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五阶、低通、开关电容滤波器

尺寸最小的低功耗5阶滤波器

产品详情

主要特征

应用/用途

Parametric specs for Active Filters
Filter Type Lowpass
Filter Sections 1
Order Per Filter Section 5
Highest Cutoff (kHz) (min) 15
Lowest Cutoff (Hz) (max) 1
Filter Class Switched Cap
Filter Characteristic Butterworth
Program Method Clock
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins UMAX/8
Budgetary
Price (See Notes)
$2.47 @1k
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简化框图

技术文档

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参量

Parametric specs for Active Filters
Filter Type Lowpass
Filter Sections 1
Order Per Filter Section 5
Highest Cutoff (kHz) (min) 15
Lowest Cutoff (Hz) (max) 1
Filter Class Switched Cap
Filter Characteristic Butterworth
Program Method Clock
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins UMAX/8
Budgetary
Price (See Notes)
$2.47 @1k

主要特征

  • 5th-Order Lowpass Filters
    • Bessel Response (MAX7409/MAX7413)
    • Butterworth Response (MAX7410/MAX7414)
  • Clock-Tunable Corner Frequency (1Hz to 15kHz)
  • Single-Supply Operation
    • +5V (MAX7409/MAX7410)
    • +3V (MAX7413/MAX7414)
  • Low Power
    • 1.2mA (operating mode)
    • 0.2µA (shutdown mode)
  • Available in 8-Pin µMAX®/DIP Packages
  • Low Output Offset: ±4mV
  • Single 5th-order, Bessel and Butterworth switched-capacitor filters. 15kHz maximum F (c)

应用/用途

  • ADC抗混叠
  • 气囊电子装置
  • CT2基站
  • DAC后置滤波
  • 语音处理

描述

The MAX7409/MAX7410/MAX7413/MAX7414 5th-order, lowpass, switched-capacitor filters (SCFs) operate from a single +5V (MAX7409/MAX7410) or +3V (MAX7413/ MAX7414) supply. These devices draw only 1.2mA of supply current and allow corner frequencies from 1Hz to 15kHz, making them ideal for low-power post-DAC filtering and anti-aliasing applications. They feature a shutdown mode, which reduces the supply current to 0.2µA.

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

The MAX7409/MAX7413 Bessel filters provide low overshoot and fast settling, while the MAX7410/MAX7414 Butterworth filters provide a maximally flat passband response. Their fixed response simplifies the design task to selecting a clock frequency.

简化框图

MAX7409、MAX7410、MAX7413、MAX7414:典型工作电路 MAX7409、MAX7410、MAX7413、MAX7414:典型工作电路 Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索解决技术问题所需的答案。

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Maxim专业的应用工程师团队也可以为您解答技术问题,请 访问Maxim的 支持中心