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MAX7409：五阶、低通、开关电容滤波器

尺寸最小的低功耗5阶滤波器

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.

关键特性 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)

MAX7409、MAX7410、MAX7413、MAX7414：典型工作电路 应用 ADC抗混叠 气囊电子装置 CT2基站 DAC后置滤波 语音处理

数据手册DataSheet

关键参数

开发工具

• MAXFILTERBRD

技术资料

• Lowpass Filter Has Improved Step Response
• A Filter Primer

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