www.德州仪器.com
规格
ADS8406
SLAS426A–AUGUST2004–REVISEDDECEMBER2004
T
一个
=–40
°
Cto85
°
c,+va=5v,+vbd=3vor5v,v
ref
=4.096v,f
样本
=1.25mhz(unlessotherwisenoted)
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
ANALOGINPUT
全部-scaleinputvoltage
(1)
+in–(–in)–v
ref
V
ref
V
+in–0.2v
ref
+0.2
AbsoluteinputvoltageV
–in–0.2v
ref
+0.2
Inputcapacitance25pF
inputleakagecurrent0.5na
SYSTEMPERFORMANCE
Resolution16Bits
ADS8406I15
NomissingcodesBits
ADS8406IB16
ADS8406I–4
±
24
INLIntegrallinearity
(2)(3)
LSB
ADS8406IB–2
±
12
ADS8406I–2
±
12
DNLDifferentiallinearityLSB
ADS8406IB–1
±
0.51.25
ads8406i–2.5
±
12.5mv
E
O
Offseterror
(4)
ads8406ib–1.5
±
0.51.5mv
ads8406i–0.120.12
E
G
Gainerror
(4)(5)
%FS
ads8406ib–0.0980.098
atdc(0.2varoundv
ref
/2)80
CMRRCommonmoderejectionratiodB
+in–(–in)=1v
pp
at1MHz80
at7fffhoutputcode,+va
psrrdcpowersupplyrejectionratio=4.75vto5.25v,v
ref
=2LSB
4.096v
(4)
SAMPLINGDYNAMICS
Conversiontime500650ns
Acquisitiontime150ns
throughputrate1.25mhz
Aperturedelay2ns
Aperturejitter25ps
Stepresponse100ns
Overvoltagerecovery100ns
DYNAMICCHARACTERISTICS
V
在
=8V
pp
at100kHz–95
THDTotalharmonicdistortion
(6)
dB
V
在
=8V
pp
at500kHz–90
snrsignal-至-noiseratiov
在
=8V
pp
at100kHz90dB
sinadsignal-至-noise+distortionv
在
=8V
pp
at100kHz88dB
V
在
=8V
pp
at100kHz95
SFDRSpuriousfreedynamicrangedB
V
在
=8V
pp
at500kHz93
-3dbsmallsignalbandwidth5mhz
EXTERNALVOLTAGEREFERENCEINPUT
referencevoltageatrefin,v
ref
2.54.0964.2v
Referenceresistance
(7)
500k
Ω
(1)idealinputspan,doesnotincludegainoroffseterror.
(2)lsbmeansleastsignificantbit
(3)thisisendpointinl,notbestfit.
(4)measuredrelativetoanidealfull-scaleinput[+in–(–in)]of8.192v
(5)thisspecificationdoesnotincludetheinternalreferencevoltageerroranddrift.
(6)calculatedonthefirstnineharmonicsoftheinputfrequency
(7)canvary
±
20%
3
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