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参数资料
| 型号： | MAX262BCNG+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 18/26页 |
| 文件大小： | 0K |
| 描述： | IC FILTER ACT MPU PROG 24-DIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 15 |
| 滤波器类型： | 通用开关电容器 |
| 频率 - 截止或中心： | 140kHz |
| 滤波器数： | 2 |
| 滤波器阶数： | 2nd |
| 电源电压： | 4.74 V ~ 12.6 V，±2.37 V ~ 6.3 V |
| 安装类型： | 通孔 |
| 封装/外壳： | 24-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 24-PDIP |
| 包装： | 管件 |
MAX260/MAX261/MAX262
Microprocessor Programmable
Universal Active Filters
______________________________________________________________________________________
25
Fourth-Order Butterworth Lowpass
Figure 26 shows a fourth-order Butterworth lowpass
with a cutoff frequency of 3kHz. Sections A and B of a
MAX260 are cascaded. The f0 and Q parameters for
each section are:
f0A = 3kHz
f0B = 3kHz
QA = 1.307
QB = 0.541
Mode 1 and a 400kHz clock are used. Because of low
Q values, the sampling errors of Figure 20 begin to look
significant in this case. From the graphs, using fCLK/f0
ratio near 133, f0A is about 4% high, f0B is 1.5% high,
QA is -1.2% low, and QB is -0.5% low. If these errors
are not a problem, the corrections can be ignored.
They are included here for best possible accuracy:
CLKA = CLKB = 400kHz
fCLK/f0A = 135.08 (N = 22), f0B = 2961Hz
(-1.3% correction)
fCLK/f0B = 139.80 (N = 25), f0A = 2861Hz
(-4.6% correction)
QA = 1.306 (N = 79, Q resolution prevents +0.5%
correction)
QB = 0.547 (N = 11 +1.1% correction)
Measured wideband noise for this filter is 123V RMS.
If mode 2 were used, the noise would be 87V RMS.
For lower noise with either mode, the first section
should have the highest Q (section A in this example).
51
11
12
23
21
MAX260
VIN
INA
BPA
CLKA
CLK
PROGRAM
CLKB
INB
BPB
WR, AX, DX
VOUT
10
-70
100
1K
500
200
10K
5K
2K
-50
FREQUENCY (Hz)
GAIN
(dB)
-30
-10
-180
180
90
PHASE
(DEGREES)
0
-90
GAIN
PHASE
Figure 24. Wide Passband Chebyshev Bandpass Filter
CLKA,B MODEA MODEB
fOA
fOB
QA
QB
120kHz
1
2
N = 56 N = 5 N = 96
N = 83
51
11
12
23
21
MAX262
VIN
INA
BPA
CLKA
CLK
PROGRAM
CLKB
INB
BPB
WR, AX, DX
VOUT
0
-50
1K
10K
5K
2K
100K
50K
20K
-40
-30
FREQUENCY (Hz)
GAIN
(dB)
-20
-10
fO = 15.6kHz
fCLK = 1MHz
fO = 31.3kHz
fCLK = 2MHz
fO = 47kHz
fCLK = 3MHz
Figure 25. High-Frequency Chebyshev Bandpass Filter
CLKA,B
MODE
fOA
fOB
QA
QB
1 to 3MHz
1
N = 38
N = 0
N = 96
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX262BCNG+ | 功能描述:有源滤波器 MPU Programmable Universal RoHS:否 制造商:Maxim Integrated 通道数量:1 截止频率:150 KHz 电源电压-最大:11 V 电源电压-最小:4.74 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP N 封装:Tube |
| MAX262BCWG | 功能描述:有源滤波器 RoHS:否 制造商:Maxim Integrated 通道数量:1 截止频率:150 KHz 电源电压-最大:11 V 电源电压-最小:4.74 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP N 封装:Tube |
| MAX262BCWG+ | 功能描述:有源滤波器 MPU Programmable Universal RoHS:否 制造商:Maxim Integrated 通道数量:1 截止频率:150 KHz 电源电压-最大:11 V 电源电压-最小:4.74 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP N 封装:Tube |
| MAX262BCWG+T | 功能描述:有源滤波器 MPU Programmable Universal RoHS:否 制造商:Maxim Integrated 通道数量:1 截止频率:150 KHz 电源电压-最大:11 V 电源电压-最小:4.74 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP N 封装:Tube |
| MAX262BCWG-T | 功能描述:有源滤波器 RoHS:否 制造商:Maxim Integrated 通道数量:1 截止频率:150 KHz 电源电压-最大:11 V 电源电压-最小:4.74 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:PDIP N 封装:Tube |
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