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Maxim产品 - MAX293介绍

MAX293 - 八阶、低通、椭圆函数、开关电容滤波器

MAX293是Maxim美信半导体公司的一款滤波器(连续模式和开关电容)产品，MAX293是八阶、低通、椭圆函数、开关电容滤波器，本站介绍了MAX293的封装应用图解、特点和优点、功能等，并给出了与MAX293相关的Maxim元器件型号供参考。

MAX293 - 八阶、低通、椭圆函数、开关电容滤波器 - 滤波器(连续模式和开关电容) - 低功耗应用请参考MAX7400/MAX7403/MAX7404/MAX7407 - 美信半导体

产品概述

The MAX293/MAX294/MAX297 are easy-to-use, 8th-order, lowpass, elliptic, switched-capacitor filters that can be set up with corner frequencies from 0.1Hz to 25kHz (MAX293/MAX294) or from 0.1Hz to 50kHz (MAX297).

The MAX293/MAX297's 1.5 transition ratio provides sharp rolloff and -80dB of stopband rejection. The MAX294's 1.2 transition ratio provides the steepest rolloff and -58dB of stopband rejection. All three filters have fixed responses, so the design task is limited to selecting the clock frequency that controls the filter's corner frequency.

An external capacitor is used to generate a clock using the internal oscillator, or an external clock signal can be used. An uncommitted op amp (noninverting input grounded) is provided for building a continuous-time lowpass filter for post-filtering or anti-aliasing. Steep rolloff and high order make these filters ideal for anti-aliasing applications that require maximum bandwidth, and for communication applications that require filtering signals in close proximity within the frequency domain.

The MAX293/MAX294/MAX297 are available in 8-pin DIP and 16-pin wide SO packages, delivering aggressive performance from a tiny area.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • 8th-Order Lowpass Elliptic Filters
  • Clock-Tunable Corner-Frequency Range:
  • 0.1Hz to 25kHz (MAX293/MAX294)
  • 0.1Hz to 50kHz (MAX297)
  • No External Resistors or Capacitors Required
  • Internal or External Clock
  • Clock to Corner Frequency Ratio
  • 100:1 (MAX293/MAX294)
  • 50:1 (MAX297)
  • Operate with a Single +5V Supply or Dual ±5V Supplies
  • Uncommitted Op Amp for Anti-Aliasing or Clock-Noise Filtering
  • 8-Pin DIP and 16-Pin Wide SO Packages
    • 热门应用
  • 抗混叠
  • DAC后置滤波
  • 数据采集系统
  • 语音/数据信号滤波
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