Rainbow-electronics MAX3941 Bedienungsanleitung PDF herunterladen

General Description

The MAX3941 is designed to drive an electro-absorp-

tion modulator (EAM) at data rates up to 10.7Gbps. It

incorporates the functions of a biasing circuit and a

modulation circuit, with integrated control op amps

externally programmed by DC voltages.

The integrated bias circuit provides a programmable

biasing current up to 50mA. This bias current reflects a

bias voltage of up to 1.25V on an external 50Ω load. The

bias and modulation circuits are internally connected on

chip, eliminating the need for an external bias inductor.

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 MAX3941 receives differential CML signals (ground

referenced) with on-chip line terminations of 50Ω. The

output has a 50Ω resistor for back termination and is

able to deliver a modulation current of 40mA

P-P

120mA

P-P

, with an edge speed of 23ps (20% to 80%

typ). This modulation current reflects an EAM modula-

tion voltage of 1.0V

P-P

to 3.0V

P-P

The MAX3941 also includes an adjustable pulse-width

control circuit to precompensate for asymmetrical EAM

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.

Features

♦ On-Chip Bias Network

♦ 23ps Edge Speed

♦ Programmable Modulation Voltage Up to 3V

P-P

♦ Programmable EAM Biasing Voltage Up to 1.25V

♦ Selectable Data-Retiming Latch

♦ Up to 10.7Gbps Operation

♦ Integrated Modulation and Biasing Functions

♦ 50Ω On-Chip Input and Output Terminations

♦ Pulse-Width Adjustment

♦ Enable and Polarity Controls

♦ ESD Protection

Applications

SONET OC-192 and SDH STM-64

Transmission Systems

DWDM Systems

Long/Short-Reach Optical Transmitters

10Gbps Ethernet

MAX3941

10Gbps EAM Driver with Integrated

Bias Network

________________________________________________________________ Maxim Integrated Products 1

MAX3952

0.01µF

DATA+ DATA+

PLRT GND

EAM

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 BIASSET

MODSET

BIASSET

330pF

-5.2V

0.1µF

-5.2V

MODEN

RTEN

50Ω

MAX3941

Typical Application Circuit

19-2935; 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

MAX3941ETG -40°C to +85°C

24-Thin QFN

(4mm x 4mm)

1 2 3 4 5 6 ... 10 11

Bias Network 1

Inhaltsverzeichnis

Seite 1 - Bias Network

General DescriptionThe MAX3941 is designed to drive an electro-absorp-tion modulator (EAM) at data rates up to 10.7Gbps. Itincorporates the functions

Seite 2

MAX3941Interface SchematicsFigures 7 and 8 show simplified input and output cir-cuits of the MAX3941 EAM driver.Exposed-Pad PackageThe exposed pad on

Seite 3

MAX394110Gbps EAM Driver with IntegratedBias NetworkMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied

Seite 4

MAX394110Gbps EAM Driver with IntegratedBias Network2 _______________________________________________________________________________________ABSOLUTE

Seite 5

MAX394110Gbps EAM Driver with IntegratedBias Network_______________________________________________________________________________________ 3ELECTRICA

Seite 6

MAX394110Gbps EAM Driver with IntegratedBias Network4 _______________________________________________________________________________________Figure 1.

Seite 7

MAX394110Gbps EAM Driver with IntegratedBias Network_______________________________________________________________________________________ 5Figure 3.

Seite 8

MAX394110Gbps EAM Driver with IntegratedBias Network6 _______________________________________________________________________________________Typical O

Seite 9

MAX394110Gbps EAM Driver with IntegratedBias Network_______________________________________________________________________________________ 7PULSE-WID

Seite 10

MAX3941Detailed DescriptionThe MAX3941 EAM driver consists of two main parts: ahigh-speed modulation driver and an EAM-biasingblock. The clock and dat

Seite 11

The input data is retimed on the rising edge of CLK+. IfRTEN is connected to ground, the retiming function is dis-abled and the input data is directly

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Rainbow-electronics MAX3941 Bedienungsanleitung

Stöbern Sie online oder laden Sie Bedienungsanleitung nach Kommunikation Rainbow-electronics MAX3941 herunter. Rainbow Electronics MAX3941 User Manual Benutzerhandbuch

Inhaltsverzeichnis

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