Datasheet
TLV320AIC3256
www.ti.com
SLOS630B –DECEMBER 2010–REVISED JANUARY 2013
Electrical Characteristics, Audio DAC Outputs
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
AUDIO DAC – STEREO SINGLE-ENDED LINE OUTPUT (CM=0.9V)
Load = 10kΩ (single-ended), 56pF
Line Output on AVdd Supply
Input and Output CM=0.9V
Device Setup DOSR = 128, MCLK = 256 * f
S
,
Channel Gain = 0dB, word length = 16 bits,
Processing Block = PRB_P1,
Power Tune = PTM_P3
Full scale output voltage (0dB) 0.5 V
RMS
SNR Signal-to-noise ratio A-weighted
(1) (2)
All zeros fed to DAC input 87 100 dB
DR Dynamic range, A-weighted
(1) (2)
–60dB 1kHz input full-scale signal, Word 100 dB
length = 20 bits
THD+N Total Harmonic Distortion plus Noise –3dB full-scale, 1kHz input signal –81 –70 dB
DAC Gain Error 0dB, 1kHz input full scale signal 0.5 dB
DAC Mute Attenuation Mute 121 dB
DAC channel separation –1dB, 1kHz signal, between left and right HP 108 dB
out
100mVpp, 1kHz signal applied to AVdd 72 dB
DAC PSRR
100mVpp, 217Hz signal applied to AVdd 80 dB
AUDIO DAC – STEREO SINGLE-ENDED LINE OUTPUT (CM=0.75V)
Load = 10kΩ (single-ended), 56pF
Line Output on AVdd Supply
Input and Output CM = 0.75V; AVdd = 1.5V
DOSR = 128
Device Setup MCLK=256 * f
S
Channel Gain = 0dB
word length = 20-bits
Processing Block = PRB_P1
Power Tune = PTM_P4
Full scale output voltage (0dB) 0.375 V
RMS
SNR Signal-to-noise ratio, A-weighted
(1) (2)
All zeros fed to DAC input 99 dB
DR Dynamic range, A-weighted
(1) (2)
–60dB 1kHz input full-scale signal 98 dB
THD+N Total Harmonic Distortion plus Noise –1dB full-scale, 1kHz input signal –77 dB
AUDIO DAC – STEREO SINGLE-ENDED HEADPHONE OUTPUT (GROUND-CENTERED CIRCUIT CONFIGURATION)
Load = 16Ω (single-ended), 56pF
Input CM = 0.9V, Output CM = 0V
DOSR = 128,
MCLK=256 * f
S
, Channel Gain = 0dB
Device Setup
word length = 16 bits;
Processing Block = PRB_P1
Power Tune = PTM_P3
FS1 Full scale output voltage 0.65 V
RMS
(for THD ≤ –40dB)
SNR Signal-to-noise ratio, A-weighted
(1) (2)
All zeros fed to DAC input 85 95 dB
DR Dynamic range, A-weighted
(1) (2)
–60dB 1kHz input full-scale signal, Word 93 dB
Length = 20 bits, Power Tune = PTM_P4
THD+N Total Harmonic Distortion plus Noise 500mV
RMS
output (corresponds to FS1 – –70 –55 dB
2.3dB),
1-kHz input signal
(1) 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.
(2) 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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