Hi guys !
I'm using serial analog multiplexer 8:1 LTC1391 and adc LTC1285 like in picture.
I've have noticed that if more analog signals are connected to analog multiplexer LTC1391 I read different values e.g.
I measure 1 analog signal and I read 1,245 V, but when I connect another analog signal to multiplexer I read on same channel 1,352 V instead of 1,245 V.
Anyone had similar issue?
Design is taken form datasheet.
Could you suggest me something similar (schematics)?
Thank you !