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PCM1820 Datasheet(PDF) 42 Page - Texas Instruments

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Part # PCM1820
Description  TLV320ADC6120 2-Channel, 768-kHz, Burr-BrownTM Audio ADC
PDF  130 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

PCM1820 Datasheet(HTML) 42 Page - Texas Instruments

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8.3.6.7.1.8 Sampling Rate: 352.8 kHz to 384 kHz
Figure 8-33 and Figure 8-34 respectively show the magnitude response and the pass-band ripple for a
decimation filter with a sampling rate of 352.8 kHz to 384 kHz. Table 8-30 lists the specifications for a decimation
filter with a 352.8-kHz to 384-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 8-33. Linear Phase Decimation Filter
Magnitude Response
Normalized Frequency (1/fS)
0
0.05
0.1
0.15
0.2
0.25
0.3
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
D001
Figure 8-34. Linear Phase Decimation Filter Pass-
Band Ripple
Table 8-30. Linear Phase Decimation Filter Specifications
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Pass-band ripple
Frequency range is 0 to 0.212 × fS
–0.05
0.05
dB
Stop-band attenuation
Frequency range is 0.58 × fS to 4 × fS
70.0
dB
Frequency range is 4 × fS onwards
108.8
Group delay or latency
Frequency range is 0 to 0.212 × fS
7.2
1/fS
8.3.6.7.1.9 Sampling Rate: 705.6 kHz to 768 kHz
Figure 8-35 and Figure 8-36 respectively show the magnitude response and the pass-band ripple for a
decimation filter with a sampling rate of 705.6 kHz to 768 kHz. Table 8-31 lists the specifications for a decimation
filter with a 705.6-kHz to 768-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 8-35. Linear Phase Decimation Filter
Magnitude Response
Normalized Frequency (1/fS)
0
0.05
0.1
0.15
0.2
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
D001
Figure 8-36. Linear Phase Decimation Filter Pass-
Band Ripple
Table 8-31. Linear Phase Decimation Filter Specifications
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Pass-band ripple
Frequency range is 0 to 0.113 × fS
–0.05
0.05
dB
Stop-band attenuation
Frequency range is 0.58 × fS to 2 × fS
75.0
dB
Frequency range is 2 × fS onwards
88.0
Group delay or latency
Frequency range is 0 to 0.113 × fS
5.9
1/fS
TLV320ADC6120
SBASA92A – DECEMBER 2020 – REVISED JUNE 2021
www.ti.com
42
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Copyright © 2021 Texas Instruments Incorporated
Product Folder Links: TLV320ADC6120



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