Silabs Si5386 12路任意频率无线抖动衰减时钟发生器解决方案
The Si5386 is a high performance, integer and fractional clock generator for wireless applications which demand the highest level of integration and phase noise performance. Based on Silicon Laboratories ’4th generation DSPLL technology, the Si5386combines frequency synthesis and jitter attenuation in a highly integrated digital solutionthat eliminates the need for external VCXO and loop filter components. A fixedfrequency crystal that provides frequency stability for free-run and holdover modes isintegrated within the package saving valuable PCB space. This all-digital solutionprovides superior performance that is highly immune to external board disturbancessuch as power supply noise.
Modern C-RAN remote radio heads and fixed wireless systems require a diverse setof clocks such as ADC/DAC, RF LOs, eCPRI/CPRI, and Ethernet clocks. TheSi5386 architecture is designed to deliver high-performance JESD204B DCLK andSYSREF clock pairs and flexible any-rate clocks for non-LTE clocks such as Ethernetand system reference clocks all from a single IC.
The Si5386 ’s internal DSPLL provides jitter attenuation and any-frequency multiplication of the selected input frequency without theneed for external VCXOs or loop filters. Input switching is controlled manually or automatically using an internal state machine. The oscillator circuit (OSC) provides a frequency reference which determines output frequency stability and accuracy while the device is infree-run or holdover mode using the integrated crystal provided inside the Si5386 package. The integrated crystal is not only convenient,but saves valuable PCB area. The high-performance MultiSynthdividers (N) generate integer or fractionally related output frequenciesfor the output stage. A crosspoint switch connects any of the MultiSynth generated frequencies to any of the outputs. Additional integer division (R) determines the final output frequency. Further, the DSPLL is specially calibrated for ultra-low phase noise whenconfigured for LTE frequencies with JESD204B outputs. This integration provides a clock-tree-on-a-chip solution for applications thatneed a mix of 4G/LTE and general-purpose frequencies.
Si5386 Rev. E主要特性:
• Flexible timing in a single IC
• Generates any combination of output frequencies from anyinput frequency
• Input frequency range:
• Differential: 7.68 MHz to 750 MHz
• LVCMOS: 7.68 MHz to 250 MHz
• Output frequency range (Integer):
• Differential: up to 2.94912 GHz with JESD204B support
• Output frequency range (fractional):
• Differential: up to 735 MHz
• LVCMOS: up to 250 MHz
• Ultra-low jitter: 80 fs typ(12 kHz–20 MHz)
• Programmable jitter attenuation bandwidth from 1 Hz to 4 kHz
• Highly configurable outputs compatible with LVDS, LVPECL,LVCMOS, CML, and HCSL with programmable signal amplitudefrom 200 - 3200 mV
• Status monitoring (LOS, OOF, LOL)
• Pin controlled input switching
• DSPLL with special wireless calibration
• Optional zero delay mode
• Hitless input clock switching: automatic or manual
• Automatic free-run and holdover modes
• Fastlock feature
• Glitchless on the fly output frequency changes
• Core voltage:
• VDD: 1.8 V ±5%
• VDDA: 3.3 V ±5%
• Independent output clock supply pins: 3.3 V, 2.5 V, or 1.8 V
• Output-output skew: 20 pstyp
• Serial interface: I2C or SPI
• In-circuit programmable with non-volatile OTP memory
• ClockBuilderProTM software simplifies device configuration
• Temperature range: –40 to +85 ℃
Si5386主要特性:
• Flexible timing in a single IC
• Generates any combination of outputfrequencies from any input frequency
• Input frequency range:
• Differential: 7.68 MHz to 750 MHz
• LVCMOS: 7.68 MHz to 250 MHz
• Output frequency range (Integer):
• Differential: up to 3 GHz
• Output frequency range (fractional):
• Differential: up to 735 MHz
• LVCMOS: up to 250 MHz
• Ultra-low jitter:
• 80 fs typ(12 kHz–20 MHz)
Si5386应用:
• Cloud Radio Access Network RRHs
• Small cells
• Fixed wireless
• Wireless base stations
• Active antenna systems
• Distributed antenna systems
图1.Si5386框图
图2.Si5386应用框图
评估板Si5386E-E-EB
The Si5386E-E-EB is used for evaluating the Ultra Low Jitter, Any-Frequency, 12-output JESD204B Clock Generator. The Si5386employs fourth-generation DSPLL technology to enable clock generationfor LTE/ JESD204B applications which require the highestlevel of jitter performance. The Si5386E-E-EB has four independentinput clocks and a total of 12 outputs. The Si5386E-E-EB canbe easily controlled and configured using Silicon Labs ’ ClockBuilder Pro™ (CBPro™) software tool.
评估板Si5386E-E-EB主要特性:
• Powered from USB port or external powersupply
• Internal 48.0231 MHz crystal providesholdover mode of operation on the Si5386
• CBPro™ GUI programmable VDDOsupplies allow each of the ten primaryoutputs to have its own supply voltageselectable from 3.3, 2.5, or 1.8 V
• CBPro™ GUI-controlled voltage, current,and power measurements of VDD, VDDA,and all VDDO supplies
• Status LEDs for power supplies andcontrol/status signals of Si5386
• SMA connectors for input clocks, outputclocks and optional external timingreference clock
图3.评估板Si5386E-E-EB外形图
图4.评估板Si5386E-E-EB框图
图5.评估板Si5386E-E-EB电路图(1)
图6.评估板Si5386E-E-EB电路图(2)
图7.评估板Si5386E-E-EB电路图(3)
图8.评估板Si5386E-E-EB电路图(4)
图9.评估板Si5386E-E-EB电路图(5)
图10.评估板Si5386E-E-EB电路图(6)
图11.评估板Si5386E-E-EB电路图(7)
图12.评估板Si5386E-E-EB电路图(8)
图13.评估板Si5386E-E-EB电路图(9)
图14.评估板Si5386E-E-EB电路图(10)
图15.评估板Si5386E-E-EB电路图(11)
图16.评估板Si5386E-E-EB电路图(12)
图17.评估板Si5386E-E-EB电路图(13)
图18.评估板Si5386E-E-EB电路图(14)
图19.评估板Si5386E-E-EB电路图(15)
图20.评估板Si5386E-E-EB电路图(16)
图21.评估板Si5386E-E-EB电路图(17)
图22.评估板Si5386E-E-EB电路图(18)
图23.评估板Si5386E-E-EB电路图(19)
图24.评估板Si5386E-E-EB电路图(20)
图25.评估板Si5386E-E-EB电路图(21)
图26.评估板Si5386E-E-EB电路图(22)
图27.评估板Si5386E-E-EB电路图(23)
图28.评估板Si5386E-E-EB电路图(24)
图29.评估板Si5386E-E-EB电路图(25)
图30.评估板Si5386E-E-EB电路图(26)
图31.评估板Si5386E-E-EB电路图(27)
图32.评估板Si5386E-E-EB电路图(28)
图33.评估板Si5386E-E-EB电路图(29)
图34.评估板Si5386E-E-EB电路图(30)
图35.评估板Si5386E-E-EB电路图(31)
图36.评估板Si5386E-E-EB电路图(32)
图37.评估板Si5386E-E-EB电路图(33)
图38.评估板Si5386E-E-EB电路图(34)
图39.评估板Si5386E-E-EB电路图(35)
图40.评估板Si5386E-E-EB电路图(36)
图41.评估板Si5386E-E-EB电路图(37)
图42.评估板Si5386E-E-EB电路图(38)
图43.评估板Si5386E-E-EB电路图(39)
图44.评估板Si5386E-E-EB电路图(40)
图45.评估板Si5386E-E-EB电路图(41)
图46.评估板Si5386E-E-EB电路图(42)
评估板Si5386E-E-EB材料清单:
图47.评估板Si5386E-E-EB PCB设计图(1)
图48.评估板Si5386E-E-EB PCB设计图(2)
图49.评估板Si5386E-E-EB PCB设计图(3)
图50.评估板Si5386E-E-EB PCB设计图(4)
图51.评估板Si5386E-E-EB PCB设计图(5)
图52.评估板Si5386E-E-EB PCB设计图(6)
图53.评估板Si5386E-E-EB PCB设计图(7)
图54.评估板Si5386E-E-EB PCB设计图(8)
图55.评估板Si5386E-E-EB PCB设计图(9)
图56.评估板Si5386E-E-EB PCB设计图(10)
图57.评估板Si5386E-E-EB PCB设计图(11)
图58.评估板Si5386E-E-EB PCB设计图(12)
图59.评估板Si5386E-E-EB PCB设计图(13)
图60.评估板Si5386E-E-EB PCB设计图(14)
图61.评估板Si5386E-E-EB PCB设计图(15)
图62.评估板Si5386E-E-EB PCB设计图(16)
图63.评估板Si5386E-E-EB PCB设计图(17)
图64.评估板Si5386E-E-EB PCB设计图(18)
图65.评估板Si5386E-E-EB PCB设计图(19)
图66.评估板Si5386E-E-EB PCB设计图(20)
迈阿密电子是一家知名的电子零组件代理分销商,是多家国际著名半导体厂商的现货供应商。 迈阿密电子始终坚守“诚信为上”的商道思想,倡导人性化的企业管理理念,讲求“团结进取”的团队成长观,对上游供应商及下游客户信守承诺。求实创新,充分规划企业资源,培养精英团队,提供更具效能、更为专业的职业学习和应变能力。满足客户差异化需求的同时,降低客户生产成本,提供最满意的客户服务。成就迈阿密最具价值的卓越未来。 代理分销元器件主要应用范围:工业控制、计算与存储、有线及无线通讯产品、光电产品以及消费性电子产品、仪器仪表、音响设备、通讯、医疗设施、安防产品、UPS电源、测量仪器等。
详情请见:
责任编辑:Davia
【免责声明】
1、本文内容、数据、图表等来源于网络引用或其他公开资料,版权归属原作者、原发表出处。若版权所有方对本文的引用持有异议,请联系拍明芯城(marketing@iczoom.com),本方将及时处理。
2、本文的引用仅供读者交流学习使用,不涉及商业目的。
3、本文内容仅代表作者观点,拍明芯城不对内容的准确性、可靠性或完整性提供明示或暗示的保证。读者阅读本文后做出的决定或行为,是基于自主意愿和独立判断做出的,请读者明确相关结果。
4、如需转载本方拥有版权的文章,请联系拍明芯城(marketing@iczoom.com)注明“转载原因”。未经允许私自转载拍明芯城将保留追究其法律责任的权利。
拍明芯城拥有对此声明的最终解释权。