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The circuit diagram of 8 order low-pass filter (MAX291,TA750

2017-02-18 10:46  
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The circuit diagram of 8 order low-pass filter (MAX291,TA7504P)
8 order low-pass filter circuit is shown in the figure. This circuit is 8 order low-pass filter circuit adopting switched-capacitor. Changing the clock frequency can change the cutoff frequency and the cutoff frequency is 1/100 of the clock frequency. +5V voltage square wave signal is put on the input terminal of the clock and then between input (IN) and output (OUT) terminal of A1 would get the performance of low-pass filter. Because of the input attenuator and the output amplifier, the input and output signal voltage can be ±10V.