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MIC3001BML

更新时间： 2024-11-19 04:15:47

品牌	Logo	应用领域
麦瑞 - MICREL		/
页数	文件大小	规格书
74页	346K
描述
SFP Management IC with Internal Calibration

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MIC3001

Micrel

MIC3001

SFP Management IC with Internal Calibration

General Description

Features

The MIC3001 enables the implementation of sophisticated,

hot-pluggable fiber optic transceivers with intelligent laser

control and an internally calibrated Digital Diagnostic Moni-

toring Interface per SFF-8472. It essentially integrates all

non-datapath functions of an SFP transceiver into a tiny

4mm × 4mm MLF™ package. It also works well as a

microcontroller peripheral in transponders or 10Gbps trans-

ceivers.

• APC or constant-current laser bias

• Turbo mode for APC loop start-up and shorter laser turn

on time

• Supports multiple laser types and bias circuit topologies

• Drives external low-cost BJT for laser bias

• Integrated digital temperature sensor

• Temperature compensation of modulation, bias, and

fault levels via NVRAM look-up tables

• Direct interface to SY88932, SY88982, SY89307 and

other drivers

• NVRAM to support GBIC/SFP serial ID function

• User writable EEPROM scratchpad

• Diagnostic monitoring interface per SFF-8472

– Monitors and reports critical parameters:

temperature, bias current, TX and RX optical power,

and supply voltage

A highly configurable automatic power control (APC) circuit

controls laser bias. Bias and modulation are temperature

compensated using dual DACs, an on-chip temperature

sensor, and NVRAM look-up tables. A programmable inter-

nalfeedbackresistorprovidesunprecedenteddynamicrange

for APC. Controlled laser turn-on facilitates hot-plugging.

An analog-to-digital converter converts the measured tem-

perature, voltage, bias current, transmit power, and received

power from analog to digital. An EEPOT provides frontend

adjustmentofRXpower.Eachparameteriscomparedagainst

user-programmed warning and alarm thresholds. Analog

comparators and DACs provide high-speed monitoring of

received power and critical laser operating parameters. Data

can be reported as either internally calibrated or externally

calibrated.

– S/W control and monitoring of TXFAULT, RXLOS,

RATESELECT, and TXDISABLE

– Internal or external calibration

– EEPOT for adjusting RX power measurement

• Power-on hour meter

• Interrupt capability

• Extensive test and calibration features

• 2-wire I C compatible serial interface

Aninterruptoutput,power-onhourmeter,anddata-readybits

add user friendliness beyond SFF-8472. The interrupt output

and data-ready bits reduce overhead in the host system. The

power-on hour meter logs operating hours using an internal

real-time clock and stores the result in NVRAM.

• SFP MSA and SFF-8472 compliant

• 3.0V to 3.6V power supply range

• 5V-tolerant I/O

• 4mm × 4mm 24-pin MLF™ package

Applications

• SFF/SFP optical transceivers

• SONET/SDH transceivers and transponders

• Fibre channel transceivers

• 10Gbps transceivers

• Free space optical communications

• Proprietary optical links

Communication with the MIC3001 is via an industry standard

2-wire serial interface. Nonvolatile memory is provided for

serial ID, configuration, and separate OEM and user

scratchpad spaces. Two-level password protection guards

against data corruption.

Ordering Information

Part Number

Junction Temp. Range

Package

MIC3001BML

–45°C to +105°C

24-pin MLF™

MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

August 2004

M9999-082404

12 3 4 5 6 7...74

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