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Butterworth Fourth-order switched capacitor low pass filter TLC04

Filter circuit shown in Figure. selected American TI produced by Butterworth fourth-order switched-capacitor low- pass filter TLC04 as filter circuit the main component of the with Schmitt trigger oscillator from time to time dual power supply . TLC04 the cutoff frequency the stability of is only with the clock frequency stability related , cutoff frequency clock adjustable , the clock a cut-off frequency of ratio of 50:1 , so the design cutoff frequency of 1/1.69 × RF1 × CF1 × 50 = 251.8Hz, meet VSR and vibration welding process the requirements .

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Butterworth Fourth-order switched capacitor low pass filter TLC04