The use of on-chip DACs in stm32g473cb

[licunxu]

STM32G473CB has 3 DAC channel outputs. 

a. Can these three DAC channels output a 100KHz triangle wave signal at the same time?

b. In addition to the triangular wave, can the output signal output an irregular 100KHz waveform?

thanks

[TDK]

Yes, they can be used independently with DMA to output arbitrary waveforms. A 100 kHz triangle wave is certainly doable. See the datasheet for exact DAC specs including slew rate and accuracy.

[MasterT]

I'd say 15 msps / 4096 = 3.6 kHz if triangular wave at full scale up-down.

For 1 msps dac it accordingly lower.

But dac can produce up to 7.5 MHz sinewave having properly design hardware filters 

[KDJEM.1]

Hello @licunxu and welcome to the community;

 

According to the reference manual and the datasheet, the STM32G4 supports up to 4 DAC interfaces and maximum two DAC output channels each.

Thank you.

Kaouthar