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PCM1840IRTWR 数据表(PDF) 21 Page - Texas Instruments

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部件名 PCM1840IRTWR
功能描述  PCM1840 Quad Channel, 32-Bit, 192-kHz, Burr-BrownTM Audio ADC
PDF  34 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

PCM1840IRTWR 数据表(HTML) 21 Page - Texas Instruments

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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
Normalized Frequency (1/fS)
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
D001
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
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
21
PCM1840
www.ti.com
SBAS989 – APRIL 2019
Product Folder Links: PCM1840
Submit Documentation Feedback
Copyright © 2019, Texas Instruments Incorporated
7.3.7.2.1.6
Sampling Rate: 96 kHz or 88.2 kHz
Figure 34 and Figure 35 respectively show the magnitude response and the pass-band ripple for a decimation
filter with a sampling rate of 96 kHz or 88.2 kHz. Table 13 lists the specifications for a decimation filter with an
96-kHz or 88.2-kHz sampling rate.
Figure 34. Linear Phase Decimation Filter Magnitude
Response
Figure 35. Linear Phase Decimation Filter Pass-Band
Ripple
Table 13. 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
73.6
dB
Frequency range is 4 × fS onwards
97.9
Group delay or latency
Frequency range is 0 to 0.454 × fS
17.1
1/fS
7.3.7.2.1.7
Sampling Rate: 192 kHz or 176.4 kHz
Figure 36 and Figure 37 respectively show the magnitude response and the pass-band ripple for a decimation
filter with a sampling rate of 192 kHz or 176.4 kHz. Table 14 lists the specifications for a decimation filter with an
192-kHz or 176.4-kHz sampling rate.
Figure 36. Linear Phase Decimation Filter Magnitude
Response
Figure 37. Linear Phase Decimation Filter Pass-Band
Ripple
Table 14. Linear Phase Decimation Filter Specifications
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Pass-band ripple
Frequency range is 0 to 0.3 × fS
–0.05
0.05
dB
Stop-band attenuation
Frequency range is 0.473 × fS to 4 × fS
70.0
dB
Frequency range is 4 × fS onwards
111.0
Group delay or latency
Frequency range is 0 to 0.3 × fS
11.9
1/fS



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