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特性
产品
描述
usb 或者 ps/2
电源
I2C控制
12 mhz
结晶
PCB循环
触角
MSP430
TPS71533
2数据 途径
6mhz 为 向上
TRF7900A
TRF7900A
SWRS031–OCTOBER2005
fullyintegratedanalogfront-enddualreceiverbaseunitfor27-mhzwirelessmouse
andKeyboardSystems
•
HighDataThroughputRate
•
23discretecomponentsintgratedintoone–5-khzsquarewavesimultaneouslyper
ChipChannel
–OnlyExternalComponentsareBypassand–10kbpsMillerEncodedData
filtercapacitors,andonecrystal
•
I
2
CControlInterface
•
rftuner,mixer,晶体管,passives,coils,
•
ReceivedSignalStrengthIndicator
andCeramicFilterFunctionalityAllonOne
•
5-vsupply
碎片
•
availablein28-pintssop(pw)pacakge
•
IntegratedPhaseLockedLoop
•
8user-selectablefrequencies
–eachchannel(mouseandkeyboard)能
•
27-mhzwirelessmouseandkeyboard
IndependentlySelectAnyoftheAvailable
系统
发生率
•
HumanInterfaceDevices
•
internallygenerated6-mhzclocktodrive
•
WirelessControl
USBMicrocontroller
•
RemoteControlToys
•
WirelessHeadset
•
Remoteinstrumentation
thetrf7900aisadualintegratedrftransceiverdesignedforhuman-interfacedevices(hid).operatingat27
mhz,itintegratesmultiplecomponents(pll,rfmixer,simulatedsawfilter,tuningcircuit,andmiscellaneous
passivecomponents)toprovidefrequencyselectionfrom8discretechannels.thisintegrationlowers
组件,manufacturingandsystemcosts.
thetrf7900asimplifiessystemdesignbyreducingsystemcomponentcountandmanualcircuittuning.用
integratingthepll,sawfilter,andrfmixer,thetrf7900aeliminatesthemanualtuningofrlccircuits
requiredintraditionalimplementations.
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
productiondatainformationiscurrentasofpublicationdate.
copyright©2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
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