Specifications
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TLV320AIC34
SLAS538A – OCTOBER 2007 – REVISED NOVEMBER 2007
ELECTRICAL CHARACTERISTICS (continued)
At 25 ° C, AVDD_DAC, DRVDD, IOVDD = 3.3 V, DVDD = 1.8 V, f
S
= 48-kHz, 16-bit audio data (unless otherwise noted)
TEST CONDITIONS MIN TYP MAX UNIT
AUDIO DAC – SINGLE-ENDED HEADPHONE OUTPUT, Load = 16 Ω ,
Codec Block A, B
0-dB input full-scale signal, output volume control = 0 dB,
Full-scale output voltage 0.707 Vrms
output common-mode setting = 1.35 V
No input signal, output volume control = 0 dB, output
93 dB
common-mode setting = 1.35 V, f
S
= 48 kHz, A-weighted
SNR Signal-to-noise ratio
No input signal, output volume control = 0 dB, output
common-mode setting = 1.35 V, f
S
= 48 kHz, 50% DAC 94 dB
current boost, A-weighted
– 60 dB, 1-kHz input full-scale signal, output volume control =
Dynamic range 0 dB, output common-mode setting = 1.35 V, f
S
= 48 kHz, 89 dB
A-weighted
0-dB, 1-kHz input full-scale signal, output volume control =
THD Total harmonic distortion – 74 – 65 dB
0 dB, output common-mode setting = 1.35 V, f
S
= 48 kHz
217-Hz signal applied to DRVDD, AVDD_DAC 41
PSRR Power-supply rejection ratio dB
1-kHz signal applied to DRVDD, AVDD_DAC 44
0-dB full-scale input signal between left and right headphone
DAC channel separation 84 dB
out
0-dB, 1-kHz input full-scale signal, output volume control =
DAC gain error – 0.8 dB
0 dB, output common-mode setting = 1.35 V, f
S
= 48 kHz
AUDIO DAC – LINEOUT AND HEADPHONE OUT DRIVERS,
Codec Block A, B
First option 1.35
Second option 1.5
Output common mode V
Third option 1.65
Fourth option 1.8
Output volume-control maximum
9 dB
setting
Output volume-control step size 1 dB
AUDIO DAC – DIFFERENTIAL SPEAKER OUTPUT, R
LOAD
= 8 Ω , 1 kHz Input Signal,
Codec Block A ONLY
Full-scale output voltage, codec 0-dB input full-scale signal, output common-mode setting =
1.414 V
RMS
block A only 1.35 V, output volume control = 0 dB
Signal-to-noise ratio, codec A-weighted, f
S
= 48 kHz, output volume control = 0 dB, no
SNR 96 dB
block A only input signal, output common-mode setting = 1.35 V
Total harmonic distortion, codec f
S
= 48 kHz, 1-kHz input full-scale signal, output volume
THD – 67 dB
block A only control = 0 dB, output common-mode setting = 1.35 V
DAC gain error, codec block A f
S
= 48 kHz, 1-kHz input full-scale signal, output volume
– 2 dB
only control = 0 dB, output common-mode setting = 1.35 V
DAC DIGITAL INTERPOLATION – FILTER f
S
= 48-ksps
Codec Block A, B
Pass band 0 0.45 f
S
Hz
Pass-band ripple ± 0.06 dB
Transition band 0.45 f
S
0.55 f
S
Hz
Stop band 0.55 f
S
7.5 f
S
Hz
Stop-band attenuation 65 dB
Group delay 21/f
S
s
DIGITAL I/O
Codec Block A, B
V
IL
Input low level – 0.3 0.3 IOVDD V
IOVDD > 1.6 V 0.7 IOVDD
V
IH
Input high level
(4)
V
IOVDD < 1.6 V 1.1
V
OL
Output low level 0.1 IOVDD V
V
OH
Output high level 0.8 IOVDD V
(4) When IOVDD < 1.6 V, minimum V
IH
is 1.1 V.
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