J
John Smith
I made a simple amplifier with a CMOS OPAMP (AD8656 or AD8616). The
distortion is very low with AC/DC power (LM317), 0.0005%. However, if I use
batteries, the distortion goes up to 0.0025%. Adding a power filtering cap
does not make a difference. If I use a bipolar OPAMP (AD8397), then no
difference between AC/DC and battery. Why CMOS does not like battery? Any
idea?
distortion is very low with AC/DC power (LM317), 0.0005%. However, if I use
batteries, the distortion goes up to 0.0025%. Adding a power filtering cap
does not make a difference. If I use a bipolar OPAMP (AD8397), then no
difference between AC/DC and battery. Why CMOS does not like battery? Any
idea?