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Analog Devices solutions for Optical Networking

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  1. Analog Devices solutions for Optical Networking Analog Devices Proprietary

  2. Analog Solutions for Leading Communications Manufacturers Worldwide • Nortel Networks, Cisco, Ericsson, Lucent, and Motorola rely on ADI products everyday: • Amplifiers and converters • ADSL chipsets • High-performance mixed-signal and RF components for cellular handsets and base stations • High-speed components for fiber optic networks Analog Devices Proprietary

  3. Generic ADM - ADI Presence Backplane Interconnect Switch Fabric Framing/ Mapping Packet Processing Physical Layer Datapath MEMS Mirror Control TEC Controller APD Bias Controller Optical Power Monitor Optical Supervisor Control Crosspoint Switch, MEMS, FET I/P Amp, In Amp, MUX, ADC, DAC, DSP TIA, CDR, DEMUX, MUX/SYNTH, LDD, EEPOT, Log Amp, DC-DC Converter, ADC, DAC, DSP, MicroController Products Analog Devices Proprietary

  4. TIA SER / SYNTH FIBER Physical Layer ADSP21065L – Low Cost SHARC ADM7xx – Microprocessor Supervisor ADP333x – LDOs with Any-Cap ADM103x – Thermal Mgmt and Fan Ctrl ADN2820 – 10Gbps Trans-impedance Amp (TIA) AD8015 – 155 Mbps TIA Framer Digital ASIC Power Management PA DES CDR SerialData Digital X-POINT ADN2809 – PA + CDR (Multi-rate to 2.5Gbps) ADN2811 – 2.5/2.7 Gbps PA + CDR ADN2812 – Anyrate (10 Mbps to 2.7 Gbps ) Integrated PA+CDR ADN2815 – Integrated PA+CDR+DES/SER (10 Gbps) AD808– 622 Mbps PA + CDR AD807 – 155 Mbps PA + CDR AD800 – 52 Mbps CDR FIBER Coupler AD8150 – 33x17 Digital X-Point (1.5Gpbs) AD8151 – 33x17 Digital X-Point (3.2Gpbs) AD8152 34x34 Digital X-Point (3.2Gpbs) 1%- 5% Framer Digital ASIC Stratum Clock(PLLs, DDS’s) OpticalTap AD985x/3X – DDS uHz – 500MHz resolution 28/32-Bit Frequency and Phase programmable LDD AMP ADC / uConverter EEPOT ADuC812 – 8 Channel 12-bit ADC with uC AD747x – Low Cost 10 and 12-bit ADCs AD7671 – 1.2 MSPs, 16-Bit ADC ADSP218x – Low Cost, General Purpose DSP AD532x – Low Cost 12-bit DACs AD555X/4x – 14/16Bit Quad Iout DACs TEC CTRL AD8310 – 95dB Log Amp AD8304 – 160dB Log Amp AD620 – High Accuracy In-Amp AD622 – Low Cost In-Amp AD855x – <50nA bias, <5uV Offset, No Drift AD854X – <5pA bias, Low Power, low cost AD825 - 10pA bias Current AD8610 – 5pA Bias, 5fA /ÖHz, 6nV/ÖHz ADN2841 – 155 Mbps to 2.7Gbps Any Rate LDD with Dual Ctrl Loop (5V) ADN2847 – 155 Mbps to 3.3Gbps Any Rate LDD with Dual Ctrl Loop (3V) ADN2848 – 155 to 622 Mbps LDD with Dual Ctrl Loop (3V) ADN2843 – 10Gbps Any Rate LDD with Dual Ctrl Loop ADN2850 –Dual 10-bit Programmable non-volatile resistor (<35 ppm/C) ADN8830 – TEC Controller Analog Devices Proprietary

  5. ADI Optical Data Path Products Part No.FunctionSamplesRelease AD800 52 Mbps Clock and Data Recovery (CDR) Available Released AD8015 155 Mbps Transimpedance Amp (TIA) Available Released AD807 155 Mbps Post-Amp/CDR Available Released AD809 155 MHz VCO Available Released AD808 622 Mbps Post-Amp/CDR Available Released ADN2809 2.7 Gbps Multi-Rate Post-Amp / CDR Sept ‘01 4Q01 ADN2811 2.5 & 2.7 Gbps Post-Amp / CDR 1Q02 2Q02 ADN2820 10 Gbps TIA 4Q01 1H02 ADN2841 155Mbps to 2.7Gbps Anyrate Dual-Loop LDD (5V) Available 4Q01 ADN2847 155Mbps to 3.3Gbps Anyrate Dual-Loop LDD (3.3V) Nov ‘01 2Q02 ADN2848 155Mbps to 622Mbps Dual-loop LDD(3.3V) Dec ’01 2Q02 ADN2843 10.7Gbps LDD with Dual-loop Control, 4Q01 1H02 ADN2850 Dual Programmable Resistors (LDD calibration) Available 4Q01 Analog Devices Proprietary

  6. Multirate Clock and Data Recovery Unit (ADN2809) - Key Features • Multi-rate post-amp and clock-and-data recovery for: • OC-48 / OC-48-FEC • Gigabit Ethernet • OC-12 / OC-12-FEC • OC-3 / OC3-FEC • Also: OC-48/OC48 FEC only CDR (ADN2811) • Adjustable slicing level • Patented six-sigma design for jitter performance. Exceeds SONET/SDH requirements for: • Jitter tolerance • Jitter transfer • Jitter generation • Single reference clock frequency for all rates Analog Devices Proprietary

  7. ADN2809 Measured Performance Equipment Limitation! Analog Devices Proprietary

  8. OC-192 / OC-192 FEC Trans-Impedance Amplifier (ADN2820) - Key Features • Trans-impedance: 1400 ohms • Silicon Germanium • Low power dissipation: 100 mW typ • Bandwidth: 8 Ghz Data TIA PA DES CDR FIBER Clock • Input Current Noise: 1.2 uA • Sensitivity: -16dBm • Differential 50 ohm output • Single Bias 5 Volt Operation Analog Devices Proprietary

  9. OC-48 Laser Diode Driver (ADN2841/ADN2847) - Key Features • OC-48 Any Rate (155 Mbps – 3.3 Gbps) LDDs: • 2.7 Gbps 5V Any Rate (ADN2841) • 3.3 Gbps 3V Any Rate (ADN2847) • Closed loop control of laser diode average-power and extinction-ratio • Maintains optimal laser diode performance over: • Time (lifetime) • Temperature • Diode process variations • Diode supplier (enables diode 2nd source) • Reduces diode tuning time required at assembly. • High-current drive capability: • Imod up to 80 mA • Available in two package sizes: • 32-Pin CSP - 5mm x 5mm • 48-Pin CSP - 7mm x 7mm Analog Devices Proprietary

  10. OC-3/12 Laser Diode Drivers (ADN2848) - Key Features • Datarates from 155 Mbps to 622Mbps • 3.3v operation • Closed loop control of laser diode average-power and extinction-ratio • Maintains optimal laser diode performance over: • Time (lifetime) • Temperature • Diode process variations • Diode supplier (enables diode 2nd source) • Reduces diode tuning time required at assembly. • High-current drive capability: • Imod up to 80 mA • Available in 32-pin 5mm x 5mm CSP package ADN2848 Data LDD SER FIBER Clock Analog Devices Proprietary

  11. Laser Diode Driver - LDD THE LASER DIODE DRIVER MUST TRANSMIT THE SERIAL DATA BY DRIVING THE LASER DIODE MAINTAINING THE CORRECT DC BIAS AND AC MODULATION CURRENT VALUES. THIS IS DONE BY MONITORING THE CURENT FROM THE MONITOR PHOTO DIODE WHICH IS IN THE SAME PACKAGE AS THE LASER DIODE. Analog Devices Proprietary

  12. Laser Diode Transfer Function - Average Power and Ext Ratio • The optical signal swings between a high and low optical power, digital one and zero. • Average optical power assumes an equal number of ones and zeroes. • Extinction ratio defines the optical signal swing. Average Power = P1 + P0 2 Optical Power (mW) 25 oC Extinction Ratio = P1 P0 P1 Optical one Pav Optical Signal Po Optical zero Im Ib Current (mA) Electrical signal Analog Devices Proprietary

  13. Laser Diode Characteristics Change With Temperature • In an uncooled environment, a laser diode driver must compensate for these changes to maintain a constant optical output. Optical Power (mW) 0 oC 25 oC 70 oC Slope efficiency falls off Threshold current increases Current (mA) Analog Devices Proprietary

  14. Analog’s Dual Loop Capability – Allows Laser Driver to Automatically Compensate for Laser Diode Temperature Variations • The ADN2841 maintains constant optical output power levels for the “optical 1” and “optical 0” Optical Power (mW) Optical Power (mW) Increased Imod 25 oC 70 oC P1 P1 Increased Ibias Pav Pav Po Po Ibias Imod Ibias Imod Current (mA) Current (mA) Analog Devices Proprietary

  15. ADN2841 and ADN2847 Optical Performance Results Temperature Extinction Ratio Average Optical Power ( oC) ( dB ) (dBm ) -10 9.86 -3.59 0 9.84 -3.44 25 9.64 -3.06 40 9.55 -3.03 70 10.16 -3.35 Extinction Ratio Range = 0.61dB Average Power Range = 0.56 dB Notes: Laser used = Mitsubishi FU-445, ( typical tracking error = 0.5 dB ). Measurement taken from ADN2841 Optical Demo Board Rev C. www.analog.com Analog Devices Proprietary

  16. Optical Eye Diagram – ADN28415v operation 2.5 Gbps unfiltered optical eye at 25 oC, Mitsubishi FU-445 laser diode and ADN2841. Analog Devices Proprietary

  17. Optical Eye Diagram – ADN28415v operation 2.5 Gbps filtered optical eye at 25 oC, Mitsubishi FU-445 laser diode and ADN2841. Analog Devices Proprietary

  18. Optical Eye Diagram – ADN28473.3v operation 2.5 Gbps unfiltered optical eye at 25 oC, Mitsubishi FU-445 laser diode and ADN2847. Analog Devices Proprietary

  19. Optical Eye Diagram – ADN28473.3v operation 2.5 Gbps filtered optical eye at 25 oC, Mitsubishi FU-445 laser diode and ADN2847. Analog Devices Proprietary

  20. OC-192 / OC-192-FEC Laser Diode (ADN2843) Key Features ADN2843 +3.3V • 155Mbps to 10.7 Gbps operation • Direct Drive, no AC coupling required • 3.3Volt Operation • First 10 Gbps LDD to market with closed loop control of laser diode average-power and extinction-ratio • Leverages architecture developed for ADN2841 • High-current drive capability: • Imod up to 60 mA FIBER Data LDD SER Clock Analog Devices Proprietary

  21. Enables automated set-up of laser bias and modulation current levels Programmable laser calibration, minimizes setup time during assembly Non-volatile memory for set-point storage Industry’s lowest temperature coefficient by 10X (35 ppm/oC typical) 10-bit resolution - Largest range available. Full-scale values: 25 Kohms 250 Kohms Available in 2 package types: LFCSP - 5mm x 5mm, 16-pin TSSOP - 5mm x 6.5mm, 16-pin Dual Programmable Resistors (ADN2850) • ADN2850 used to set LDD nominal values for: • Average Power • Extinction Ratio By adjusting resistance value to ground on PSET and ERSET Analog Devices Proprietary

  22. Backplane Electronics Common Data Format Common Data Format SONET Frames ATM Cells XPT ASIC PHY XPT PHY ASIC Fiber Fiber N-1 N-1 ASIC PHY PHY ASIC N-1 N-1 ASIC PHY PHY ASIC N ASIC PHY 1 PHY ASIC OC3 Drop Card ATM Card Common Common Data Format Passive Serial Backplane Full Or Partial Mesh SONET Frames IP Packets Data Format XPT ASIC PHY XPT PHY ASIC Fiber N-1 Fiber N-1 ASIC PHY PHY ASIC N-1 N-1 ASIC PHY PHY ASIC N-1 ASIC PHY 2 PHY ASIC OC3 Drop Card IP Card SMPTE 259/292 Common Data Format SONET Frames XPT XPT PHY CODEC N-1 N-1 ASIC PHY ASIC N-1 N-1 ASIC PHY ASIC N-1 3 PHY CODEC Video Card OC12 Trunk Card Analog Devices Proprietary

  23. AD8152 X-streamTM34x34, 3.2 Gb/s/port Digital Crosspoint Switch • 3.2 Gb/s per Port NRZ Data Rate - Supports SONET, OC-48 Standard w/ FEC • Wide Power Supply Range: +2.5 V, +3.3 V - Programmable Iout up to 25mA • Lowest Power: <2.5W, No Heat Sink Required • 50 ohm Termination Resistors on-board • 34x34, Fully Differential, Non-blocking Array • Suitable for Giga-bit Ethernet and OC-48 optical network switching. • Fully differential signal path reduces jitter and crosstalk using singled ended voltage swing • Lowest cost solution for 3.2GB/s, 34x34 ($195) • Compact 256L SBGA package, 0°C to +85°C. • Also see AD8151: 33x17, 3.2 Gb/s/port Digital Crosspoint Switch, 184L LQFP Analog Devices Proprietary

  24. Erbium Doped Fiber Amplifier Isolator Coupler 1-5% Isolator Coupler 1-5% EDFA Control Loop (High Power) LOG AMPS AD8304 – 160dB Log Amp AD8310 – 95dB Log Amp Digital POT ADN2850 – Dual 10-bit EEPOT (<35 ppm/C) Transimpedance AMPs AD825 – 10pA Ibias AD8610 – 5pA Ibias Multiplexers ADG738/426 – 16 Channel Multiplexer (Low RON) ADG732 – 32 Channel Multiplexer (Low RON) DSPs ADSP-21065L – Low Cost SHARC ADSP218x/91 – Low Cost, General Purpose DSP ADSP-21161N – Low Cost SIMD SHARC TEC Controller ADN8830 TEC Controller ADCs AD767x – Family of 16-bit ADCs (Hi Precision AND Low Cost) AD747x – Low Cost 10 and 12-bit ADCs AD789x – Low Cost 12 and 14-bit ADCs DACs AD554x – Family of 16-bit DACs (Single and Quad) AD555x – Family of 14-bit DACs (Single and Quad) AD5532 – 14-bit DACs, 32 Channels DAC WDM WDM I/P Power adj O/P Power adj Pump Pump TEC TEC ADC DAC ADC DAC TEC Control LOG AMP ADC TEC DRV DAC LOG AMP TEC Control ADC DAC Ther Mon TEC DRV ADC DAC EEPOT Ther Mon TEC Bias ADC ADC EEPOT DSP TEC Bias ADC Analog Devices Proprietary

  25. Isolator Isolator Coupler 1% LOG AMP EDFA Control using uConverters Erbium Doped Fiber Amplifier Coupler WDM WDM WDM 1% Input Power adj Output Power adj Pump Pump Pump LOG AMP TEC TEC TEC TEC Control TEC Control TEC Control TEC DRV TEC DRV TEC DRV Vt set Ther Mon Ther Mon Ther Mon Vt set Vt set AMP RC RC AMP PWM 12B DAC 12B DAC PWM AMP 2x 12Bit DACs ADuC812 8052 Core SPI 8X 12Bit ADCs Analog Devices Proprietary

  26. ~ ~ ~ ~ ~ ~ REF MEMs Control & Measurement Control Electronics for a Cross-Connect Fabric ‘All ADI’ Closed Loop Mirror Control 250V 50uA 16-Bit DAC AD767X 16-Bit ADC ADG732 32:1 MUX 250V 50uA 14/16-Bit DAC Discrete Drivers Multi channel Inst Amps Multi channel 16-Bit DACs Multi channel MEMs Mirrors Multi channel Buffer Amps Multi channel FET I/P Amps ADSP21065L DSP AD767X 16-Bit ADC ADG732 32:1 MUX 16-Bit DAC 16-Bit DAC One Vref Per 32 (used for calibration) Analog Devices Proprietary

  27. 1% .. 5%tap of main power FIBER Measurement Amp 98% of power continues down fiber Vout ~ Pin OPTICAL COUPLER Traditional Methods Vbias Vbias Vbias Log Amp In - Amp TIA • Wide Range • Good Precision • Easy to Calibrate • Simple • High Speed pros • Simple • Good Precision • Poor Range • No Temp Comp • Requires Cal • Higher ASP • Lack of ICs • Limited Range • Requires Cal cons AD620, AD622, AD629, AMP02 AD825 – 10pA Ibias AD8610 – 5pA Ibias AD854X – 5pA Ibias AD8304 – 20MHz 160dB AD8310 – 500MHz, 92dB ADI Part Analog Devices Proprietary

  28. Benefit of AD8304 160dB Dynamic Range (100pA – 10mA) Logarithmic Amp versus a TIA Log Amp covers wide dynamic range, classical transimpedance amplifiers (TIAs) require a specific transresistance to cover a desired range. Analog Devices Proprietary

  29. ADN8830 TEC Controller Simplified Block Diagram Features: • High efficiency: >90%. • Low noise operation: < 1% ripple in TEC current • Frequency and phase compensation in the control loop. • Long term temperature stability: 0.01C. • Open/Short & thermal protection • Programmable maximum current limit. External Compensation Network P-Channel (Upper MOSFET) N-Channel PWM Control MOSFET Driver Thermistor Temp Measure Temp Set Current Limit Wave Locker Input P-Channel (Lower MOSFET) N-Channel OSC Voltage Reference Vref Phase Control Frequency Control Analog Devices Proprietary

  30. ADN8830 Application ANALOGDEVICES ADN8830 C2 R3 R1 C1 R2 L1 P1 C3 VCC NC SSTART COMPOSC SYNCIN R4 VTEC SYNCOUT Thermistor VLIM PGND VREF TEC_C N1 Rth NC TEC COMPSW1 THRMIN VSET R8 TEMPSET NC FREQ COMPSW2 AGND TEC_H R7 THRMFAULT P2 TEMPLOCK COMOUT TEMPOUT COMCTL COMIN SD N2 PH R9 Analog Devices Proprietary