In the A/D converter of the ML62Q1000 series, it is said that it is possible to select whether or not to discharge the sample hold capacitance with the SAINIT bit. What is the standard for using with or without discharge?
With no discharge, the charging and discharging of the sample hold capacitor inside the A/D converter is minimized, and the voltage fluctuation of the terminal becomes small, which is effective for A/D conversion of only one channel.
With discharge, the phenomenon that the result of the previous A/D conversion affects the next channel is eliminated, and the degree of influence becomes the same each time, so it is effective when performing A/D conversion for two or more channels.
However, even with the above settings, there is a concern that the A/D conversion results may be shifted due to fluctuations in the terminal voltage. In this case, it is necessary to take countermeasures such as extending the A/D sample hold time or reducing the frequency of A/D conversion.
Related Products: ML62Q12xx, ML62Q13xx, ML62Q14xx, ML62Q15xx/ML62Q18xx, ML62Q16xx, ML62Q17xx
