Piet De Pauw Chairman Melexis Opto Division 9th MOST Interconnectivity Conference Asia Seoul Korea November 5, 2008 © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved 150 Mbps Fiber Optic Transceivers for MOST Why Melexis in 150 Mbps MOST? MLX75605 Fiber Optic Transceiver Receiver Transmitter Package Availability and Conclusions © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Melexis 150 Mbps Fiber Optic Transceivers for MOST Why Melexis in 150 Mbps MOST? Two types of 150 Mbps Fiber Optic Transceivers Receiver Transmitter 24 pin SOIC Package Availability and Conclusions © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Melexis 150 Mbps Fiber Optic Transceivers for MOST © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Automotive market is around 70% of Melexis sales. © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Fully ISO/TS 16949 Qualified Melexis Automotive Network Transceivers LIN LIN transceivers • Single and multi channel LIN System Basis Chips (SBC) Transceiver + Voltage Regulator + … Configurable LIN slaves • • Switch modules and contact monitoring Express down window lift, rear wiper control, small pumps, … ROM programmable LIN slaves • ASICs Flash LIN slaves • • • • • • Headlamp swiveling, HVAC flaps Anti pinch window lift Complete door modules Electric parking brake Seat positioning, seat heat/vent. Seat belt retractor, … LIN products developed in close collaboration with Vehicule Manufacturers in Europe, US and Asia. © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved • Melexis Automotive Network Transceivers GM LAN transceiver: TH8056 Melexis Device TH8056 approved for GM LAN gen 2.x Melexis Shipping 3Mio parts per month © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved GM LAN: GM specific Single Wire CAN standard Optoelectronics Optoelectronics sales sales is is around around 30 30 Million Million EUR/year. EUR/year. Key-less Entry Headlight Control Optical Switch MLX75303 Light-to-Frequency Converter MLX75304 Anti-Glare Mirror Light-to-Frequency Converter MLX75304 Rain Sensor ASIC Linear Array MLX90255 APPLICATION FUSION Exterior view: Night Vision Adaptive Cruise Control Lane Departure Warning Traffic Sign Recognition Interior view: Driver Drowsiness Smart Airbag Deployment Sunload Sensor ASIC Camera MLX75307 Console Light Control Display Brightness Control Light-to-Voltage/Frequency Converter MLX75304/305 Switch & Rotary Buttons Steering Controls Optical Switch MLX75303 Steering Wheel Angle Sensing Steering Wheel Torque Sensing Linear Array MLX90255, ASIC Optical Switch MLX75303 © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Fuel Composition Analysis Melexis Linear Array © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Melexis Melexis Automotive Automotive Optoelectronic Optoelectronic Products Products Compatible Compatible to to SMD SMD solder solder processes processes and and ambient ambient temperatures temperatures -40C -40C to to +125C +125C Melexis Melexis Optoelectronic Optoelectronic components components for for Steering Steering Angle Angle and and Torque Torque Sensing Sensing Melexis LED Driver © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Melexis Automotive LED Drivers Why Melexis in 150 Mbps MOST? Two types of 150 Mbps Fiber Optic Transceivers Receiver Transmitter 24 pin SOIC Package Availability and Conclusions © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Melexis 150 Mbps Fiber Optic Transceivers for MOST 650 nm wavelength 150 Mbps speed Compatible to 1 mm PMMA POF © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved 150 Mbps Fiber Optic Transceiver 1) Two packages: RX and TX, which are insertion components RX in a 7 pin Sidelooker package And TX in a 7 pin Sidelooker package 2) Both RX and TX integrated into a single Package. Package is compatible with Surface mount PCB assembly technology. 24 pin SOIC package © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved 2 types of Fiber OPtic Transceivers Mark-up © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Supply Chain when using FOT’s in Sidelooker Package Three steps: Body size 7.5 mm x 15.6 mm Footprint compatible with JEDEC Standard package R-PDSO-G © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Both Receiver and Transmitter integrated into a single component SMD Transceiver Connection to Pigtail (24 pin SOIC Package) Pigtail connecting FOT and MOST connector Integrated ferrule clamp Fiber Optic Transceiver (FOT) in 24 pin SOIC Withstands leadfree SMD solder processes © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved MOST 2+x (x= 4, 12, 20,…) connector Features 3.3 V power supply • Low signal amplitude: LVDS inputs and outputs • Short leads = poor antenna Fully optical tested Operating temperature range -40C to 95C © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Low EMI electrical connections: Mark-up © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Supply Chain when using FOT’s in 24 pin SOIC Two Steps: Why Melexis in 150 Mbps MOST? Two types of 150 Mbps Fiber Optic Transceivers Receiver Transmitter 24 pin SOIC Package Availability and Conclusions © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Melexis 150 Mbps Fiber Optic Transceivers for MOST © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Melexis 150 Mb/s Fiber Optic Receiver MLX75603 mounted in 24 pin SOIC Package © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved 150 Mbps Receiver MLX75603AA Block Diagram Integration of PD results in: • High immunity to EMI • Lower assembly costs © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Integrated PIN Photo Diode Receiver IC Bandwidth over supply voltage range Minimum -3 dB bandwidth needed for application MLX75603AA Analog path bandwidth at 95degC over supply range -1.0 1 10 100 1000 Attenuation (dB) -3.0 -5.0 3,0V -7.0 3,3V -9.0 3,6V -11.0 -13.0 -15.0 -17.0 Frequency (kHz) Bandwidth of receiver is as targeted for optimal receiver sensitivity performance (optimal bandwidth = 2/3 * data rate = 2/3 * 150 MHz = 100 MHz) And Bandwidth of receiver does not vary with temperature. If bandwidth is too small: loss of signal, therefore loss of sensitivity If bandwidth is too high: receiver generates excessive noise, which then results in a reduction of sensitivity. © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved 1.0 At end face of optical contact of optical connector (called SP3) we measure Coupled Optical Power. This means sensitivity includes pigtail losses as well as optical coupling loss between pigtail and Photo diode. At OEC electrical output pins (called SP4) we measure LVDS signal © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Receiver Performance Measurements Transmitter maximum Power: -1.5 dBm Transmitter Minimum Power: - 6.5 dBm Maximum Pigtail loss 1.5 dB: - 8 dBm (SP2) Budget for Link loss: 14 dB (2x2.5 dB connector losses + 2x2 dB in line connectors + 4.5 dB POF losses > 15m): - 22 dBm (SP3) Maximum Pigtail loss 1.5 dB: - 23.5 dBm Minimal Receiver Sensitivity: - 23.5 dBm © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Optical Budget over Full Temperature Range -40C to +95C Receiver eye diagram performed at -26dBm light power Vdd=3.3V -40 degC with speed enhancement block © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved 150 Mbps Receiver MLX75603AA SP4 Eye Mask Why Melexis in 150 Mbps MOST? Two types of 150 Mbps Fiber Optic Transceivers Receiver Transmitter 24 pin SOIC Package Availability and Conclusions © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Melexis 150 Mbps Fiber Optic Transceivers for MOST © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Melexis 150 Mb/s Fiber Optic Transmitter MLX75604 mounted in 24 pin SOIC Package Transmitter during Power ON © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Melexis 150 Mb/s Fiber Optic Transmitter MLX75604 mounted in 24 pin SOIC Package Light source Requirements 1. (RC)LED should be able to couple at least 0.5mW in 1mm PMMA POF. 2. Temperature dependence of light emitted power Lower than |-0.9| %/K 2 3. Fall/rise time should be as low as possible but it is sufficient to be close to spec requirements i.e. tr and tf <4ns. Using pre-emphasis the (RC)LED rise and fall times can be reduced within spec. Popt, dBm 0 -2 -4 -6 -8 -10 -50 0 50 Temperature, °C 7.8mA Conclusion: Only a small number of (RC)LED types available on the market today are useful. 100 16mA 25.7mA 150 © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved 4 (RC)LED Bandwidth Enhancement • Rise time is determined by the time needed to build-up a minority carrier concentration within the RCLED, corresponding to the light level selected. • Fall time is determined by the minority carrier concentration and the minority carrier lifetime within the RCLED. (RC)LED bandwidth is boosted using pre-emphasis. i.e. a current peak during rising and falling edge. (RC)LED drive current is obtained by summing two currents: a Modulation current and a Pre-emphasis current. © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved (RC)LED characteristics: 150 Mbps Transmitter IC MLX75604AA Block Diagram min3dB CONTROL LVDS receiver Buffer INPUT+ Swing control led driver with swing control and common-mode feedback Vcm Ibias Imod Commun. circuit Modulation current generator Peaking circuit Bias current generators VCC GND Zapping circuit Settings Bandgap current generator © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved INPUT- Coupled Coupled Power Power into into 1mm 1mm PMMA PMMA SI SI POF POF for for different different Imod Imod settings settings (MLX75604 (MLX75604 die die driving driving a a 650 650 nm nm RCLED RCLED packaged packaged in in TO TO can can with with lens) lens) Using the appropriate temperature coefficient for the RCLED modulation current, the MLX75604 die can be trimmed so that the optical power variation of the RCLED over the temperature range [-40C, +95C] can stay within a 2 dB wide band. At the highest RCLED heat sink temperatures, and the highest RCLED drive currents, RCLED slope efficiency becomes very small. Output optical power vs Temperature, (TC1 = 15) Output optical power vs Temperature, (TC1 = 0) 1 2 0 1 Optical Power, dBm Imod = 3 -2 Imod = 7 Imod = 12 -3 Imod = 15 -4 Imod = 19 -5 Imod = 23 Imod = 28 -6 Imod = 31 Optical Power, dBm Imod = 0 Imod = 0 -1 0 Imod = 3 Imod = 7 -1 Imod = 12 -2 Imod = 15 Imod = 19 -3 Imod = 23 Imod = 28 Imod = 31 -4 -5 -6 -7 -40 -8 -25 -10 5 20 35 Temperature, C -40 -25 -10 5 20 35 50 65 80 95 Temperature, C Two trimming conditions for temperature coefficient (TC) of the RCLED Modulation current: Minimal TC, TC1 = 0 (left curves) and Maximal TC, TC1= 15 (right curves) 50 65 80 95 © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved RCLED Optical Power coupled into 1 mm PMMA SI POF is suitable for 150 Mbps MOST applications. Optical Power over Temperature MLX75605AA Optical power over temperature into 1mm PMMA SI POF 0 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 -1 -3 -4 -5 -6 -7 Trimmed optical power Untrimmed optical power -8 Temperature (degC) Modulation current through RCLED: 10mA (-40C), 15 mA (20C), 25 mA (105C) © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Optical power (dB) -2 © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Optical Power over Temperature and the -3 dB function MLX75604 (RC)LED Driver Die Concept Extended test modes e.g. allowing direct access to RCLED terminals. © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved On chip trimming structures At EOC electrical intput pins (called SP1) we measure LVDS signal At end face of optical contact of optical connector (called SP2) we measure Radiated optical power © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Transmitter Performance Measurements Transmitter maximum Power: -1.5 dBm Transmitter Minimum Power: - 6.5 dBm Maximum Pigtail loss 1.5 dB: - 8 dBm (SP2) Budget for Link loss: 14 dB (2x2.5 dB connector losses + 2x2 dB in line connectors + 4.5 dB POF losses > 15m): - 22 dBm (SP3) Maximum Pigtail loss 1.5 dB: - 23.5 dBm Minimal Receiver Sensitivity: - 23.5 dBm © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Optical Budget over Full Temperature Range -40C to +95C Rise time: min 1.012ns max: 1.369ns MOST specification: 0.5UI=3.391ns/2=1.6955ns in the worst case (48kHz frame speed) © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved MLX75604AA Transmitter IC SP2 Overshoot Mask 150 Mbps MOST Fall time: min 1.207ns max: 1.635ns MOST specification: 0.5UI=3.391ns/2=1.6955ns in the worst case (48kHz frame speed) © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved MLX75604AA Transmitter IC SP2 Undershoot Mask 150 Mbps MOST Time base: 424ps/div Transmitter eye diagram performed At Vdd=3.3V with MOST worst case pattern © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved MLX75604AA Transmitter IC SP2 Eye Mask 150 Mbps MOST Why Melexis in 150 Mbps MOST? Two types of 150 Mbps Fiber Optic Transceivers Receiver Transmitter 24 pin SOIC Package Availability and Conclusions © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Melexis 150 Mbps Fiber Optic Transceivers for MOST © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Melexis 150 Mb/s Fiber Optic Transceivers © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Clamp attached to SOIC+Lid Anchoring of Clamp Lid “Anchors” at SOIC bottom. Clamp is anchored at SOIC bottom for more robustness when force is applied on the fiber. 24 pin SOIC © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved “Mushrooms” on lid. Clamp is anchored to lid. Pick and Place This allows the device to be handled by the vacuum pick-up head of a standard pick & place SMD machine. © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Flat surface area on top has a length larger than 6 mm. SMD Soldering Process MLX75605 withstands lead free SMD assembly processes according IPC/JEDEC J-STD020 i.e. withstands 245 oC +0 oC/-5 oC during at least 30 sec In order to protect device during soldering process, devices are delivered with a kapton tape on the top. Kapton tape can be easily removed before ferrule insertion. © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved MLX75605 withstands Moisture Sensitivity Level #3. © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Classification of SMD soldering profiles IPC/JEDEC J-STD-020 © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Ferrule insertion into the FOT Mistake-Proofing (Poka-Yoke) When 1 mm SI PMMA POF is used for the pigtail material, a small bending radius of the POF introduces some additional loss in optical power. This additional power loss can be fully overcome by using GOF as pigtail fiber material. © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Melexis 150 Mb/s Fiber Optic Transceivers connected with pigtails Ferrule insertion into the FOT Mistake-Proofing (Poka-Yoke) Rx Ferrule Tx Ferrule Tx Ferrule Rx Ferrule Not OK OK Rx Tx Rx Tx © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Receiver and transmitter ferrules have two times a different diameter so that the receiver ferrule cannot be inserted in the Transmitter coupling hole, and the transmitter ferrule cannot be inserted into the Receiver coupling hole of the Fiber Optic Transceiver Package. Receiver and transmitter ferrules are different. Implemented by having at two different places a different diameter This assures that: • the Receiver Ferrule cannot be inserted in the Transmitter Coupling Hole, and • the Transmitter Ferrule cannot be inserted into the Receiver Coupling Hole of the Fiber Optic Transceiver Package. © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Ferrule insertion into the FOT Mistake-Proofing (Poka-Yoke) Ferrule insertion into the FOT Mistake-Proofing (Poka-Yoke) Correct insertion Rx TX Ferrule Tx © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved RX Ferrule Ferrule insertion into the FOT Mistake-Proofing (Poka-Yoke) Correct insertion Rx TX Ferrule Tx © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved RX Ferrule Ferrule insertion into the FOT Mistake-Proofing (Poka-Yoke) Wrong insertion Rx RX Ferrule Tx © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved TX Ferrule Ferrule insertion into the FOT Mistake-Proofing (Poka-Yoke) Wrong insertion Rx RX Ferrule Tx © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved TX Ferrule Why Melexis in 150 Mbps MOST? Two types of 150 Mbps Fiber Optic Transceivers Receiver Transmitter 24 pin SOIC Package Availability and Conclusions © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Melexis 150 Mbps Fiber Optic Transceivers for MOST Prototypes compliant to 150 Mbps MOST Std rev 1.0: before end of May 2009 End of Qualification before November 2009 PPAP: December 2009 © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Availability (plan) Conclusions Two Insertion components: Two 7 pin Sidelooker packages. A single SMD package: 24 pin SOIC package integrating both receiver and transmitter, as well as the ferrule recptacles. Melexis packaging technology for Fiber Optic Transceivers is able to withstand leadfree SMD processes. © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved 150 Mbps MOST Fiber Optic Transceivers will be available in two package types: Piet De Pauw, Chairman Opto Division, [email protected] Tel +32 57 226147, gsm +32 485 556208 Melexis Contact persons for support in Japan: David Poole, E-mail: [email protected], +81 90 4226 9543 Yuji Ohkawa: E-mail: [email protected], +81 90 1761 0501 © Copyright Melexis Microelectronic Integrated Systems. All Rights Reserved Thank You