Hi,I want to control the output with I2C.The pin settings are as follows:LDAC = Low, CLR = High, POR = Low, VDD = 5VAfter writing 0x01 to the 0x38(internal reference on) register, Ref Voltage(2.5V) is output.However, 4V is output from VoutA,B,C,D.(Gradually rise from 1.8 V)Only the reference voltage has been set.Even if the output voltage value is set to the 0x1F command, 4V is still output.What could be the problem?
Thank you for answer.
Operate the reset register and then operate it normally.
Can you share your schematic please? also please do indicate the supply voltages used. Can you also show all components connected to the Vout pin?
What is the setting of the power-down register?