www.德州仪器.com
产品 预告(展)
FEATURESDESCRIPTION
产品
16
DAC
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
A0
A1
EN
一个
B
C
D
2:4
Decode
SDO
SDI
CS
CLK
DGND RS MSB LDAC V
SS
一个
地
F
一个
地
D
I
输出
D
R
FB
D
一个
地
C
I
输出
C
R
FB
C
一个
地
B
I
输出
C
R
FB
B
一个
地
一个
I
输出
一个
R
FB
一个
一个 B C D
V
REF
输入
寄存器
R
输入
寄存器
R
输入
寄存器
R
输入
寄存器
R
电源-在
重置
dac 一个
寄存器
R
dac b
寄存器
R
dac c
寄存器
R
dac d
寄存器
R
dac 一个
dac b
dac c
dac d
DAC8814
SBAS338–JANUARY2005
四方形,serialinput16-bitmultiplyingdigital-至-analogconverter
•
relativeaccuracy:1lsbmax
thedac8814isaquad,16-位,电流-outputdigi-
•
differentialnonlinearity:1lsbmax
tal-至-analogconverter(dac)designedtooperate
fromasingle+2.7vto5.0vsupply.
•
2-mafull-scalecurrent
±
20%,
withV
REF
=
±
10V
TheappliedexternalreferenceinputvoltageV
REF
•
0.5µssettlingtime
determinesthefull-scaleoutputcurrent.aninternal
feedbackresistor(r
FB
)providestemperaturetracking
•
midscaleorzero-scalereset
forthefull-scaleoutputwhencombinedwithan
•
FourSeparate4QMultiplyingReference
externali-至-vprecisionamplifier.
输入
Adoubledbufferedserialdatainterfaceoffers
•
referencebandwidth:10mhz
高-速,3-线,spiandmicrocontrollercompat-
•
referencedynamics:-105dbthd
ibleinputsusingserialdatain(sdi),时钟(clk),和
•
spi™-compatible3-wireinterface:
achip-选择(cs).inaddition,aserialdataoutpin
50MHz
(sdo)allowsfordaisy-chainingwhenmultiplepack-
•
DoubleBufferedRegistersEnable
agesareused.acommonlevel-sensitiveloaddac
strobe(ldac)inputallowssimultaneousupdateofall
•
SimultaneousMultichannelChange
dacoutputsfrompreviouslyloadedinputregisters.
•
InternalPowerOnReset
additionally,aninternalpoweronresetforcesthe
•
工业-standardpinconfiguration
outputvoltagetozeroatsystemturnon.anmsbpin
allowssystemresetassertion(rs)toforceallregis-
terstozerocodewhenmsb=0,ortohalf-规模
codewhenmsb=1.
•
AutomaticTestEquipment
•
仪器
thedac8814isavailableinanssoppackage.
•
DigitallyControlledCalibration
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
spiisatrademarkofmotorola,公司
productpreviewinformationconcernsproductsintheforma-
copyright©2005,texasinstrumentsincorporated
tiveordesignphaseofdevelopment.characteristicdataandother
specificationsaredesigngoals.texasinstrumentsreservesthe
righttochangeordiscontinuetheseproductswithoutnotice.
: 点此下载
