I need some help with my circuit. 2 sine waves are generated with 2 AD9833's, then are amplifier and filtered with 2 1st order low pass filters, and then connected to the AD633. As the sine wave have about 200 mV offset, I'm using 2 coupling capacitors, but there's still some offset. I must use the "Optional Offset Trim Configuration" on both inputs (X2 and Y2).This configuration only uses resitors. Should i use a voltage divider and a buffer for each input?
Is there any problem if I use a dc-dc converter (LT1054 inverter) to get -Vcc?
PS : Sorry for my english
[edited by: inigoatm at 1:03 PM (GMT -4) on 5 Sep 2020]