I am new in circuit design. In my recent design, I put a cascade of two AD825X before ADC to amplify the input analog signal. I found in the datasheet that the AD825X input bias current must have a return path to its local analog ground, I wonder if I should provide a return current path in the first amplifier if the analog signal comes a strain sensor (full-bridge), and provide another one between these two AD825X?
Thanks a lot.
Hi,Can you send your schematic I want to check how you laid out your schematic to see if you maybe already have a return path for the bias current.Best Regards,
Here is the schematic of one of the input channels. Thanks a lot if you could check it for me.