项目要求给精密运放双电源电压供电,电压范围如上,接入板子的电源是±10V,转成±5V;
另外再请教一下如何根据运放的数据手册挑选符合要求电源芯片,谢谢。
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HI
直接用10V转±5V, 用降压芯片加耦合电感的方式即可,具体看你的电流多大,例如TPS62150: https://www.ti.com.cn/cn/lit/an/slva616/slva616.pdf
如果电流小,就用TPS62170.
如果要求输出电压纹波noise尽量小,可以在输出增加一级LC.