Analog-to-digital converter circuit and analog-to-digital conversion method

An analog-to-digital converter circuit comprising:

• a comparator with a first input for receiving an analog signal and with a second input for receiving a ramp signal,
• a first output of the comparator,
• a second output of the comparator,
• a first counter connected to the first output,
• a second counter connected to the second output,
• a first clock connected to the first counter, and
• a second clock connected to the second counter,
• wherein
• the first clock is configured to provide a first clock signal to the first counter,
• the second clock is configured to provide a second clock signal to the second counter,
• the first counter is configured to count with the frequency of the first clock signal,
• the second counter is configured to count with the frequency of the second clock signal, and
• the frequency of the first clock signal is lower than the frequency of the second clock signal
• the first output is configured to provide a first output signal that toggles once the ramp signal has reached the level of the analog signal at a stopping time, and
• the second counter is configured to be activated once the first clock signal has changed its state after the stopping time.