STM32F7 ADC Sampling Calculation

[voyvoda .]

Hello,

I'm using ADC with DMA of STM32F7 MCU. I want to calculate the ADC Sampling Rate. Is there a formula that I can use ?

With 12Bit resolution, Is it possible to reach 2.4MSPS ?

I'm using CubeMX for code generation.

[Tomas DRESLER]

The ADCCLK is derived from APB bus by prescaler /2, ... The conversion takes n bits + sample time as a simple sum, calculated in ADCCLKs. The resolution can be reduced from 12 to 10, 8 and 6 bits, reducing conversion time. Sampling time needs to be adjusted according to the source impedance (see datasheet).

Simple example is in RM, chapter 15.5.

[AvaTar]

The Reference Manual used to give a nice timing diagram in the ADC section, and the available timing values in the respective config register description.

The datasheet gives max. timing limits.

I don't mess with Cube, not sure what you can make there ...