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AFE031 Datasheet(PDF) 29 Page - Texas Instruments

Part # AFE031
Description  AFE031 Powerline Communications Analog Front-End
PDF  59 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

AFE031 Datasheet(HTML) 29 Page - Texas Instruments

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1
(2
f
Z
p
1
C)
·
·
·
C =
1
Z
(2
f
C
2
p
)
·
·
L =
1
Z
(2
f
C
1
p
)
·
·
L =
2
1
(2
f
Z
p
2
C)
·
·
·
C =
2
29
AFE031
www.ti.com
SBOS531E – AUGUST 2010 – REVISED JUNE 2019
Product Folder Links: AFE031
Submit Documentation Feedback
Copyright © 2010–2019, Texas Instruments Incorporated
The following steps can be used to quickly design the passive passband filter. (Note that these steps produce an
approximate result.)
1. Choose the filter characteristic impedance, ZC:
–
For –6-db passband attenuation: R1 = R2 = ZC
–
For 0-db passband attenuation: R1 = ZC, R2 = 10 ● ZC
2. Calculate values for C1, C2, L1, and L2 using the following equations:
Table 4 and Table 5 shows standard values for common applications.
Table 4. Recommended Component Values for Fourth-Order Passive Bandpass Filter (0-db Passband
Attenuation)
FREQUENCY BAND
FREQUENCY
RANGE
(kHz)
CHARACTERISTIC
IMPEDANCE
(Ω)
R1
(Ω)
R2
(Ω)
C1
(nF)
C2
(nF)
L1
(μH)
L2
(μH)
CENELEC A
35 to 95
1k
1k
10k
4.7
1.5
1500
4700
CENELEC B, C, D
95 to 150
1k
1k
10k
1.7
1
1200
1500
SFSK
63 to 74
1k
1k
10k
2.7
2.2
2200
2200
Table 5. Recommended Component Values for Fourth-Order Passive Bandpass Filter (–6-db Passband
Attenuation)
FREQUENCY BAND
FREQUENCY
RANGE
(kHz)
CHARACTERISTIC
IMPEDANCE
(Ω)
R1
(Ω)
R2
(Ω)
C1
(nF)
C2
(nF)
L1
(μH)
L2
(μH)
CENELEC A
35 to 95
1k
1k
1k
4.7
1.5
1500
4700
CENELEC B, C, D
95 to 150
1k
1k
1k
1.7
1
1200
1500
SFSK
63 to 74
1k
1k
1k
2.7
2.2
2200
2200



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