参数资料
型号: LTC1562ACG#TR
厂商: Linear Technology
文件页数: 8/28页
文件大小: 0K
描述: IC FILTER UNIV RC QUAD LN 20SSOP
标准包装: 1,800
滤波器类型: 通用连续计时
频率 - 截止或中心: 150kHz
滤波器数: 4
滤波器阶数: 8th
电源电压: 4.75 V ~ 10.5 V,±4.75 V ~ 5.25 V
安装类型: 表面贴装
封装/外壳: 20-SSOP(0.209",5.30mm 宽)
供应商设备封装: 20-SSOP
包装: 带卷 (TR)
16
LTC1562
1562fa
(Basic)
TYPICAL APPLICATIONS
U
Amplitude Response
8th Order Bandpass Filter, Single 5V Supply,
– 3dB Bandwidth =
Center Frequency
10
R21 = R23 = 10.6k
Quick Design Formulas for Center Frequency fC (Recommended Range 40kHz to 140kHz):
2
100kHz
C
RQ1 = RQ3 = 164.6k
100kHz
C
100kHz
C + 319kHz
RQ2 = RQ4 = 143.2k
RIN2 = RIN4 =
100kHz
C + 294kHz
100kHz
C + 286kHz
R22 = R24 = 9.7k
100kHz
C
100kHz
C
CIN1 = CIN3 = 159pF
2
10k
RQ1
R22RQ1CIN1
(10k)(10.6pF)
Notes: RQ1, R22 and CIN1 should be rounded to the nearest standard finite-tolerance value before using these
values in the later formulas.
Example: Center frequency fC of 80kHz. The formulas give R21 = R23 = 16.56k, nearest standard 1% value 16.5k.
RQ1 = RQ3 = 51.56k, nearest 1% value 51.1k. R22 = R24 = 15.15k, nearest 1% value 15k. RQ2 = RQ4 = 47.86k,
nearest 1% value 47.5k. CIN1 = CIN2 = 31.11pF using 51.1k for RQ1, nearest standard 5% capacitor value 33pF.
This and the 1% value R22 = 15k also go into the calculation for RIN2 = RIN4 = 65.20k, nearest 1% value 64.9k.
1562 TA07 TABLE
1
2
3
5
6
8
9
10
20
19
18
16
15
13
12
11
INV B
V1 B
V2 B
V+
SHDN
V2 A
V1 A
INV A
INV C
V1 C
V2 C
V
AGND
V2 D
V1 D
INV D
LTC1562
RIN2
RIN4
VIN
VOUT
1562 TA07a
5V
RQ1
R21
R23
0.1
F
1
F
RQ3
CIN3
CIN1
R24
RQ4
RQ2
R22
SCHEMATIC INCLUDES PIN NUMBERS FOR 20-PIN PACKAGE.
PINS 4, 7, 14, 17 (NOT SHOWN) ALSO CONNECT TO V
FREQUENCY (kHz)
40
GAIN
(dB)
–30
–10
10
104
1562 TA07b
–50
–70
–40
–20
0
–60
–80
–90
56
72
88
48
112
64
80
96
120
fCENTER = 80kHz
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