MIC3001 FOM Management IC with Internal Calibration Consider MIC3003 for New Designs General Description Features The MIC3001 enables the implementation of sophisticated, APC or constant-current laser bias hot-pluggable fiber optic transceivers with intelligent laser Turbo mode for APC loop start-up and shorter laser turn control and an internally calibrated digital diagnostic on time monitoring interface per SFF-8472. It essentially integrates Supports multiple laser types and bias circuit topologies all non-data path functions of an SFP transceiver into a Drives external low-cost BJT for laser bias tiny (4mm 4mm) QFN package. Integrated digital temperature sensor A highly-configurable automatic power control (APC) Temperature compensation of modulation, bias, and circuit controls laser bias. Bias and modulation are fault levels via NVRAM look-up tables temperature compensated using dual DACs, an on-chip temperature sensor, and NVRAM look-up tables. A Direct interface to SY88932, SY88982, SY89307 and programmable internal feedback resistor provides other drivers unprecedented dynamic range for APC. Controlled laser NVRAM to support GBIC/SFP serial ID function turn-on facilitates hot plugging. User writable EEPROM scratchpad An analog-to-digital converter converts the measured Diagnostic monitoring interface per SFF-8472 temperature, voltage, bias current, transmit power, and Monitors and reports critical parameters: received power from analog to digital. An EEPOT provides temperature, bias current, TX and RX optical front-end adjustment of RX power. Each parameter is power, and supply voltage compared against user-programmed warning and alarm thresholds. Analog comparators and DACs provide high- S/W control and monitoring of TXFAULT, RXLOS, speed monitoring of received power and critical laser RATESELECT, and TXDISABLE operating parameters. Data can be reported as either Internal or external calibration internally calibrated or externally calibrated. EEPOT for adjusting RX power measurement An interrupt output, power-on hour meter, and data-ready Power-on hour meter bits add user friendliness beyond SFF-8472. The interrupt Interrupt capability output and data-ready bits reduce overhead in the host Extensive test and calibration features system. The power-on hour meter logs operating hours 2 using an internal real-time clock and stores the result in 2-wire, I C-compatible serial interface NVRAM. SFP MSA and SFF-8472 compliant Communication with the MIC3001 is via an industry 3.0V to 3.6V power supply range standard 2-wire serial interface. Nonvolatile memory is 5V-tolerant I/O provided for serial ID, configuration, and separate OEM 4mm 4mm 24-pin QFN package and user scratchpad spaces. Two-level password protection guards against data corruption. Data sheets and support documentation can be found on Applications Micrels web site at: www.micrel.com. SFF/SFP optical transceivers SONET/SDH transceivers and transponders Fibre channel transceivers 10Gbps transceivers Free space optical communications Proprietary optical links MLF and MicroLeadFrame are registered trademarks of Amkor Technology Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. MIC3001 Ordering Information Lead Part Number Package Type Junction Temperature Range Package Marking Finish Sn-Pb or MIC3001BML 24-Pin QFN 3001 45C to +105 C NiPdAu (1) Sn-Pb or MIC3001BMLTR 24-Pin QFN 3001 45C to +105 C NiPdAu 3001 with Pb-Free Bar-Line MIC3001GML 24-Pin QFN 45C to +105 C NiPdAu Indicator (1) 3001 with Pb-Free Bar-Line MIC3001GMLTR 24-Pin QFN NiPdAu 45C to +105 C Indicator Note: 1. Tape and Reel. M9999-082404-A August 2004 3 hbwhelp micrel.com or (408) 955-1690