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参数资料
| 型号： | MAX262BEWG+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 26/26页 |
| 文件大小： | 0K |
| 描述： | IC FILTER ACT MPU PROG 24-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 30 |
| 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： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 管件 |
MAX260/MAX261/MAX262
Microprocessor Programmable
Universal Active Filters
_______________________________________________________________________________________
9
Step 2—Generate Programming
Coefficients
Starting with the f0 and Q values obtained in Step 1, use
the program “MPP” to generate the digital coefficients
that program each second-order section's f0 and Q. The
program displays values for “N” (“N = _ for f0” and “N =
_ for Q”). N is the decimal equivalent of the binary code
that sets the filter section’s f0 or Q. These are the same
“N”s that are listed in Tables 2 and 3.
An input clock frequency and filter mode must also be
selected in this step; however, if a specific-clock rate is
not selected, “GEN” picks one. With regard to mode
selection, mode 1 is the most convenient choice for
most bandpass and lowpass filters. Exceptions are
elliptic bandpass and lowpass filters, which require
mode 3. Highpass filters also use mode 3, while allpass
filters use mode 4. For further information regarding
these filter modes, see the Filter Operating Modes sec-
tion.
Step 3—Loading the Filter
When the N values for the f0 and Q of each second-
order filter section are determined, the filter can then be
programmed and operated. What follows is a con-
venient method of programming the filter and evalu-
ating a design if a PC is available.
A short BASIC program loads data into the MAX260/
MAX261/MAX262 through the PC's parallel printer port.
The program asks for the filter mode, as well as the N
values for the f0 and Q of each section. These coeffi-
cients are then loaded into the filter in the form of ASCII
characters. This program can be used with or without
Maxim's other filter design software. The program and
the appropriate hardware connections for a Centronics-
type printer port are shown in Figure 2.
Filter Design Software
Maxim provides software programs to help speed the
transition from frequency response design require-
ments to working hardware. A series of programs are
available, including:
Program PZ. Given the requirements, such as center
frequency, Q, passband ripple, and stopband attenua-
tion, PZ calculates the pole frequencies, Q's, zeros,
and the number of stages needed.
Program MPP. For programmed filters, MPP computes
the input codes to use and describes the expected
performance of the design.
Program FR. When a design of one or more stages is
completed, FR checks the final cascaded assembly.
The output frequency response can be compared with
that expected from PZ.
Program PR.BAS Allows a MAX260/MAX261/MAX262
to be programmed through a personal computer. The
mode, f0, and Q of each section are typed in, and the
proper codes are sent to the filter through the comput-
er’s parallel printer port. This program is also provided
in Figure 2.
Other design programs are also included for use with
other Maxim filter products.
Other Filter Products
Maxim has developed a number of other filter products
in addition to the MAX260, MAX261, and MAX262.
PIN-PROGRAMMABLE ACTIVE FILTERS—A dual sec-
ond-order universal filter that needs no external compo-
nents. A microprocessor interface is not required.
MAX263 0.4Hz to 30kHz f0 range
MAX264 1Hz to 75kHz f0 range
RESISTOR AND PIN-PROGRAMMABLE FILTERS—A
dual second-order universal filter where f0 adjustment
beyond pin-programmable resolution employs external
resistors.
MAX265 0.4Hz to 30kHz f0 range. Includes two
uncommitted op amps.
MAX266 1Hz to 75kHz f0 range. Includes two un-
committed op amps.
MF10
Industry Standard, Resistor Programmed Only
PIN-PROGRAMMABLE BANDPASS FILTERS—A
dual second-order bandpass that needs no external
components. A microprocessor interface is not
required.
MAX267 0.4Hz to 30kHz f0 range
MAX268 1Hz to 75kHz f0 range
PROGRAMMABLE ANTI-ALIAS FILTER—A program-
mable dual second-order continuous (not switched)
lowpass filter. No clock noise is generated. Designed
for use as an anti-alias filter in front of, or as a smooth-
ing filter following, any sampled filter or system.
MAX270 1kHz to 25kHz Cutoff Frequency Range
5th-ORDER LOW PASS FILTER—Features zero offset
and drift errors for designs requiring high DC accuracy.
MAX280, LT1062
0.1Hz to 20kHz Cutoff Frequency
Range
相关PDF资料 |
PDF描述 |
|---|---|
| MAX264BEWI+ | IC FILTER BANDPASS PROG 28-SOIC |
| MAX266BEWI+ | IC FILTER ACT PROG 28-SOIC |
| S9S08SG16E1CTJR | IC MCU 8BIT 16KB FLASH 16TSSOP |
| MAX271EWG+ | IC FILTER LOWPASS PROG 24-SOIC |
| S9S08SG16E1CTJ | MCU 16K FLASH 20-TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX262BEWG+ | 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 |
| MAX262BEWG+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 |
| MAX262BEWG-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 |
| MAX262BMRG | 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 |
| MAX2630EUS | 制造商:Maxim Integrated Products 功能描述:VHF-TO-MICROWAVE +3V GERNERAL-PUR - Rail/Tube |
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