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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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MIC3003 데이터시트(PDF) 1 Page - Micrel Semiconductor |
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MIC3003 데이터시트(HTML) 1 Page - Micrel Semiconductor |
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1 / 75 page  MIC3003 FOM Management IC with Internal Calibration MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( 408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com November 2009 M9999-111209-C hbwhelp@micrel.com or (408) 955-1690 General Description The MIC3003 is a fiber optic module controller which enables the implementation of sophisticated, hot-pluggable fiber optic transceivers with intelligent laser control and an internally calibrated Digital Diagnostic Monitoring Interface per SFF-8472. It essentially integrates all non-datapath functions of an SFP transceiver into a tiny (4mm x 4mm) MLF ® package. It also works well as a microcontroller peripheral in transponders or 10Gbps transceivers. 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 internal feedback resistor provides a wide dynamic range for the APC. Controlled laser turn-on facilitates hot plugging. An analog-to-digital converter converts the measured temperature, voltage, bias current, transmit power, and received power from analog to digital. An EEPOT provides front-end adjustment of RX power. Each parameter is compared against user-programmed warning and alarm thresholds. Analog comparators and DACs provide fast monitoring of received power and critical laser operating parameters. Data can be reported as either internally calibrated or externally calibrated. An interrupt output, power-on hour meter, and data-ready bits 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. In addition to the features listed above which are already implemented in the previous MIC300x controllers, the MIC3003 features an extended temperature range, options to mask alarms and warnings interrupt and TXFAULT, a reset signal source, and the ability to support up to four chips with the same address on the serial interface. It also supports eight-byte SMBus block writes. Communication with the MIC3003 is via an industry standard 2-wire SMBus serial interface. Nonvolatile memory is provided for serial ID, configuration, and separate OEM and user scratchpad spaces. Datasheets and support documentation can be found on Micrel’s web site at: www.micrel.com. Features • Extended temperature range • Alarms and warnings interrupt and TXFAULT masks • Capability to support up to four MIC3003 on one SMBus • 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 • Integrated digital temperature sensor • Temperature compensation of modulation, bias, bias fault and alarm thresholds via NVRAM look-up tables • NVRAM to support GBIC/SFP serial ID function • User writable EEPROM scratchpad • Reset signal compatible with some new systems requirements • Diagnostic monitoring interface per SFF-8472 – Monitors and reports critical parameters: temperature, bias current, TX and RX optical power, and supply voltage – 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 SMBus-compatible serial interface • SFP/SFP+ MSA and SFF-8472 compliant • 3.0V to 3.6V power supply range • 5V-tolerant I/O • Available in (4mm x 4mm) 24-pin MLF ® package Applications • SFP/SFP+ optical transceivers • SONET/SDH transceivers and transponders • Fibre Channel transceivers • 10Gbps transceivers • Free space optical communications • Proprietary optical links |
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