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使用TLV27L1 建立20-500Hz帶通濾波器 ,請問值是否正確

Other Parts Discussed in Thread: TLV27L1

目前使用+15v GND供電,測試時輸入電壓為0.1v

1.目前挑了幾個頻率測試,請問這樣的圖是否正確

2.我測試兩顆相同的ic,且都在600Hz,但濾波的效果不同,請問是正常的嗎?若否,請問可能是有那裡有問題?

filter-design-report-9 (1).pdf