M02095G-12

M02095/6 3.3/5V Laser Driver / Limiting Amplifier for Operation to 2.5 Gbps The M02095 and M02096 are integrated laser drivers and limiting amplifiers for applications to 1.25 Gbps and 2.5 Gbps, respectively. The laser driver modulation output can be AC or DC coupled to an FP/DFB laser. The devices can operate from a 3.3V or 5V supply. The devices include monitors for bias and laser power. Integrated safety circuitry provides latched bias and modulation current shutdown if a fault condition is detected and provides an internal V switch. CC The limiting amplifier also includes a programmable signal-level detector, allowing the user to set thresholds at which the logic outputs are enabled. PECL or CML outputs are available on the limiting amplifier. Configuration logic provides flexibility in setting data path polarity, safety logic configuration, and LOS behavior. Features (cont) Applications 2.5 Gbps STM-16/OC-48 SDH/SONET (M02096) Integrated power supply switch for redundant shutdown under a fault condition 1.06 and 2.12 Gbps Fibre Channel (M02095/6) Temperature compensation for modulation current 1.25 Gbps Ethernet (M02095/6) Automatic Power Control 1.25 Gbps SDH/SONET (M02095/6) SFP compliant safety circuitry (configurable) 2.67 Gbps SDH/SONET with FEC (M02096) 3.3 mV typical input limiting amp sensitivity at 2.5 Gbps SDH/SONET 155 Mbps Transceivers CML or PECL limiting amplifier outputs FTTx and Media Converters Limiting amplifier includes integrated DC offset cancellation circuit Polarity Control for both the driver and limiting amplifier data paths Features Operates with 3.3V or 5V supply with an internal auto-sensing High speed operation suitable for applications to 2.5 Gbps. 55 ps regulator that enables with 5V supplies and is bypassed with 3.3V typical rise/fall time into 25 supplies Independently programmable bias and modulation currents Powers 3.3V ROSAs from its Receiver Regulator output enabling Modulation current to 85 mA and bias current to 100 mA true 3.3/5V designs using all 3.3V Mindspeed TIAs M02095/6 Typical Applications Diagram V CC VCC3R STSET V R CC VCC3R Threshold Regulator Setting AC-Coupled to TIA Circuit RxINp RxOUTp Clock Data 2k Output Limiting Recovery Vttr RxINm M0201x RxOUTm Buffer Amplifier 2k Unit Photodiode Rx Polarity LOS-ST Offset Cancel Iref Level Biasing AC or DC Coupled Detect (as described in LOS Comparator Applications Information) RSSI LOS-ST sel DCR Disable LOS-to-JAM VCC To Safety V T CC Logic VCC3T 3.3V Regulator with Bypass TC START To Safety Modulation Logic TCSLOPE SV CC Control MODSET OUT- DIN+ 4k Output DeMux Input Laser OUT+ Vttx Buffer Output Buffer Driver DIN- 4k GND 0 CONFIG 1 Tx Polarity BIAS Mon Analog Rx Polarity V V MUX CC CC3 CONFIG 2 Tx Polarity Configuration TxPwrMon Configuration Control DCR Disable Logic CONFIG 3 (V , GND IBOUT CC SCB or Float) LOS-to-JAM Safety CONFIG 4 Laser Power Control Circuitry with Latched Fault TX IPIN LOS-ST sel Disable GND RESET V 3T CC 02095-DSH-001-E Mindspeed Technologies August 2007 Mindspeed Proprietary and Confidential DIS FAIL C APC APCSET TxPwrMON BIAS MON IBOUT RxINp IPIN RxINm Config1 APC SET TxPwr Config2 MON BIAS Config3 MON MOD Config4 SET LOS-ST DIS I FAIL REF Ordering Information Part Number Package Operating Temperature M02095G-XX* QFN32 40C to 95C M02096G-XX* QFN32 40C to 95C * The letter G designator after the part number indicates that the device is RoHS-compliant. Refer to www.mindspeed.com for additional information. Revision History ASIC Revision Level Date Description Revision E Release August 2007 -12 Finalize limiting amplifier jitter specifications, combine laser driver and limiting amplifier supply current together in Table 1-3. D Preliminary May 2007 -12 Add TxPwrMon and BIAS pins to device. Update DC specifications, Functional MON Description and Applications Information. C Preliminary November 2006 -11 Reflect current device pinout. B Advance August 2006 -11 Update several specifications based on initial device evaluation. A Advance June 2006 NA Initial Release. M02096 2.5 Gbps Laser Driver Eye Diagram M02095/6 Pin Configuration 32 31 30 29 28 27 26 25 1 RxOUTm VCC3R 24 ST RxOUTp SET 2 23 V R CC CAPC 22 3 VCCT V 3T 4 CC 21 GND TC SV 5 SLOPE CC 20 TC START OUTN 6 19 DINp OUTP 18 7 DINm GNDO 8 17 9112 13 14 156 10 11 02095-DSH-001-E Mindspeed Technologies 2 Mindspeed Proprietary and Confidential