3.3V Burst-Mode Laser Driver and Integrated Limiting Amplifier with Eye-MinderTM Technology for Fiber-to-the-Premises M02090 2.5 Gbps laser driver and integrated limiting amplifier in a 5x5mm QFN package The M02090 is a highly integrated, programmable burstmode laser driver with a limiting amplifier intended for ONU/OLT applications up to 2.5 Gbps. The M02090 offers a single, flexible solution that addresses all PON applications of BPON, GEPON and GPON. Capable of independently driving 100 mA of modulation current and 80 mA of bias current, the laser driver in the > KEY FEATURES > Integrated 2.5 Gbps burstmode driver with limiting amplifier > Up to 100mA of modulation current and 80mA of bias current > Dual 2-wire interface enables operation independently or with an external microcontroller > Dual digital closed-loop architecture, enables real time extinction ratio control > 2.5 ns burst on/off time > Extended temperature range of -40C to +100C M02090 can independently control bias and modulation currents via the Eye-MinderTM, a dual closed-loop that maintains the target extinction ratio by compensating for laser aging, temperature, and voltage changes. Many features of the M02090 can be accessed through Open-loop and average closed-loop configurations are a 2-wire interface by an external microcontroller or the also supported. device can operate independently with an external EEPROM. The limiting amplifier inputs in the M02090 have selectable bandwidth. The input sensitivity is less than 3 mV at 1.25 Gbps, and less than 6 mV at 2.5 Gbps. The positive emitter-coupled logic (PECL) differential outputs achieve The M02090 is offered in a compact 32 pin, 5mm X 5mm QFN package and is specified over an extended operating temperature range of -40C to +100C. full swing at the minimum specified input signal. Also included are features such as programmable loss of signal, received signal strength indication and JAM function, which can be used to squelch chatter on the outputs when no signal is present. > Limiting Amplifier RxOUTP RxINP Limiting Amplifier Output Buffer RxOUTN RxINN Jam Biasing Iref Offset Cancel LOS LOS Threshold RSSI PK - PK SCL _ M Master Two-wire Interface DIN P DIN N Slave Twowire Interface Limiting Amplifier and Laser Driver Control Registers POR GND ADC BENN DIS Temp sensor OUTN Input Buffer Output Buffer Laser Driver Input Buffer IBIASOUT TX Disable Safety Logic (Fault Detection) Modulation and Bias Current Control Figure 1: M02090 functional block diagram Product Applications * Fiber-to-the-Premises * Passive Optical Networks - BPON, GEPON and GPON www.mindspeed.com/salesoffices General Information: (949) 579-3000 Headquarters - Newport Beach 4000 MacArthur Blvd., East Tower Newport Beach, CA 92660-3007 02090-BRF-001-A OUTP GND0 Laser Driver BENP V CC3T Imod SDA _S STSET RSSI SDA _ M SCL _S V CC3R Level Detect Comparator (c) 2006 Mindspeed TechnologiesTM. All rights reserved. Mindspeed and the Mindspeed logo are trademarks of Mindspeed Technologies. All other trademarks are the property of their respective owners. Although Mindspeed Technologies strives for accuracy in all its publications, this material may contain errors or omissions and is subject to change without notice. This material is provided as is and without any express or implied warranties, including merchantability, fitness for a particular purpose and non-infringement. Mindspeed Technologies shall not be liable for any special, indirect, incidental or consequential damages as a result of its use. IPIN FAIL