MAX7400 - 八阶、低通、椭圆函数、开关电容滤波器

MAX7400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，MAX7400是八阶、低通、椭圆函数、开关电容滤波器，本站介绍了MAX7400的封装应用图解、特点和优点、功能等，并给出了与MAX7400相关的Maxim元器件型号供参考。

MAX7400 - 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) - 尺寸最小的低功耗、8阶椭圆滤波器 - 美信半导体

产品概述

The MAX7400/MAX7403/MAX7404/MAX7407 8th-order, lowpass, elliptic, switched-capacitor filters (SCFs) operate from a single +5V (MAX7400/MAX7403) or +3V (MAX7404/MAX7407) supply. These devices draw 2mA of supply current and allow corner frequencies from 1Hz to 10kHz, making them ideal for low-power anti-aliasing and post-DAC filtering applications. They feature a shutdown mode that reduces the 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. In addition, an offset adjustment pin (OS) allows for the adjustment of the DC output level.

The MAX7400/MAX7404 provide 82dB of stopband rejection and a sharp rolloff with a transition ratio of 1.5. The MAX7403/MAX7407 provide a sharper rolloff with a transition ratio of 1.2, while still delivering 60dB of stopband rejection. The fixed response of these devices simplifies the design task to corner-frequency selection by setting a clock frequency. The MAX7400/MAX7403/MAX7404/MAX7407 are available in 8-pin SO and DIP packages.

关键特性

以下关键特性由Maxim美信半导体提供：

8th-Order Lowpass Elliptic Filter

Low Noise and Distortion -82dB THD + Noise (MAX7400)

Clock-Tunable Corner Frequency (1Hz to 10kHz)

100:1 Clock-to-Corner Ratio

Single-Supply Operation

+5V (MAX7400/MAX7403)

+3V (MAX7404/MAX7407)

Low Power

2mA (Operating Mode)

0.2µA (Shutdown Mode)

Available in 8-Pin SO and DIP Packages

Low Output Offset: ±5mV

热门应用

ADC抗混叠

气囊电子装置

CT2基站

DAC后置滤波

语音处理

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