Hello.
I used DAC80504 chip in our board, But I didn’t get the output.
Can you help me? Thanks.
One DAC80504 connected to a MCU. The input pins of DAC80504 chip, CS, SCLK and SDI signals are generated by general IO ports of MCU with program. After the program is started, only the instruction for setting DAC0 register is sent, and no other instructions are sent.
The oscilloscope captures the input signal waveforms as shown in Figure 1.
Yellow is CS,
blue is SCLK,
purple is SDI.
SDO pin outputs data waveform, and REF pin outputs voltage 2.54v, but DAC0 output is 0V.
The external connection of the chip is shown in Figure 2.