MaximMAX14827微型低功耗双路IO链接收发方案.docx
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MaximMAX14827微型低功耗双路IO链接收发方案.docx
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MaximMAX14827微型低功耗双路IO链接收发方案
MaximMAX14827微型低功耗双路IO链接收发方案
Maxim公司的MAX14827是微型封装低功耗双路IO-Link(IO链接)收发器,集成了工业传感器所具有的高压功能包括驱动器和稳压器,工作电压从24V到60V,具有灵活的控制接口,包括SPI和UART接口选择.此外还集成了5V和3.3V线性稳压器以及LED驱动器,主要用在工业传感器,IO-Link传感器和激励器以及安全应用.本文介绍了MAX14827主要特性,框图,典型应用电路以及MAX14827评估板主要特性,电路图,材料清单和PCB设计图.
TheMAX14827integratesthehigh-voltagefunctionscommonlyfoundinindustrialsensors,includingdriversandregulators.TheMAX14827featurestwoultralowpowerdriverswithactivereverse-polarityprotection.Operationisspecifiedfornormal24Vsupplyvoltagesupto60V.TransientprotectionissimplifiedduetohighvoltagetoleranceallowingtheuseofmicroTVS.
Thedevicefeaturesaflexiblecontrolinterface.Pin-controllogicinputsallowforoperationwithswitchingsensorsthatdonotuseamicrocontroller.Forsensorsthatuseamicrocontroller,anSPIinterfaceisavailablewithextensivediagnostics.ForIO-Linkoperation,athree-wireUARTinterfaceisprovided,allowinginterfacingtothemicrocontrollerUART.Finally,amultiplexedUART/SPIoptionallowsusingoneserialmicrocontrollerinterfaceforsharedSPIandUARTinterfaces.
Thedeviceincludeson-board3.3Vand5Vlinearregulatorsforlow-noiseanalog/logicsupplyrails.
TheMAX14827isavailableina(4mm×4mm)24-pinTQFNpackageanda(2.5mm×2.5mm)25-pinwafer-levelpackage(WLP)andisspecifiedovertheextended-40℃to+125℃temperaturerange.
MAX14827主要特性:
HighConfigurabilityandIntegrationReduceSKUs
IO-LinkCompliantTransceiver
Auxiliary24VDigitalOutputandInput
2.3Ω(typ)DriverOn-Resistance
SelectableDriverCurrent:
50mAto250mA
SPIorPin-ControlInterfaceforConfigurationandMonitoring
MultiplexedSPI/UARTInterfaceOption
5Vand3.3VLinearRegulators
OptionalExternalTransistorSupportsHigherRegulatorLoadCapability
IntegratedLEDDriver
IntegratedProtectionEnablesRobustCommunication
65VAbsoluteMaximumRatingsonInterfaceandSupplyPinsAllowsforFlexibleTVSProtection
9Vto60VSpecifiedOperation
GlitchFiltersforImprovedBurstResilienceandNoise
SelectableOver-CurrentAuto-RetryTiming
ThermalShutdownAuto-RetryCycling
Hot-PlugSupplyProtectionupto36V
ReversePolarityProtectionofAllSensorInterfaceInputs/Outputs
-40℃to+125℃OperatingTemperatureRange
MAX14827应用:
IndustrialSensors
IO-LinkSensorsandActuators
SafetyApplications
图1.MAX14827框图
图2.MAX14827典型应用电路
图3.MAX14827典型应用电路:
采用降压的5V稳压器
图4.MAX14827复接SPI/UART模式配置电路
MAX14827评估板
TheMAX14827evaluationkit(EVkit)consistsofaMAX14827evaluationboardisafullyassembledandtestedcircuitboardthatevaluatestheMAX14827IO-Link®devicetransceiver.
TheEVkitisdesignedtooperateasastand-aloneboardorwithanmbedboardforeasysoftwareevaluation.
图5.MAX14827评估板外形图
MAX14827评估板主要特性:
●●IO-Link-CompliantDeviceTransceiver
●●IOandSPI™InterfaceTerminals
●●ProvenPCBLayout
●●FullyAssembledandTested
图6.MAX14827评估板电路图
MAX14827评估板材料清单:
图7.MAX14827评估板PCB设计图
(1)
图8.MAX14827评估板PCB设计图
(2)
图9.MAX14827评估板PCB设计图(3)
图10.MAX14827评估板PCB设计图(4)
图11.MAX14827评估板PCB设计图(5)
图12.MAX14827评估板PCB设计图(6)
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