Rainbow-electronics MAX3645 Bedienungsanleitung PDF herunterladen (Seite 1)

General Description

The MAX3645 limiting amplifier functions as a data

quantizer and is pin compatible with the Mindspeed

MC2045-2 and MC2045-2Y postamplifiers. The amplifi-

er accepts a wide range of input voltages and provides

constant-level positive emitter-coupled logic (PECL)

output voltages with controlled edge speeds.

The MAX3645 features an integrated power detector

with complementary PECL loss-of-signal (LOS) outputs

that indicate when the input power level drops below a

programmable threshold. An optional squelch function

holds the data outputs at static levels during a

LOS condition.

The MAX3645 operates from a single +3.3V or +5.0V

power supply over a -40°C to +85°C temperature

range. It is available in 16-pin SO and 16-pin QSOP

packages.

Applications

SONET 155Mbps Transceivers

Fast Ethernet Receivers

FDDI 125Mbps Receivers

FTTx Receivers

ESCON Receivers

Features

♦ Pin Compatible with the Mindspeed

MC2045-2/MC2045-2Y

♦ 500µV Input Sensitivity (BER = 10

-12

)

♦ Compatible with 4B/5B Data Coding

♦ Programmable LOS Threshold

♦ Stable LOS Threshold Over Supply Range

♦ Output Disable Function and Automatic Squelch

♦ Single +3.3V or +5.0V Power Supply

♦ 18mA Supply Current

MAX3645

+2.97V to +5.5V, 125Mbps to 200Mbps Limiting

Amplifier with Loss-of-Signal Detector

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-3026; Rev 0; 10/03

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.

PART TEMP RANGE PIN-PACKAGE

MAX3645ESE -40°C to +85°C 16 SO

MAX3645EEE -40°C to +85°C 16 QSOP

CAZ2

N.C.

CCE

DOUT+

DOUT-

GNDE

LOS

TOP VIEW

MAX3645

SO/QSOP

CAZ1

GNDA

CCA

DIN+

DIN-

CSD

DIS

LOS

Pin Configuration

MAX3645

MAX3644*

PIN K

OUT-

OUT+

DIN+

DIN-

GNDA

DOUT+

DOUT-

LOS

DIS

CSD

CCA CAZ1 CAZ2

GND

*FUTURE PRODUCT

CCE

TH GNDE

N.C.

0.1µF

1nF

0.1µF

100Ω

50Ω

50Ω 50Ω 50Ω

- 2V

Typical Application Circuit

1 2 3 4 5 6 7 8 9 10

Inhaltsverzeichnis

Seite 1 - PART TEMP RANGE PIN-PACKAGE

General DescriptionThe MAX3645 limiting amplifier functions as a dataquantizer and is pin compatible with the MindspeedMC2045-2 and MC2045-2Y postampl

Seite 2 - ELECTRICAL CHARACTERISTICS

MAX3645+2.97V to +5.5V, 125Mbps to 200Mbps LimitingAmplifier with Loss-of-Signal DetectorMaxim cannot assume responsibility for use of any circuitry o

Seite 3

MAX3645+2.97V to +5.5V, 125Mbps to 200Mbps LimitingAmplifier with Loss-of-Signal Detector2 ___________________________________________________________

Seite 4 - MAX3645 toc03

MAX3645+2.97V to +5.5V, 125Mbps to 200Mbps LimitingAmplifier with Loss-of-Signal Detector_____________________________________________________________

Seite 5 - - 1PRBS)

MAX3645+2.97V to +5.5V, 125Mbps to 200Mbps LimitingAmplifier with Loss-of-Signal Detector4 ___________________________________________________________

Seite 6 - Pin Description

MAX3645+2.97V to +5.5V, 125Mbps to 200Mbps LimitingAmplifier with Loss-of-Signal Detector_____________________________________________________________

Seite 7 - Applications Information

MAX3645Detailed DescriptionThe MAX3645 consists of gain stages, offset correction,power detector, LOS indicators, and PECL output buffers.See Figure 2

Seite 8 - Chip Information

The external autozero capacitor (CAZ), in parallel withinternal capacitance (CINT), determines the time con-stant of the DC offset correction loop. Wi

Seite 9 - Package Information

MAX3645+2.97V to +5.5V, 125Mbps to 200Mbps LimitingAmplifier with Loss-of-Signal Detector8 ___________________________________________________________

Seite 10 - QSOP.EPS

MAX3645+2.97V to +5.5V, 125Mbps to 200Mbps LimitingAmplifier with Loss-of-Signal Detector_____________________________________________________________

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Rainbow-electronics MAX3645 Bedienungsanleitung Seite 1

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Rainbow-electronics MAX3645 Bedienungsanleitung Seite 1

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