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
參數(shù)資料
型號: AFE031AIRGZT
廠商: Texas Instruments
文件頁數(shù): 20/57頁
文件大?。?/td> 0K
描述: IC AFE POWERLINE COMM 48VQFN
特色產(chǎn)品: An Intelligent Solar Micro-Inverter Solution
標準包裝: 1
位數(shù): 10
通道數(shù): 1
電壓 - 電源,模擬: 3 V ~ 3.6 V
電壓 - 電源,數(shù)字: 3 V ~ 3.6 V
封裝/外殼: 48-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 48-VQFN 裸露焊盤(7x7)
包裝: 標準包裝
其它名稱: 296-29692-6
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
SBOS531D – AUGUST 2010 – REVISED MAY 2012
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)
(
μH)
(
μH)
CENELEC A
35 to 95
1k
10k
4.7
1.5
1500
4700
CENELEC B, C, D
95 to 150
1k
10k
1.7
1
1200
1500
SFSK
63 to 74
1k
10k
2.7
2.2
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)
(
μH)
(
μH)
CENELEC A
35 to 95
1k
4.7
1.5
1500
4700
CENELEC B, C, D
95 to 150
1k
1.7
1
1200
1500
SFSK
63 to 74
1k
2.7
2.2
2200
Copyright 2010–2012, Texas Instruments Incorporated
27
Product Folder Link(s): AFE031
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