參數(shù)資料
型號(hào): LTC1060CSW
廠商: Linear Technology
文件頁(yè)數(shù): 9/20頁(yè)
文件大?。?/td> 0K
描述: IC FILTER BUILDING BLOCK 20-SOIC
標(biāo)準(zhǔn)包裝: 38
濾波器類型: 通用開關(guān)電容器
頻率 - 截止或中心: 30kHz
濾波器數(shù): 2
濾波器階數(shù): 4th
電源電壓: ±2.37 V ~ 5 V
安裝類型: 表面貼裝
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 20-SOIC
包裝: 管件
其它名稱: LTC1060CS
17
LTC1060
1060fb
mode 2b section (Figure 22), has a gain exceeding unity
which limits the dynamic range of the overall filter. For
very selective bandpass/bandreject filters, the mode 3a
approach, as in Figure 20, yields better dynamic range
since the external op amp helps to optimize the dynamics
of the output nodes of the LTC1060.
Figure 20. Combining Mode 3 with Mode 3a to Make The 4th Order BP Filter of Figure 21 with Improved
Dynamics. The Gain at Each Output Node is ≤ 0dB for all Input Frequencies.
Figure 21. The BP Filter of Figure 20, When Swept From a 2kHz to 20kHz Center Frequency.
1.5kHz
–30dB
–20dB
–10dB
0dB
2.5kHz
–50dB
–40dB
2kHz
1.75kHz
2.25kHz
fCLK = 100kHz
15kHz
–30dB
–20dB
–10dB
0dB
25kHz
–50dB
–40dB
20kHz
17.5kHz
22.5kHz
fCLK = 1MHz
TLC1060 CMO03
LTC1060 CM02
VIN
R42
R32
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V+ = 7.5V
–7.5V
VOUT
T2L OR CMOS
CLOCK IN
R22
LTC1060
R11
7.5V
PRECISE RESISTOR VALUES
R11 = 155.93k
RH1 = 13.2k
R42 = 5k
NOTE: FOR CLOCK FREQUENCIES ABOVE 700kHz, A 12pF CAPACITOR ACROSS R41 AND A 20pF
CAPACITOR ACROSS R42 WERE USED TO PREVENT THE PASSBAND RIPPLE FROM ANY
ADDITIONAL PEAKING
R21 = 5k
RL1 = 10.74k
RL2 = 6.11k
R31 = 152k
R22 = 5.26k
RH2 = 5k
R41 = 5.27k
R32 = 151.8k
RG = 37.3k
–7.5V
R31
R21
R41
RL1
RH1
RL2
RH2
+
RG
EXTERNAL
OP AMP
LPA
BPA
HPA
INVA
S1A
SA/B
VA
+
VD
+
LSh
CLKA
LPB
BPB
HPB
INVB
S1B
AGND
VA
VD
50/100
CLKB
COMM E TS ON THE M ODES OF OPERATIO
U
W
U
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