MAX7401, MAX7405 八阶、低通、贝塞尔、开关电

MAX7401, MAX7405 八阶、低通、贝塞尔、开关电容滤波器

MAX7401, MAX7405概述

The MAX7401/MAX7405 8th-order, lowpass, Bessel, switched-capacitor filters (SCFs) operate from a single +5V (MAX7401) or +3V (MAX7405) supply. These devices draw only 2mA of supply current and allow corner frequencies from 1Hz to 5kHz, making them ideal for low-power post-DAC filtering and anti-aliasing applications. They feature a shutdown mode that reduces 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 MAX7401/MAX7405 Bessel filters provide low overshoot and fast settling. Their fixed response simplifies the design task to selecting a clock frequency.

MAX7401, MAX7405关键特性

8th-Order, Lowpass Bessel Filters

Low Noise and Distortion: -82dB THD + Noise

Clock-Tunable Corner Frequency (1Hz to 5kHz)

100:1 Clock-to-Corner Ratio

Single-Supply Operation

• +5V (MAX7401)
• +3V (MAX7405)

Low Power

• 2mA (Operating Mode)
• 0.2µA (Shutdown Mode)

Available in 8-Pin SO/DIP Packages

Low Output Offset: ±5mV

MAX7401, MAX7405应用/使用

ADC抗混叠
	气囊电子装置
	CT2基站
	DAC后置滤波
	语音处理

MAX7401, MAX7405典型应用电路