STM32F3 SDADC fast configuration

[koprivecj]

Hello everyone!
I'm working on the project with an STM32F373 microprocessor. I'll use SDADC-s on it and I will multiple times change their configurations during measurement so that this should be as fast as possible. So my question is how long does it take for this kind of ADC from a stop, change configuration and restart to get an accurate result from it.
If anybody has that kind of experience I would appreciate your help.