Datasheet

TLV320AIC31
SLAS497C – AUGUST 2006 – REVISED DECEMBER 2008 ............................................................................................................................................. www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
At +25 ° C, AVDD, DRVDD, IOVDD = 3.3 V, DVDD = 1.8 V, F
S
= 48 kHz, 16-bit audio data (unless otherwise noted).
TLV320AIC31
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
AUDIO DAC Differential Line Output, load = 10 k Ω , 50 pF
0-dB gain to line outputs. DAC output 1.414 V
RMS
Full-scale differential output
common-mode setting = 1.35 V, output level control
voltage
4.0 V
PP
gain = 0 dB
Signal-to-noise ratio, F
S
= 48 kHz, 0-dB gain to line outputs, zero signal
90 100 dB
A-weighted
(3)
applied, referenced to full-scale input level
F
S
= 48 kHz, 0-dB gain to line outputs,
Dynamic range, A-weighted 100 dB
1 kHz – 60 dB signal applied
Total harmonic distortion F
S
= 48 kHz, 1 kHz 0-dB input signal applied – 93 – 75 dB
Power-supply rejection ratio 234 Hz, 100 mV
PP
on AVDD, DRVDD1/2 81 dB
DAC channel separation (left to
1 kHz, 0 dB – 100 dB
right)
DAC interchannel gain mismatch 1-kHz input, 0-dB gain 0.1 dB
DAC Gain Error 1-kHz input, 0-dB gain – 0.26 dB
DAC DIGITAL INTERPOLATION FILTER, F
S
= 48 kHz
Passband High-pass filter disabled 0.45 × F
S
Hz
Passband ripple High-pass filter disabled ± 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
Sec
STEREO HEADPHONE DRIVER AC-Coupled Output Configuration
(3)
0-dB gain to high-power outputs.
0-dB full-scale output voltage 0.707 V
RMS
Output common-mode voltage setting = 1.35 V
First option 1.35
Programmable output common
Second option 1.50
mode voltage (applicable to Line V
Third option 1.65
Outputs also)
Fourth option 1.8
Maximum programmable output
9 dB
level control gain
Programmable output level
1 dB
control gain step size
R
L
= 32 Ω 15
P
O
Maximum output power mW
R
L
= 16 Ω 30
Signal-to-noise ratio,
94 dB
A-weighted
(4)
(3) Unless otherwise noted, all measurements use output common-mode voltage setting of 1.35 V, 0-dB output level control gain, 16- Ω
single-ended load.
(4) Ratio of output level with a 1-kHz full-scale input, to the output level playing an all-zero signal, measured A-weighted over a 20-Hz to
20-kHz bandwidth.
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