.0V_P-P to 6.0V_P-P differential.

The MAX3942 also includes an adjustable pulse-width control circuit to precompensate for asymmetrical modulator characteristics. It is available in a compact 4mm x 4mm, 24-pin thin QFN package and operates over the -40°C to +85°C temperature range.

An evaluation kit is available: MAX3942EVKIT

Key Features

Applications/Uses

23ps Edge Speed
Single-Ended Modulation Voltage Up to 3V_P-P
Differential Modulation Voltage Up to 6V_P-P
Selectable Data-Retiming Latch
Up to 10.7Gbps Operation
50Ω On-Chip Input and Output Terminations
Pulse-Width Adjustment
Enable and Polarity Controls
ESD Protection

	10Gbps Ethernet
	DWDM Systems
	Long/Short-Reach Optical Transmitters
	Mach Zehnder Modulators
	Packaged Direct-Modulated Lasers
	SONET OC-192 and SDH STM-64 Transmission Systems

Key Specifications: Laser Drivers

Part Number

Target Oper. Range
(Gbps)

Data Rate
(Mbps)

V_SUPPLY
(V)

I_CC
(mA)

I/O Type

I_MOD
(mA)

EV Kit

Package/Pins

Price

max

typ

max

See Notes

MAX3942

5 to >10

10700

-5.2

140

CML

PECL

120

Yes

TQFN/24

$64.00 @1k

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Diagram

Typical Application Circuit

Application Notes

Application Note 3766: HFTA-12.0: Measuring Crosstalk Penalty in High-Speed Bidirectional Serial Communication Modules - MAX3942

Evaluation Kits

MAX3942EVKIT

Design Guides

Fiber (PDF)

Reliability Reports

Reliability Report: MAX3942.pdf

Show FIT data for:

Software/Models

none

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

MAX3942 Free
Sample Buy Status

Package: TYPE PINS FOOTPRINT

DRAWING CODE/VAR *

Temp RoHS/Lead-Free?
Materials Analysis

MAX3942ETG

Active TQFN;24 pin;17 mm²
Outline Drawing: 21-0139 (PDF)
Land Pattern: 90-0021 (PDF)
Use pkgcode/variation: T2444-3*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis

MAX3942ETG-T

Active

Land Pattern: Not Available

-40°C to +85°C See data sheet

MAX3942ETG+

Active TQFN;24 pin;17 mm²
Outline Drawing: 21-0139 (PDF)
Land Pattern: 90-0021 (PDF)
Use pkgcode/variation: T2444+3*
-40°C to +85°C RoHS/Lead-Free: Lead Free
Materials Analysis

MAX3942ETG+T

Active

Land Pattern: Not Available

-40°C to +85°C See data sheet

More Information

New Product Press Release 2003-08-04

Related Products

MAX3940 10Gbps EAM Driver with Integrated Bias Network
MAX3941 10Gbps EAM Driver with Integrated Bias Network
MAX3942 10Gbps Modulator Driver

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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

Document Ref.: 19-2934; Rev 1; 2007-06-20
This page last modified: 2009-10-08