Datasheet
TLV320AIC3256
SLOS630B –DECEMBER 2010–REVISED JANUARY 2013
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Electrical Characteristics, Audio DAC Outputs (continued)
At 25°C, Vsys, AVdd, DVdd, IOVdd, DVdd_CP, DRVdd_HP = 1.8V, f
S
(Audio) = 48kHz, C
REF
= 1µF on REF PIN, PLL and
Charge pump disabled unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DAC Gain Error 500mV
RMS
output, 1kHz input full scale signal 0.5 dB
DAC Mute Attenuation Mute 118 dB
DAC channel separation –3dB, 1kHz signal, between left and right HP 102 dB
out
100mVpp, 1kHz signal applied to AVdd 66 dB
DAC PSRR
100mVpp, 217Hz signal applied to AVdd 77 dB
Power Delivered THD ≤ –40dB 26.5 mW
FS2 Full scale output voltage Load = 32Ω 0.85
V
(for THD ≤ –40dB)
SNR Signal-to-noise ratio, A-weighted
(1) (2)
All zeros fed to DAC input, Load = 32Ω 96 dB
Power Delivered THD ≤ –40dB, Load = 32Ω 22.5 mW
AUDIO DAC – STEREO SINGLE-ENDED HEADPHONE OUTPUT (UNIPOLAR CIRCUIT CONFIGURATION)
Load = 16Ω (single-ended), 56pF,
Headphone Output on AVdd Supply,
Input and Output CM = 0.9V
Device Setup DOSR = 128, MCLK = 256 * f
S
,
Channel Gain = 0dB
Processing Block = PRB_P1,
Power Tune = PTM_P3
Full scale output voltage (0dB) 0.5 V
RMS
SNR Signal-to-noise ratio, A-weighted
(3) (4)
All zeros fed to DAC input 87 100 dB
DR Dynamic range, A-weighted
(3) (4)
-60dB 1kHz input full-scale signal 100 dB
THD+N Total Harmonic Distortion plus Noise –3dB full-scale, 1kHz input signal –83 –70 dB
(3) Ratio of output level with 1kHz full-scale sine wave input, to the output level with the inputs short circuited, measured A-weighted over a
20Hz to 20kHz bandwidth using an audio analyzer.
(4) All performance measured with 20kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter may result in higher
THD+N and lower SNR and dynamic range readings than shown in the Electrical Characteristics. The low-pass filter removes out-of-
band noise, which, although not audible, may affect dynamic specification values.
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