VOUT(DIFF)<" />
參數(shù)資料
型號: LTC6601IUF-2#PBF
廠商: Linear Technology
文件頁數(shù): 26/40頁
文件大小: 0K
描述: IC DRVR FILTER/ADC LN 20-QFN
標(biāo)準(zhǔn)包裝: 91
頻率 - 截止或中心: 27MHz
濾波器數(shù): 3
濾波器階數(shù): 2nd
電源電壓: 2.7 V ~ 5.25 V
安裝類型: 表面貼裝
封裝/外殼: 20-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 20-QFN 裸露焊盤(4x4)
包裝: 管件
產(chǎn)品目錄頁面: 1323 (CN2011-ZH PDF)
LTC6601-2
32
66012f
APPLICATIONS INFORMATION
Figure 13. Modied Filter Topology and Equations
+
VOUT(DIFF)
66012 F13
VIN(DIFF)
C1
C2
R3
R2
R3
R1
R2
C3A
C3B
49.9Ω
R4A
REXT
R4B
C1
C2
R4 = R4A + R4B + REXT
C3 = C3A /2 (C3A = C3B)
f3dB =
fO
6089
3568 Q4 1788 Q2 + 447
()+1.287105 2Q2 1
()
507.6 Q
Q =
0.2236 fO
2.109 105
9.891 1012 f3dB
4
5.486 109 fO
4
()+120 5.526109 f
3dB
2 + 3.082 106 fO2
()
16 fO
2 8.29 109 f3dB2 + 4.127 109 fO2
() 6.6381010 f
3dB
4
()
R4 =
1.25 104 C1 Q R2
559 C1 R2
C2 + 2 C3
C1
50 Q C1 125 GAIN + R2 + 125
() C2R2
()
VOUT(DIFF)
VIN(DIFF)
= –
GAIN
R2 R3 C1 C2 + 2 C3
()
S2 +
R1 R2 2 R3 + R4
()+R3R4
()+R2R3R4
R1R2 R3 R4 C2 + 2 C3
()
S +
1
R2 R3 C1 C2 + 2 C3
()
GAIN = –
VOUT(DIFF)
VIN(DIFF)
= – R2
R1
fO =
1
2 R2 R3 C1 C2 + 2 C3
()
Q =
R3
R2
C2
C1
+ 2 C3
C1
1+ 1+|GAIN|+ 2
R2
R4
R3
R2
C2
C1
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