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PCM1820 Datasheet(PDF) 21 Page - Texas Instruments

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Part # PCM1820
Description  PCM182(0/1)-Q1 Stereo Channel, 32-Bit, 192-kHz, Burr-BrownTM Audio ADC
PDF  44 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

PCM1820 Datasheet(HTML) 21 Page - Texas Instruments

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8.3.6.2.1.4 Sampling Rate: 32 kHz or 29.4 kHz
Figure 8-15 and Figure 8-16 respectively show the magnitude response and the pass-band ripple for a
decimation filter with a sampling rate of 32 kHz or 29.4 kHz. Table 8-11 lists the specifications for a decimation
filter with an 32-kHz or 29.4-kHz sampling rate.
Normalized Frequency (1/fS)
0
0.4
0.8
1.2
1.6
2
2.4
2.8
3.2
3.6
4
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
D001
Figure 8-15. Linear Phase Decimation Filter
Magnitude Response
Normalized Frequency (1/fS)
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
D001
Figure 8-16. Linear Phase Decimation Filter Pass-
Band Ripple
Table 8-11. Linear Phase Decimation Filter Specifications
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Pass-band ripple
Frequency range is 0 to 0.454 × fS
–0.05
0.05
dB
Stop-band attenuation
Frequency range is 0.58 × fS to 4 × fS
73.7
dB
Frequency range is 4 × fS onwards
107.2
Group delay or latency
Frequency range is 0 to 0.454 × fS
16.9
1/fS
8.3.6.2.1.5 Sampling Rate: 48 kHz or 44.1 kHz
Figure 8-17 and Figure 8-18 respectively show the magnitude response and the pass-band ripple for a
decimation filter with a sampling rate of 48 kHz or 44.1 kHz. Table 8-12 lists the specifications for a decimation
filter with an 48-kHz or 44.1-kHz sampling rate.
Normalized Frequency (1/fS)
0
0.4
0.8
1.2
1.6
2
2.4
2.8
3.2
3.6
4
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
D001
Figure 8-17. Linear Phase Decimation Filter
Magnitude Response
Normalized Frequency (1/fS)
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
D001
Figure 8-18. Linear Phase Decimation Filter Pass-
Band Ripple
Table 8-12. Linear Phase Decimation Filter Specifications
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Pass-band ripple
Frequency range is 0 to 0.454 × fS
–0.05
0.05
dB
Stop-band attenuation
Frequency range is 0.58 × fS to 4 × fS
73.8
dB
Frequency range is 4 × fS onwards
98.1
Group delay or latency
Frequency range is 0 to 0.454 × fS
17.1
1/fS
www.ti.com
PCM1820-Q1, PCM1821-Q1
SBASAH4 – APRIL 2022
Copyright © 2022 Texas Instruments Incorporated
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Product Folder Links: PCM1820-Q1 PCM1821-Q1



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