Tool/software: TI C/C++ Compiler
Hi Sir,
The red mark mentioned in the specification can output the same waveforms simultaneously.
But my application is output different waveform simultaneously, can you teach me how to setting registers?
Regards,
Roger
Hi Paul,
Thank you for your quick reply.
Below is my setting, but there is no output waveform. Please help me check my setting and schematic if any problem.
CLK=25MHz
Hi Roger,
I suspect two problems:
1. You might be violating the TCSS limit in the timing figure:
2. What are you using for the VREF voltage? I see that you have it connected in a similar format as the four-quadrant example circuit, but I do not see a reference input. Am I missing something?
Hi Paul,
1. Current tCSS timing is setting 0ns base on Figure 1. I will change tCSS timing from 0ns to 5ns, ok?
2. Regarding the schematic, we are based on DAC8811 as attached file. I cannot found any mistake...
Do you mean that VREFA and VREFB of DAC8812 must provide voltage?
Regards,
Roger
Hi Roger,
As Paul mentioned, you are missing reference voltages to DAC8812 in schematics.
if you look at the reference schematics, you can see reference input voltage connector.
