Datasheet
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DAC Path Filter
DAC DYNAMIC PERFORMANCE
TLV320AIC12, TLV320AIC13
TLV320AIC14, TLV320AIC15
TLV320AIC12K, TLV320AIC14K
SLWS115E – OCTOBER 2001 – REVISED JANUARY 2007
Fs = 8 KHz
(1) (2)
TEST
PARAMETER MIN TYP MAX MIN TYP MAX UNIT
CONDITIONS
FIR FILTER IIR FILTER
0 Hz to 30 Hz -0.5 0.2 -0.5 0.2
300 Hz to 3 Hz -0.25 0.25 -0.25 0.35
3.3 Hz -0.35 0.3 -0.75 0.3
Filter gain relative to gain
dB
at 1020 Hz
3.6 KHz -3 -3
4 kHz -40 -20
≥ 4.4 KHz -74 -60
(1) The filter gain outside of the passband is measured with respect to the gain at 1020 Hz. The input signal is the digital equivalent of a
sine wave (digital full scale = 0 dB). The nominal differential DAC channel output with this input condition = 4 V
I(PP)
. The pass band is 0
to 3600 Hz for an 8-KHz sample rate. This pass band scales linearly with the sample rate.
(2) The filter characteristics are specified by design and are not tested in production.
TEST
PARAMETER MIN TYP MAX MIN TYP MAX UNIT
CONDITIONS
AIC12/13/14/15 AIC12k/14k
DAC Line Output (OUTP1, OUTM1)
(1)
V
I
= 0 dB 80 92 75 92
SNR Signal-to-noise ratio V
I
= -9 dB 75 83 83
V
I
= -40 dB 51
V
I
= 0 dB 78 85 70 85
Total harmonic
THD V
I
= -9 dB 74 83 83 dB
distortion
V
I
= -40 dB 62
V
I
= 0 dB 75 82 82
Signal-to-total harmonic
THD+N V
I
= -9 dB 70 77 77
distortion + noise
V
I
= -40 dB 44
DAC Headphone Output (OUTP2, OUTP3)
(1) (2)
V
I
= 0 dB 78 89 89
SNR Signal-to-noise ratio dB
V
I
= -9 dB 71 81 81
V
I
= 0 dB 78 82 82
Total harmonic
THD dB
distortion
V
I
= -9 dB 73 80 80
V
I
= 0 dB 75 80 80
Signal-to-total harmonic
THD+N dB
distortion + noise
V
I
= -9 dB 69 78 78
DAC Speaker Output (OUTP2, OUTMV)
(1) (3)
SNR Signal-to-noise ratio V
I
= 0 dB 91 dB
Total harmonic
THD V
I
= 0 dB 80 dB
distortion
(1) The test condition is the digital equivalent of a 1020 Hz input signal with an 8-kHz conversion rate. The test is measured at output of
application schematic low-pass filter. The test is conducted in 16-bit mode.
(2) The DAC headphone output spec between OUTP2, OUTP3, and OUTMV is valid only for the AIC12/13 and the AIC12K
(3) The DAC speaker output spec between OUTP2, OUTP3, and OUTMV is valid only for the AIC12K.
9
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