Rainbow-electronics MAX3942 User Manual download pdf

General 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 (ground-

referenced) 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 modula-

tion current of 40mA

P-P

to 120mA

P-P

, with an edge

speed of 23ps (typical 20% to 80%). This modulation cur-

rent 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 mod-

ulator characteristics. It is available in a compact 4mm

✕ 4mm, 24-pin thin QFN package and operates over

the -40°C to +85°C temperature range.

Features

♦ 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

Applications

Mach Zehnder Modulators

Packaged Direct-Modulated Lasers

SONET OC-192 and SDH STM-64 Transmission

Systems

DWDM Systems

Long/Short-Reach Optical Transmitters

10Gbps Ethernet

MAX3942

10Gbps Modulator Driver

________________________________________________________________ Maxim Integrated Products 1

MAX3952

0.01µF

DATA+ DATA+

PLRT GND

50Ω

0.01µF

DATA- DATA-

50Ω

0.01µF

CLK+ CLK+

OUT+

50Ω

0.01µF

CLK- CLK-

REPRESENTS A CONTROLLED-IMPEDANCE TRANSMISSION LINE.

-5.2V

50Ω

10Gbps

SERIALIZER

2kΩ

PWC+ PWC- V

MODSET

1000pF

-5.2V

0.1µF

-5.2V

MODEN

RTEN

50Ω

OUT-

50Ω

MAX3942

50Ω

0.01µF

MACH ZEHNDER

MODULATOR

L1 AND L2 ARE HIGH-FREQUENCY FERRITE BEADS

Typical Application Circuit

19-2934; Rev 0; 7/03

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.

Ordering Information

PART TEMP RANGE PIN-PACKAGE

MAX3942ETG -40°C to +85°C 24 Thin QFN (4mm

✕ 4mm)

Pin Configuration appears at end of data sheet.

1 2 3 4 5 6 7 8 9 10

10Gbps Modulator Driver 1

Summary of Contents

Page 1 - 10Gbps Modulator Driver

General DescriptionThe MAX3942 is designed to drive high-speed opticalmodulators at data rates up to 10.7Gbps. It functions asa modulation circuit, wi

Page 2

MAX394210Gbps Modulator DriverMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. N

Page 3

MAX394210Gbps Modulator Driver2 _______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSStresse

Page 4

MAX394210Gbps Modulator Driver_______________________________________________________________________________________ 3ELECTRICAL CHARACTERISTICS (con

Page 5

MAX394210Gbps Modulator Driver4 _______________________________________________________________________________________Figure 1. Definition of Single-

Page 6

MAX394210Gbps Modulator Driver_______________________________________________________________________________________ 5Figure 3. AC Characterization C

Page 7

MAX394210Gbps Modulator Driver6 _______________________________________________________________________________________DIFFERENTIAL VMOD vs. VMODSET(Z

Page 8

MAX394210Gbps Modulator Driver_______________________________________________________________________________________ 7Detailed DescriptionThe MAX3942

Page 9

MAX394210Gbps Modulator Driver8 _______________________________________________________________________________________The input data is retimed on th

Page 10

MAX394210Gbps Modulator Driver_______________________________________________________________________________________ 9Interface SchematicsFigures 5 a

Comments to this Manuals

No comments

Rainbow-electronics MAX3942 User Manual

Browse online or download User Manual for Communication Rainbow-electronics MAX3942. Rainbow Electronics MAX3942 User Manual

Summary of Contents

Comments to this Manuals

Related products and manuals for Communication Rainbow-electronics MAX3942