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Maxim产品 - MAX7426介绍

MAX7426 - 五阶、低通、椭圆函数、开关电容滤波器

MAX7426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，MAX7426是五阶、低通、椭圆函数、开关电容滤波器，本站介绍了MAX7426的封装应用图解、特点和优点、功能等，并给出了与MAX7426相关的Maxim元器件型号供参考。

MAX7426 - 五阶、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) - 业内功耗最低、尺寸最小的5阶低通滤波器 - 美信半导体

产品概述

The MAX7426/MAX7427 5th-order, lowpass, elliptic, switched-capacitor filters (SCFs) operate from a single +5V (MAX7426) or +3V (MAX7427) supply. The devices draw only 0.8mA of supply current and allow corner frequencies from 1Hz to 12kHz, making them ideal for low-power post-DAC filtering and anti-aliasing applications. They can be put into a low-power mode, reducing supply current to 0.2µA.

Two clocking options are available: self-clocking (through the use of an external capacitor) or external clocking for tighter cutoff-frequency control. An offset-adjust pin allows for adjustment of the DC output level.

The MAX7426/MAX7427 deliver 37dB of stopband rejection and a sharp rolloff with a transition ratio of 1.25. Their fixed response limits the design task to selecting a clock frequency.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • 5th-Order, Elliptic Lowpass Filters
  • Low Noise and Distortion: -80dB THD + Noise
  • Clock-Tunable Corner Frequency (1Hz to 12kHz)
  • Single-Supply Operation
  • +5V (MAX7426)
  • +3V (MAX7427)
  • Low Power
  • 0.8mA (Operating Mode)
  • 0.2µA (Shutdown Mode)
  • Available in 8-Pin µMAX®/PDIP Packages
  • Low Output Offset: ±4mV
    • 热门应用
  • ADC抗混叠滤波器
  • DAC后置滤波语音处理
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