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M02097-12 Scheda tecnica(PDF) 1 Page - List of Unclassifed Manufacturers |
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M02097-12 Scheda tecnica(HTML) 1 Page - List of Unclassifed Manufacturers |
1 / 21 page 02097-DSH-001-C Mindspeed Technologies ® November 2006 Preliiminary Information/Mindspeed Proprietary and Confidential M02097-11/-21 3.3/5V LED Driver / Limiting Amplifier for Operation to 500 Mbps Preliminary Information This document contains information on a new product. The parametric information, although not fully characterized, is the result of testing initial devices. Applications • 155Mbps LAN ATM Transceivers • ESCON Receivers • Fast Ethernet/FDDI • Multimode LED Transmitters • SFP Transceivers • IEEE 1394 S100, S200 and S400 Transceivers Features • High speed operation; suitable for applications to 500 Mbps. 200 ps typical rise/fall time into 5 Ω. • Programmable modulation current to 120 mA • Integrated power supply switch for redundant shutdown under a fault condition The M02097 is an integrated LED driver and limiting amplifier for applications to 500 Mbps. The LED driver modulation output can be AC or DC coupled to an LED. The device can operate from a 3.3V or 5V supply. The M02097 includes monitors for bias and modulation current. Integrated safety circuitry provides latched bias and modulation current shutdown if a fault condition is detected and provides an internal VCC switch. The limiting amplifier also includes a programmable signal-level detector, allowing the user to set thresholds at which the logic outputs are enabled. The M02097-11 features a PECL LOS-ST output while the M02097-21 features a CMOS (external pull-up required) LOS-ST output. PECL outputs are available on the limiting amplifier. Configuration logic provides flexibility in setting data path polarity, safety logic configuration, and LOS behavior. M02097 Block Diagram VCC3T SVCC OUT+ OUT- GND0 PBOUT Input Buffer DIN- DIN+ TX Disable RESET VCCT GND 3.3V Regulator with Bypass To Safety Logic To Safety Logic VCC VCC3 Laser Driver MODSET LED Pre-Bias Control Threshold Setting Circuit Biasing RxOUTp RxOUTm RSSI LOS-ST RxINm Iref RxINp VCCR STSET Offset Cancel DCR_Disable Limiting Amplifier SCB Safety Circuitry with Latched Fault Output Buffer Tx_Polarity Rx_Polarity CONFIG_2 Tx_Polarity Rx_Polarity CONFIG_3 CONFIG_1 DCR_Disable TCSLOPE TCSTART LOS-to-JAM CONFIG_4 LOS-to-JAM LOS-ST_sel LOS-ST_sel LOS Level Detect Comparator VCC3R Configuration Logic Modulation Control Vttx 4k Ω 4k Ω Vttr 2k Ω 2k Ω Output Buffer Regulator with Bypass CMOS/TTL (-21) PECL (-11) PECL Features (con’t) • Temperature compensation for modulation current • Pre-bias adjustment to improve LED edge speed • SFP compliant safety circuitry (configurable) • 6mV input limiting amp sensitivity at 500 Mbps. • PECL limiting amplifier outputs • Limiting amplifier includes integrated DC offset cancellation circuit • Polarity Control for both the driver and limiting amplifier data paths • Operates with 3.3V or 5V supply with an internal auto-sensing regulator that enables with 5V supplies and is bypassed with 3.3V supplies • Powers 3.3V ROSAs from its Receiver Regulator output enabling true 3.3/5V designs using all 3.3V Mindspeed TIAs |
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