TLV320AIC3110_14 Datasheet, PDF (36/127 Pages) Texas Instruments – Low-Power Audio Codec With Audio Procsessing and Stereo Class-D Speaker Amplifier

TLV320AIC3110
SLAS647 – DECEMBER 2009
ADC Channel Response for Decimation Filter A
(Red Line Corresponds to –73 dB)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
Frequency Normalized to f_S
Figure 5-13. ADC Decimation Filter A, Frequency Response
5.4.4.4.2 Decimation Filter B
Filter B is intended to support sampling rates up to 96 kHz at an oversampling ratio of 64.
Table 5-21. ADC Decimation Filter B, Specifications
Parameter
AOSR = 64
Filter gain pass band
Filter gain stop band
Filter group delay
Pass-band ripple, 8 ksps
Pass-band ripple, 44.1 ksps
Pass-band ripple, 48 ksps
Pass-band ripple, 96 ksps
Condition
0 … 0.39 f_S
0.60 f_S … 32 f_S
0 … 0.39 f_S
0 … 0.39 f_S
0 … 0.39 f_S
0 … 20 kHz
Value (Typical)
±0.077
–46
11/f_S
0.076
0.06
0.06
0.11
ADC Channel Response for Decimation Filter A
(Red Line Corresponds to –44 dB)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
Frequency Normalized to f_S
Figure 5-14. ADC Decimation Filter B, Frequency Response
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Unit
dB
dB
s
dB
dB
dB
dB
36
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