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AFE030 Datasheet(PDF) 28 Page - Texas Instruments

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Part # AFE030
Description  Powerline Communications Analog Front-End
PDF  58 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

AFE030 Datasheet(HTML) 28 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
AFE030
SBOS588A
– DECEMBER 2011 – REVISED DECEMBER 2011
www.ti.com
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
CHARACTERISTIC
RANGE
IMPEDANCE
R1
R2
C1
C2
L1
L2
FREQUENCY BAND
(kHz)
(
Ω)
(
Ω)
(
Ω)
(nF)
(nF)
(
μH)
(
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
CHARACTERISTIC
RANGE
IMPEDANCE
R1
R2
C1
C2
L1
L2
FREQUENCY BAND
(kHz)
(
Ω)
(
Ω)
(
Ω)
(nF)
(nF)
(
μH)
(
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
28
Copyright
© 2011, Texas Instruments Incorporated
Product Folder Link(s): AFE030



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