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(Click for frequent words.) 62 integrated circuits 61 programmable logic devices 61 chip SoC designs 60 SoCs 60 ICs 59 programmable logic devices PLDs 59 chip SoCs 59 SiPs 58 semiconductors 58 SoC 57 signal processors DSPs 57 chip SoC 57 IP cores 57 SoC designs 57 chip SoC solutions 57 RF ICs 57 signal integrated circuits 57 RFCMOS 56 RF integrated circuits 56 chip SOC 56 integrated circuits IC 56 SRAMs 56 integrated circuits ASICs 56 Indium Phosphide InP 56 signal ICs 56 ASICs 56 CPLDs 56 SoCs ASICs 55 analog circuits 55 analog integrated circuits 55 PHYs 55 arrays FPGA 55 RF baseband 55 NXP LPC# 55 microcontroller MCU 55 TMS#C# digital 55 Lattice FPGA 55 CMOS silicon 55 operational amplifiers 55 ferroelectric random access 55 DSPs FPGAs 55 programmable logic solutions 54 analog ICs 54 FPGA architectures 54 embedded NVM 54 RF CMOS 54 baseband LSI 54 microelectronic devices 54 fiber optic transceivers 54 MMICs 54 fabless manufacturer 54 multimedia SoCs 54 transceiver modules 54 arrays FPGAs 54 optical transceivers 54 SERDES 54 AEC Q# qualified 53 customizable dataplane processor 53 FPGAs ASICs 53 TMS#C# DSP 53 embedded processor cores 53 PHY IP 53 ProASIC Plus 53 GX FPGA 53 Flex OneNAND 53 dsPIC#F 53 LatticeSC 53 C#x DSPs [002] 53 RF transceiver 53 emPROM 53 datacom telecom 53 HardCopy II 53 dynamically reconfigurable 53 TMS#C#x + 53 Xilinx FPGAs 53 LPDDR2 53 extendible cores assist 53 ORNAND 53 TMS#DM# [002] 53 bipolar transistors 53 Stretch S# 53 Quantenna Communications Inc. 53 i.MX# processors 53 Altera FPGAs 52 Tensilica processors 52 NASDAQ ISIL 52 ZMD# 52 processor DSP 52 MB#R# 52 audio CODEC 52 CMOS ICs 52 NOR Flash memory 52 SigmaQuad 52 IGBT Insulated Gate 52 Blackfin processors 52 #bit MCU 52 analog semiconductors 52 microprocessor cores 52 FPGAs 52 analog circuitry 52 MachXO 52 ADCs DACs 52 Programmable logic 52 nonvolatile static random 52 Serdes 52 programmable logic 52 PMICs 52 TI MSP# ultra 52 PCI Express PCIe 52 SOC designs 52 LDMOS RF power 52 module VRM 52 SiT# 52 CPUs DSPs 52 chips SoCs 52 SoC Encounter 52 configurable processors 52 CX#X 52 baseband processors 52 fabless semiconductor 52 nanometer nm 52 demodulators 52 Arrays FPGAs 52 deep submicron 52 nonvolatile memories 52 Xilinx Virtex 5 52 controlled oscillator VCO 52 silicon chips 52 CMOS processes 52 Methodology Kit 52 dsPIC#F# 52 ASIC FPGA 52 TMS#DM# [001] 52 BiFET 52 monolithic CMOS 52 PIN diodes 52 multicore DSPs 52 amplifier ICs 52 BF#x 52 package SiP 52 CoolRunner II 52 photonic components 52 transceiver IC 52 Structured ASICs 52 microcontrollers 52 ATmega#P [001] 52 CY#C#x# 52 embedded microprocessors 51 DSP cores 51 embedded microcontroller 51 discrete semiconductors 51 HEMT 51 microcontrollers capacitive touch 51 MB#K# 51 MIPS# ® 51 Programmable Logic Devices 51 Analog FastSPICE 51 FPGA DSP 51 Cortex M3 microcontroller 51 ARM9 core 51 customizable dataplane processors 51 ColdFire MCUs 51 radio frequency RF 51 optical transceiver modules 51 Altera Stratix III 51 Intellon HomePlug AV 51 Micrel Semiconductor 51 ASICs FPGAs 51 ARM#JZF S 51 TDA# [001] 51 silicon germanium SiGe BiCMOS 51 semiconductor 51 AT#C# [002] 51 serial interfaces 51 tapeouts 51 custom ASICs 51 audio amplifiers 51 signal controllers DSCs 51 TAS# [001] 51 NAND NOR 51 memory compilers 51 IP Cores 51 vertical cavity 51 serial EEPROMs 51 Synplify Pro software 51 RF modules 51 TM ASIP TM 51 quadrature modulators 51 silicon oscillator 51 subsystems 51 Nios II processor 51 Pseudo SRAM 51 CMOS IC 51 algorithmic synthesis tools 51 SerDes 51 #bit RISC 51 RLDRAM II 51 SafeXcel 51 Nasdaq GS RFMD 51 microprocessors microcontrollers 51 circuit MMIC 51 baseband processing 51 optical modulators 51 Stratix III FPGAs 51 C#x + 51 glueless interface 51 monolithic microwave integrated circuits 51 PLDs 51 Stratix II FPGAs 51 DDR PHY 51 Sequence PowerTheater 51 LSIs 51 TI C# 51 Evaluation Module 51 FPGA CPLD 51 monolithically integrated 51 ARM#EJ S 51 About Xilinx Xilinx 51 LDMOS devices 51 nm FPGA 51 ML#Q# 51 MOSFET drivers 51 multichip 51 GreenChip TEA# 51 Mixed Signal 51 performance analog ICs 51 Nasdaq VLTR 51 nm CMOS process 51 Integrated Circuits ICs 51 PNX# 51 QorIQ processors 51 MirrorBit ORNAND 51 Stratix II GX 51 PHY layer 51 tunable filters 51 programmable gate 51 QFN packages 51 opto electronic 50 RF transceivers 50 CMOS wafer 50 #nm FPGAs 50 QT# [002] 50 photodiode arrays 50 ASSPs 50 microcontrollers MCUs 50 Agilent U#A 50 Micro Devices 50 telecom datacom 50 #bit MCUs 50 Digital Signal Processor 50 International Rectifier NYSE IRF 50 crystal oscillators 50 coprocessors 50 InGaP HBT 50 Oscilloscopes 50 #.# micron CMOS 50 Silicon Germanium 50 GDSII flow 50 SDRAMs 50 CMOS RF 50 PowerQUICC processors 50 Flash microcontroller 50 GaN HEMT 50 nanometer nm CMOS 50 RF circuitry 50 RFICs 50 Reference Design 50 SuperH 50 Denali Databahn 50 Entropic EN# 50 GaAs GaN 50 RF LDMOS 50 8bit MCUs 50 VCXO 50 tuner IC 50 silicon germanium SiGe 50 optoelectronic components 50 NASDAQ SIGM 50 ARM microcontroller 50 Gigabit Ethernet adapters 50 #x#mm QFN 50 ASIC prototyping 50 silicon tuners 50 magnetoresistive random access 50 field programmable gate 50 Cell MLC 50 re programmable nonvolatile 50 Encounter RTL Compiler 50 LDMOS transistors 50 LPDDR 50 PCIe interconnect 50 CMOS logic 50 cellular basestations 50 optocouplers 50 TMS# 50 Altera Stratix 50 MIPS# #KE 50 RTL Compiler 50 RF subsystem 50 CompactPCI ® 50 MPC#E 50 microelectronic components 50 tuner ICs 50 TMS#TCI# 50 signal semiconductors 50 diplexers 50 Stratix II 50 MSC#x 50 opto electronic components 50 kit PDK 50 GHz chipsets 50 XDR DRAM 50 Arria GX 50 Kilopass XPM 50 audio codecs 50 RISC DSP 50 photonic integrated circuits 50 tunable DWDM 50 DesignWare Verification IP 50 transistor HEMT 50 baseband ICs 50 indium gallium phosphide InGaP 50 ARM# core [001] 50 Digital Signal Processors 50 crosspoint switches 50 serial transceivers 50 #K#R 50 ASIC SoC 50 TJA# 50 #.#um CMOS 50 MIPS# #K 50 ARM#EJ S TM 50 Blackfin processor 50 programmable DSP 50 GaAs pHEMT 50 Solarflare Communications 50 CEVA TeakLite III 50 Analog Mixed Signal 50 SOCs 50 digital converters ADCs 50 GbE controller 50 I2C interfaces 50 RF IC 50 TMS#C# ™ 50 MIPS# R 50 GaN transistors 50 ATmega#RFA# 50 baseband DSP 50 bit microcontrollers MCUs 50 baseband MAC 49 Silicon TFPS 49 IDT P# 49 Altera Stratix II 49 FPGA 49 MirrorBit NOR 49 discretes 49 AEL# 49 DSP FPGA 49 MAX# MAX# [002] 49 datapaths 49 MPC# [003] 49 bit microcontroller MCU 49 LTE UE 49 #nm node [002] 49 Virtex 5 49 fully synthesizable 49 CAN transceivers 49 MoSys 1T SRAM 49 noise amplifiers LNAs 49 Spartan 3A 49 Agilent MXA 49 QDRII 49 Gallium Nitride GaN 49 Kawasaki Microelectronics 49 CPU DSP 49 nm DRAM 49 Analog FastSPICE Platform 49 Mach Zehnder modulator 49 SFP + modules 49 configurable CPU 49 Sequans SQN# 49 ARM LSE 49 Mbit SRAMs 49 FPGA ASIC 49 optical interconnect 49 #.#μm CMOS 49 C#x DSP 49 silicon 49 pHEMT 49 NASDAQ TSEM TASE TSEM 49 CMOS oscillator 49 MirrorBit R 49 International LSE ARK 49 iCoupler 49 StarCore DSP 49 LatticeEC 49 Reference Methodology 49 Peregrine Semiconductor Corporation 49 Freescale QorIQ 49 epi wafers 49 parasitic extraction 49 DSP# [001] 49 Digital Signal Controllers 49 #nm SoC 49 Gallium Arsenide GaAs 49 transparent conductive coatings 49 ARM7TDMI processor 49 nanoWatt Technology 49 LSI TrueStore 49 MIPS# processor 49 OMAP#x processors 49 TM Nasdaq AATI 49 MCUs 49 electro optic components 49 capacitive touch controller 49 PXI Express 49 circuit IC 49 silicon tuner 49 Compact PCI 49 FPOAs 49 laser diode drivers 49 SAW filters 49 OneDRAM 49 #Gb NAND flash 49 ARM7 49 microwave RF 49 millimeter wave mmWave 49 metering ICs 49 Nasdaq QUIK 49 photonic devices 49 Verification IP 49 NYSE FSL.B 49 OTDRs 49 PowerPro MG 49 manufactures integrated circuits 49 Platform ASICs 49 Altera Cyclone III 49 LDMOS 49 ZigBee modules 49 ASIC ASSP 49 NVIDIA nForce Professional 49 powerline ICs 49 Axcelerator 49 chipsets 49 RF Microwave 49 GiDEL 49 VCSELs 49 CPLD 49 CODECs 49 LatticeECP2 49 Cortex M0 processor 49 LatticeECP 49 OMAP#x devices 49 RFX# 49 CE ATA 49 Spansion Flash 49 CMOS transistors 49 XScale processors 49 TI TMS#DM#x 49 Xilinx FPGA 49 Stratix II FPGA 49 #bit ADC 49 Array FPGA 49 baseband analog 49 Tundra Tsi# 49 DDR3 memory modules 49 flex rigid 49 LSI Logic Corporation 49 Digital Converter ADC 49 #G DQPSK 49 #nm SRAM 49 ARM Cortex processor 49 Indium Phosphide 49 Nasdaq TXCC designs 49 EEPROMs 49 baseband chipset 49 Flash microcontrollers 49 BiCMOS 49 MoSys Bandwidth Engine 49 CMOS fabrication 49 AVR MCU 49 interconnect semiconductors 49 NASDAQ LDIS 49 coupled inductor 49 ARM7TDMI S 49 MPS Nasdaq MPWR 49 codenamed Silverthorne 49 XAUI 49 g accelerometers 49 Embedded NVM MEMS 49 Marvell #DE# 49 LatticeXP 49 Renesas Electronics RX 49 microwave integrated circuits 49 Si#x 49 MCF#x [002] 49 multichip package 48 Virtuoso Accelerated Parallel Simulator 48 FineSim Pro 48 monolithic microwave integrated 48 MOSFETs IGBTs 48 silicon oscillators 48 uPD# [001] 48 Geode LX 48 voltage MOSFET 48 ROCm 48 Stratix IV GX FPGA 48 SoC designers 48 Cortex processor 48 memory BIST 48 Gallium arsenide 48 multimedia SoC 48 electro optic plastics 48 varactors 48 RTAX DSP 48 FPGA synthesis tools 48 ARM#EJ processor 48 Mindspeed Transcede 48 Nand Flash 48 Virtium Technology 48 Corporation Nasdaq RMTR 48 #nm Nextreme 48 C#x + DSP 48 reconfigurable FPGA 48 microwaves lamps 48 TI TMS#C# 48 stereo codec 48 hardware accelerators 48 #D/#D graphics 48 PIC#F 48 Powerful debug 48 baseband processor 48 MSC# [001] 48 oscillators filters 48 ARM#E 48 transmitters receivers 48 ColdFire V1 48 Fusiv Vx# 48 ADXL# 48 MEMS gyroscope 48 debug characterization 48 PRNewswire FirstCall Exar 48 FPGA prototypes 48 HardCopy 48 UltraCMOS TM 48 fabless IC 48 LPDDR2 memory 48 QUICC Engine technology 48 BRF# 48 WLANPlus 48 pseudo SRAM 48 DSP algorithm 48 digital isolators 48 iCE# 48 Cortex A8 processor 48 NASDAQ TQNT 48 HCS# 48 PHY MAC 48 Follow Vishay 48 STB# [002] 48 CHiL Semiconductor Corporation 48 CX# [001] 48 graphics accelerators 48 MC#x 48 RF amplifier 48 Cadence Encounter RTL Compiler 48 nm CMOS 48 DDR2 DRAM 48 brightness light emitting 48 Freescale ColdFire 48 Myri #G 48 AdvancedTCA AdvancedMC 48 DongbuAnam 48 RTL synthesis 48 ADC DAC 48 Through Silicon Vias 48 DDR NAND 48 Flash Programmer 48 nano optic 48 ETMemory 48 CMOS RF transceiver 48 SRAM DRAM 48 CN#XX 48 Schottky diodes 48 Marvell PXA3xx 48 FPGA prototyping 48 Mobile MicroTuner 48 Switch Mode 48 moviNAND 48 ProASIC3 48 PowerQUICC III 48 serdes 48 Virage Logic SiWare 48 r NYSE IRF 48 DSP processor cores 48 device manufacturers IDMs 48 CMOS photonics 48 Synopsys Galaxy 48 Arria GX FPGAs 48 LVDS interfaces 48 ARM# MPCore processor 48 Freescale MSC# 48 NASDAQ QUIK 48 RF Microwave components 48 embedded SRAM 48 Tensilica Xtensa 48 nanometer CMOS 48 Fusiv 48 #V LDMOS 48 NASDAQ MTLK 48 embedded DRAM eDRAM 48 optoelectronic packaging 48 voltage CMOS 48 Application Specific Integrated 48 DAN# 48 transceivers 48 CS#L# 48 Synopsys DesignWare IP 48 embedded nonvolatile memory 48 ARM# ™ 48 Structured ASIC 48 density interconnect HDI 48 EZ Color 48 TSX GND 48 MEMS sensor 48 TI C#x 48 Am# 48 Debug Solution 48 mask ROM 48 DesignWare USB 48 Bit MCU 48 asynchronous SRAM 48 Edge QAM 48 k gate dielectric 48 analog baseband 48 SlimChip TM 48 frequency dividers 48 DA# [003] 48 Insulator SOI 48 TigerSHARC 48 EDA tools 48 SiI# 48 ARM9 TM 48 fabless analog 48 NASDAQ SUPX 48 JESD# [002] 48 Atmel Introduces 48 LatticeECP2M 48 Single Chip 48 5V CMOS 48 powerline modem 48 demodulator 48 dc dc conversion 48 #nm silicon 48 TGA# SM 48 Application Specific Integrated Circuits 48 Inc. NASDAQ SLAB 48 Ferroelectric Random Access 48 nm SRAM 48 channel emulators 48 PHY transceiver 48 NASDAQ IKAN leading 48 transceiver module 48 MEMS oscillator 48 capacitive touch sensing 48 HomePlug powerline 48 SC# processor 48 ARM Cortex M3 48 CMOS 48 chip SoC designers 48 CS# [002] 48 MxL#RF 48 PIC#H 48 #.#μm CMOS process 48 heterogeneous multicore 48 QorIQ 48 MDTV receiver 48 pin TQFP packages 48 iMOTION 48 serializer deserializer 48 PXIT 48 AXI TM 48 PSRAM 48 PowerQUICC 48 XtremeDSP 48 ARM# TM 48 SAW oscillators 48 ARM# processor [001] 48 picoArray 48 ARM#JF S 48 baseband modems 48 GaN HEMTs 48 Deep Reactive Ion Etch 48 VideoCore 48 baseband modem 48 ChipX 48 Atmel picoPower 48 eSi 48 RFIC 48 NYSE STM 48 STT RAM 48 controller ICs 48 quartz plates 48 Mbit densities 48 physical layer PHY 48 MAXQ# 48 Freescale MPC# 48 ZigBee IEEE #.#.# 48 C#x [001] 48 bit RISC processor 47 amplifier PA 47 InGaP 47 protocol stacks 47 PRNewswire FirstCall STMicroelectronics 47 serializer deserializer SerDes 47 Philips Nexperia 47 SiP 47 Physical Layer 47 STT #G 47 markets EEPROM SmartCards 47 Photomasks 47 NI DAQmx driver 47 uPD# [002] 47 Xilinx Spartan 3A 47 Business Wire Cypress Semiconductor 47 DesignWare IP 47 SPICE simulator 47 silicon integrated circuits 47 insulator SOI technology 47 intellectual property SIP 47 Technologies Incorporated AnalogicTech 47 SiW# 47 FD SOI 47 pseudomorphic 47 Spartan 3E 47 processor architectures 47 IEEE #.#.# compliant 47 CryptoMemory 47 nitride semiconductor 47 SuperFlash 47 serial interconnects 47 ARM7TDMI core 47 Actel FPGA 47 Altera Quartus II 47 triplexer 47 PolarPro 47 TMS#C# DSPs 47 Simtek Corporation 47 TriQuint Semiconductor Nasdaq TQNT 47 CMOS transceiver 47 SLC NAND flash 47 ARM Cortex A9 processor 47 integrated subassemblies 47 MicroBlaze processor 47 AT#SAM# [001] 47 Stratix IV FPGA 47 structured ASICs 47 Corporation NASDAQ PSEM 47 Inc. NASDAQ MOSY 47 TMS#C#x 47 Nasdaq IKAN 47 Atmel AVR# 47 Analog ICs 47 multicore DSP 47 voltage differential 47 SH# [002] 47 PRNewswire FirstCall Synopsys 47 PRNewswire FirstCall Trident Microsystems 47 Demodulator 47 Softransceiver 47 AWL# 47 RF vector 47 EDXRF 47 core MIPS# processors 47 optical subassemblies 47 microporous membranes 47 M4K core 47 #bit ADCs 47 HVIC 47 capacitive touch sensor 47 Inc. Nasdaq SLAB 47 analog converters DACs 47 microelectronic 47 nvSRAM 47 Inc. Nasdaq ATHR 47 micromachined 47 Field Programmable Gate 47 optical transceiver 47 TMS#DM#x 47 Structured eASIC 47 Integrated Circuits 47 STR#F 47 C#F# [001] 47 CMOS circuitry 47 Silego Technology 47 Nasdaq IDTI 47 STM#L 47 synthesizable 47 Nasdaq LTXX leading 47 HardCopy ASIC 47 Gigabit Ethernet #GbE [001] 47 TZero Technologies 47 FineSim SPICE 47 NASDAQ CTLM 47 directly modulated lasers 47 Virtuoso Multi 47 eSi RISC 47 baseband IC 47 synthesizable IP 47 modulation formats 47 NASDAQ ENTR 47 automotive MCUs 47 dsPIC ® 47 IAR KickStart Kit 47 HCD# [001] 47 RF microwave 47 FPGA implementations 47 MEMS Sensor 47 Sigma Designs NASDAQ SIGM 47 CoolMOS 47 Databahn TM 47 MB#C# [001] 47 OCTEON CN#XX 47 programmable SoC 47 V# platform 47 MPC#e processor 47 #.#μm [002] 47 Complementary Metal Oxide Semiconductor 47 H8S 47 Stratix III FPGA 47 M3 processor 47 TVS diodes 47 OFDM orthogonal frequency 47 linear integrated circuits 47 picoChip PC# [001] 47 serial backplane 47 MPR# [001] 47 Cortex M0 47 picoXcell 47 photomasks 47 micro optics 47 CyberDisplay #K 47 Databahn 47 Memory Controllers 47 unit VPU 47 voltage MOSFETs 47 baseband RF 47 Mixed Signal IC 47 Stratix ® 47 #nm FPGA 47 FlexRay TM 47 GX FPGAs 47 datapath 47 PRNewswire FirstCall Pericom Semiconductor 47 unclonable 47 semiconductor CMOS 47 BCM# reference 47 photodetectors 47 Mach Zehnder modulators 47 LeCroy Corporation 47 MediaTek MT# 47 TRF# [002] 47 E pHEMT 47 APS3 47 NI TestStand 47 transimpedance amplifiers 47 AMBA AXI 47 SiliconBlue 47 #nm CMOS [001] 47 Limited RFEL 47 OCDemon 47 LIN#.# 47 VLSI circuits 47 iMEMS 47 AWB# 47 MAX# MAX# [001] 47 #.#.#/ZigBee 47 Corporation Nasdaq VIMC 47 Li ion battery charger 47 SoC ASIC 47 SiGe C 47 Sandbridge Technologies 47 Gbit DDR3 47 amplifier modules 47 DRAM memory 47 SAS expanders 47 precision op amps 47 MCP#X 47 RFR# 47 TMS#C#x + DSP 47 LatticeECP2 M 47 serial EEPROM devices 47 fiber optic subsystems 47 serial RapidIO 47 AVR microcontroller 47 LatticeECP3 ™ 47 DAC# 47 OCTEON II processor 47 Zarlink ZL# 47 Flash MCUs 47 Eltek technologically advanced 47 Nasdaq EXAR 47 CryptoRF 47 metrology defect 47 Nasdaq RFMD 47 microcontroller 47 ARM#JZF S processor 47 Freescale i.MX 47 CMOS oscillators 47 TxDAC 47 mixed signal nonvolatile 47 MCF#x [001] 47 #Gbit [001] 47 #nm RF CMOS 47 PHY 47 PLLs 47 ARM9 ™ 47 ARM AMBA 47 dc dc converters 47 Zenverge 47 DaVinci TM 47 fpgas 47 AD#x 47 sampling oscilloscopes 47 Stellaris MCUs 47 CdTe Si 47 Stratix IV E 47 Serial Flash 47 MT# [003] 47 GaAs HBT 47 MPEG decoder 47 ARM#T 47 Radio Frequency Integrated Circuits 47 GDM# 47 ARM# processors 47 ASMedia 47 analog semiconductor 47 Nasdaq NVLS 47 TVS Diodes 47 MEMS nanotechnology 47 OmniBSI TM 47 STn# 47 8Gb NAND 47 nm FPGAs 47 photonic integrated circuits PICs 47 #/#-bit embedded RISC microprocessor 47 MIPS processor 47 through silicon vias 47 Ltd. Nasdaq TSEM 47 ZigBee protocol 47 wafer foundries outsource 47 BlueCore5 Multimedia 47 TDA# [002] 47 SGI NASDAQ SGIC 47 ADCs analog 47 wireless basestations 47 Wintegra WinPath 47 ZG#M 47 RadiSys ® 47 interposers 47 HEMTs 47 linear amplifiers 47 AVR microcontrollers 47 XCode TM 47 AVR# UC3 47 TSMC #nm [001] 47 basestation 47 TMS#C# 47 8bit MCU 47 B4 Flash 47 TNETW# 47 basestations 47 LTX Corporation 47 LMX# 47 analogue ICs 47 Altera Cyclone 47 MCP# AFE 47 Qorivva 47 Gb DDR3 47 CellMath 47 photonic integrated circuit 47 MPC# processor 46 Nasdaq NETL 46 RTU# 46 NeoMobileTV 46 memory FRAM 46 Mbit nvSRAM 46 NYSE MXL 46 cellular handsets 46 ATtiny# 46 RF tuner 46 #DE# 46 RISC cores 46 embedded semiconductors 46 1Gbit DDR2 46 hi rel 46 #GBASE T PHY 46 High Brightness LEDs 46 Silicon Germanium SiGe