mic3003g数据手册集成电路（IC）的激光驱动器规格书PDF

描述 Description

FOM Controller with Internal Calibration

The MIC3003 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-data path functions of an SFP transceiver into a tiny (4mm x 4mm) QFN package. 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 unprecedented dynamic range for 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 high-speed 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.

特性 Features

• 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, and fault levels via NVRAM look-up tables
• 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
• 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, I2C-compatible serial interface
• SFP MSA and SFF-8472 compliant
• 3.0V to 3.6V power supply range
• 5V-tolerant I/O
• 4mm x 4mm 24-pin QFN package

简介

mic3003g属于集成电路（IC）的激光驱动器。由制造生产的mic3003g激光驱动器激光驱动器电源管理集成电路 (PMIC) 可用于提供一个或多个受控电流源，以从标称恒定电压电源为半导体激光器件供电。产品通常支持通过监控受驱动的激光器件发出的光功率而得到反馈，可广泛应用于光通信系统中；并因具有对提供给用电设备的电流进行高频调制的能力，而与执行类似功能的器件区分开来。