Why does ADC sample value change with sample frequency? | Cypress Semiconductor
Why does ADC sample value change with sample frequency?
I have a custom design which used CY8C4247LQI-BL483 for main control chip. I have two ADC input channel, one for battery voltage detect and another for current channel. When I set different sample frequency, for example 1MHz to 18MHz as user guide told me, I got different return value from the battery voltage detect channel, the faster sample frequency I set, the smaller value I got. But the current detect channel had no affection. What's the problem? How can I fix it?