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ELECTRICALCHARACTERISTICS
TLV320AIC31
SLAS497–DECEMBER2005
recommendedoperatingconditions(持续)
overoperatingfree-airtemperaturerange(unlessotherwisenoted)
MINNOMMAXUNIT
T
一个
operatingfree-airtemperature–4085
°
C
At25
°
c,avdd,drvdd,iovdd=3.3v,dvdd=1.8v,fs=48-khz,16-bitaudiodata(unlessotherwisenoted)
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
AUDIOADC
inputsignallevel(0-db)单独的-endedinput0.707v
RMS
信号-至-noiseratio,fs=48khz,0dbpgagain,in1inputsselectedand
8092dB
一个-weighted
(1)(2)
交流-shortedtogether
fs=48khz,1-khz–60dbfull-scaleinputappliedat
dynamicrange,一个-weighted
(1)(2)
92dB
in1inputs,0-dbpgagain
–90-75db
fs=48khz,1-khz–2dbfull-scaleinputappliedat
THDTotalharmonicdistortion
in1inputs,0-dbpgagain
0.003%0.018%
1khz,100mvpponavdd,drvdd,单独的-结束
46
输入
PowersupplyrejectionratiodB
1khz,100mvpponavdd,drvdd,differentialinput68
adcchannelseparation1khz,–1dbin2ltoin2r–87db
adcgainerror1khzinput,0dbpgagain0.7db
ADCprogrammablegain
1-khzinputtone,r
源
<50
Ω
59.5db
amplifiermaximumgain
ADCprogrammablegain
0.5db
amplifierstepsize
in1inputs,routedtosingleadc
20
Inputmixattenuation=0dB
in2inputs,inputmixattenuation=0db20
Inputresistancek
Ω
in1inputs,
80
inputmixattenuation=–12dB
in2inputs,
80
inputmixattenuation=–12dB
InputcapacitanceIN1inputs10pF
Inputlevelcontrolminimum
0dB
attenuationsetting
Inputlevelcontrolmaximum
12dB
attenuationsetting
Inputlevelcontrolattenuation
1.5db
stepsize
adcdigitaldecimationfilter,fs=48khz
filtergainfrom0to0.39fs
±
0.1db
filtergainat0.4125fs–0.25db
filtergainat0.45fs–3db
filtergainat0.5fs–17.5db
filtergainfrom0.55fsto64fs–75db
filtergroupdelay17/fssec
(1)ratioofoutputlevelwith1-khzfull-scalesinewaveinput,totheoutputlevelwiththeinputsshortcircuited,measureda-weightedovera
20-hzto20-khzbandwidthusinganaudioanalyzer.
(2)allperformancemeasurementsdonewith20-khzlow-passfilterand,wherenoted,一个-weightedfilter.failuretousesuchafiltermay
resultinhigherthd+nandlowersnranddynamicrangereadingsthanshownintheelectricalcharacteristics.thelow-passfilter
removesout-的-bandnoise,这个,althoughnotaudible,mayaffectdynamicspecificationvalues.
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