Tool/software: Code Composer Studio
The application environment is shown as the figure. Two decoupling capacitors, i.e., 0.1uF and 1uF ceramic chip capacitors are connected to Pin 1. VDD=3.3V(3.29V by the multimeter), VREF=2.5V(2.49V by the multimeter). When several numbers of VCO are transmitted to the DAC8501, the results are given as follows.
1 VCO=0, VOUT=0(No data are transmitted to the DAC8501)
2 VCO= 0x2710; VOUT=3.28V(By the multimeter).
3 VCO= 0x851E; VOUT=3.28V(By the multimeter).
4 VCO= 0x1046a; VOUT=0V(By the multimeter).
So, are there any problems with the DAC8501 device?