www.德州仪器.com
DACDYNAMICPERFORMANCE
tlv320aic20,tlv320aic21
tlv320aic24,tlv320aic25
tlv320aic20k,tlv320aic24k
SLAS363D–MARCH2002–REVISEDAPRIL2005
aic20/21/24/25aic20k/24k
PARAMETERTESTCONDITIONS
MINTYPMAXMINTYPMAXUNIT
thetestconditionisthedigitalequivalentofa1020-hzinputsignalwithan8-khzconversionrate.
daclineoutput(lineo-,lineo+)
thetestismeasuredatoutputoftheapplicationschematiclow-passfilter.thetestisconductedin
UsingFIRFilter
16-bitmode.
V
I
=0dB88928092
snrsignal-至-noiseratio
V
I
=-9db818383
V
I
=0dB84907090
THDTotalHarmonicDistortiondB
V
I
=-9db778484
V
I
=0dB828888
信号-至-totalharmonic
THD+N
Distortion+noise
V
I
=-9db768080
thetestconditionisthedigitalequivalentofa1020-hzinputsignalwithan8-khzconversionrate.
daclineoutput(lineo-,lineo+)
thetestismeasuredatoutputoftheapplicationschematiclow-passfilter.thetestisconductedin
UsingIIRFilter
16-bitmode.
V
I
=0dB8383
snrsignal-至-noiseratio
V
I
=-9db7474
V
I
=0dB8585
THDTotalHarmonicDistortiondB
V
I
=-9db8080
V
I
=0dB8080
信号-至-totalharmonic
THD+N
Distortion+noise
V
I
=-9db7373
thetestconditionisthedigitalequivalentofa1020-hzinputsignalwithan8-khzconversionrate.
dacheadphoneoutput(hdso-,
thetestismeasuredatoutputoftheapplicationschematiclow-passfilter.thetestisconductedin
hdso+),(hnso-,hnso+)
(1)
16-bitmode.
V
I
=0dB9292
snrsignal-至-noiseratio
V
I
=-9db8383
V
I
=0dB9090
THDTotalHarmonicDistortiondB
V
I
=-9db8989
V
I
=0dB8888
信号-至-totalharmonic
THD+N
Distortion+noise
V
I
=-9db8282
thetestconditionisthedigitalequivalentofa1020-hzinputsignalwithan8-khzconversionrate.
dacspeakeroutput(spko-,
thetestismeasuredatoutputoftheapplicationschematiclow-passfilter.thetestisconductedin
spko+)
(1)(2)
16-bitmode.
V
I
=0dB9191
snrsignal-至-noiseratio
V
I
=-9db8383
V
I
=0dB9191
THDTotalHarmonicDistortiondB
V
I
=-9db9191
V
I
=0dB8888
信号-至-totalharmonic
THD+N
Distortion+noise
V
I
=-9db8282
(1)theconversionrateis8khz.
(2)thespeakerdriverisvalidonlyfortheaic20/21/20k.
8
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