US 12,294,382 B2
Single slope analogue to digital converter and operating method thereof
Hyeon Joon Kim, Samcheok-si (KR)
Assigned to KNU-INDUSTRY COOPERATION FOUNDATION, Chuncheon-si (KR)
Filed by KNU-Industry Cooperation Foundation, Chuncheon-si (KR)
Filed on Jan. 30, 2023, as Appl. No. 18/161,276.
Prior Publication US 2024/0259032 A1, Aug. 1, 2024
Int. Cl. H03M 1/56 (2006.01); H03M 1/12 (2006.01); H03M 1/06 (2006.01); H03M 1/08 (2006.01)
CPC H03M 1/56 (2013.01) [H03M 1/125 (2013.01); H03M 1/0675 (2013.01); H03M 1/0836 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method of operating a single slope analog-to-digital converter (ADC), the method comprising:
receiving an input signal from a sensor or a ramp signal from a ramp generator according to a state of a switch and sampling the received input or ramp signal;
determining, by a comparator, whether the sampled ramp signal is present in a predetermined input range in a state in which the ramp generator maintains an off state and outputting a determination result;
generating, by a logic part, a flag signal indicating a high or low according to the determination result by the comparator and providing the flag signal to the ramp generator; and
sampling, by the ramp generator, a reference voltage of the comparator according to the flag signal based on an off or on state.