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PCM1820 Datasheet(PDF) 49 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) 49 Page - Texas Instruments

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Table 8-40. Ultra-Low-Latency Decimation Filter Specifications
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Pass-band ripple
Frequency range is 0 to 0.457 × fS
–0.04
0.04
dB
Stop-band attenuation
Frequency range is 0.6 × fS onwards
88.3
dB
Group delay or latency
Frequency range is 0 to 0.325 × fS
5.2
1/fS
Group delay deviation
Frequency range is 0 to 0.325 × fS
–0.492
0.492
1/fS
Phase deviation
Frequency range is 0 to 0.325 × fS
–9.5
13.5
Degrees
8.3.6.7.3.4 Sampling Rate: 44.1 kHz to 48 kHz
Figure 8-55 shows the magnitude response and Figure 8-56 shows the pass-band ripple and phase deviation for
a decimation filter with a sampling rate of 44.1 kHz to 48 kHz. Table 8-41 lists the specifications for a decimation
filter with a 44.1-kHz to 48-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
D003
Figure 8-55. Ultra-Low-Latency 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
-25
-0.4
-20
-0.3
-15
-0.2
-10
-0.1
-5
0
0
0.1
5
0.2
10
0.3
15
0.4
20
0.5
25
D003
Pass-Band Ripple
Phase Deviation
Figure 8-56. Ultra-Low-Latency Decimation Filter
Pass-Band Ripple and Phase Deviation
Table 8-41. Ultra-Low-Latency Decimation Filter Specifications
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Pass-band ripple
Frequency range is 0 to 0.452 × fS
–0.015
0.015
dB
Stop-band attenuation
Frequency range is 0.6 × fS onwards
86.4
dB
Group delay or latency
Frequency range is 0 to 0.325 × fS
4.1
1/fS
Group delay deviation
Frequency range is 0 to 0.325 × fS
–0.525
0.525
1/fS
Phase deviation
Frequency range is 0 to 0.325 × fS
–10.3
14.5
Degrees
www.ti.com
TLV320ADC6120
SBASA92A – DECEMBER 2020 – REVISED JUNE 2021
Copyright © 2021 Texas Instruments Incorporated
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Product Folder Links: TLV320ADC6120



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