TI中文支持网Part Number:OPA325
A Sallen Key low-pass filter designed with OPA325, with a cutoff frequency of 10KHZ. Designed with reference to TI's data sheet and related low-pass filter manuals. Software simulation is fine, but the actual hardware test gives a DC signal of 3.3V that is directly attenuated to about 0.7V. +5V power supply. And there is no DC bias
Taylor：
您好，
已经收到了您的案例，调查需要些时间，感谢您的耐心等待。
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feng lin：
我的输入在1.65±0.5V的范围，满足共模输入范围
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feng lin：
我的输入为1.65V±0.5V的范围，满足共模输入范围
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Links：
feng lin 说：actual hardware test gives a DC signal of 3.3V that is directly attenuated to about 0.7V. +5V power supply. And there is no DC bias
I'm confused. What are the DC voltages at IN, +IN+, and OUT?
