參數(shù)資料
型號(hào)： LTC1563-3
廠商： Linear Technology Corporation
英文描述： Active RC, 4th Order Lowpass Filter Family(有源RC 4階低通濾波器)
中文描述： 有源RC，四階低通濾波器系列（有源區(qū)局4階低通濾波器）
文件頁數(shù)： 16/20頁
文件大?。?/td> 269K
代理商： LTC1563-3
16
LTC1563-2/LTC1563-3
TYPICAL APPLICATIO S
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LP
SA
NC
INVA
NC
LPA
AGND
V
–
V
+
LPB
NC
INVB
NC
SB
NC
EN
V
OUT
3.3V
V
IN
1563 TA09
R31
17.8k
R21
R32
20.5k
R22
28.7k
32.4k
0.1
μ
F
LTC1563-2
0.1
μ
F
C12
560pF
C11
560pF
R
A2
3.16k
R
B2
25.5k
R
A1
3.16k
R
B1
29.4k
FREQUENCY (Hz)
10k
G
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
100k
1M
1563 TA09a
100kHz, 6th Order Pseudo-Butterworth
Frequency Response
TEXTBOOK BUTTERWORTH
f
O
1 = 100kHz
f
O
2 = 100kHz
f
O
3 = 100kHz
PSEUDO-BUTTERWORTH
f
O
1 = 100kHz
f
O
2 = 100kHz
f
O
3 = 100kHz
f
O
4 = 100kHz
Q1 = 1.9319
Q2 = 0.7071
Q3 = 0.5176
Q1 = 1.9319
Q2 = 0.7358
Real Poles
Real Poles
The complex, 2nd order section of the textbook design
with the lowest Q is replaced with two real first order poles.
The Q of another section is slightly altered such that the
final filter’s response is indistinguisable from a textbook
Butterworth response.
The f
O
and Q values listed above can be entered in
FilterCAD’s Enhanced Design window as a custom re-
sponse filter. After entering the coefficients, FilterCAD will
produce a schematic of the circuit. The procedure is as
follows:
1. After starting FilterCAD, select the Enhanced Design
window.
2. Select the Custom Response and set the custom F
C
to
1Hz.
3. In the Coefficients table, go to the Type column and click
on the types listed and set the column with two LP types
and two LP1 types. This sets up a template of a 6th order
filter with two 2nd order lowpass sections and two 1st
order lowpass sections.
4. Enter the f
O
and Q coefficients as listed above. For a
Butterworth filter, use the same coefficients as the
example circuit above except set all of the f
O
to 1Hz.
5. Set the custom F
C
to the desired cutoff frequency. This
will automatically multiply all of the f
O
coefficients. You
have now finished the design of the filter and you can
click on the frequency response or step response
buttons to verify the filter’s response.
6. Click on the Implement button to go on to the filter
implementation stage.
7. In the Enhanced Implement window, click on the Active
RC button to choose the LTC1563-2 part. You are now
done with the filter’s implementation. Click on the
schematic button to view the resulting circuit.
Other Pseudo Filter Response Coefficients (All f
O
Are Normalized for a 1Hz Filter Cutoff)
BESSEL
0.1dB RIPPLE CHEBYSHEV
0.5dB RIPPLE CHEBYSHEV
f
O
1
1.9070
1.0600
Q1
1.0230
3.8500
f
O
2
1.6910
0.8000
Q2
0.6110
1.0000
f
O
3
1.6060
0.6000
f
O
4
1.6060
1.0000
TRANSITIONAL GAUSSIAN TO 12dB
2.1000
2.2000
1.2500
0.8000
1.2500
1.2500
TRANSITIONAL GAUSSIAN TO 6dB
1.5000
2.8500
1.0500
0.9000
0.9000
0.9000
1.0100
5.3000
0.7200
1.2000
0.5000
0.8000
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參數(shù)描述
LTC1563-3CGN 功能描述:IC FILTER LP RC 4TH ORDER 16SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時(shí)間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR)
LTC1563-3CGN#PBF 功能描述:IC FILTER LP RC 4TH ORDER 16SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時(shí)間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR)
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LTC1563-3CGN#TRPBF 功能描述:IC FILTER LP RC 4TH ORDER 16SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時(shí)間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR)
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