Other Parts Discussed in Thread: OPA2822, OPA828, OPA2228
I have a design using DAC7822 working as a positive voltage output. Please find attached the schematic.
On the output for a "code 0" I have an offset of 200mV, see scope image below.
I need to have offset=0V for code 0,. Is there any way to to get it? What changes should I do to get it? Should I replace the output amplifier? What reference do toy recomenende me?
Power supplies (+5V_DAC and -5V_DAC) and reference voltage (-1V2) are clean and stables.
Thanks in advance,