OPA2340手册给出供电电压是单电源最大5.5V。这种Single Supply供电,是否能用Dual Supplies的供电方式,提供正负2.5V双电源来使其正常工作,输出正负电压呢。此外,LM258这种单电源供电电压3-32V,使用单电源5V供电,在低压输出时是否信号会有很大干扰,不如用+15V供电效果好。
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Q: LM258这种单电源供电电压3-32V,使用单电源5V供电,在低压输出时是否信号会有很大干扰,不如用+15V供电效果好
A: 不会,在这个范围内供电都没问题。