Abstract: This application provides a novel capacitive DAC structure, which at least includes a fully differential DAC capacitor array, a comparator, and a sampling and holding switch provided between the fully differential DAC capacitor array and the comparator. In this application, by providing the sampling and holding switch, including a first logic switch, a second logic switch and a third logic switch, between the fully differential DAC capacitor array and the comparator, and changing the timing relationship of the switches to generate a stable common mode level Vcm, the area and power consumption can be greatly reduced, the IP competitiveness can be effectively improved, and it can be used for high-performance ADC design.

Abstract: This application provides a novel capacitive DAC structure, which at least includes a fully differential DAC capacitor array, a comparator, and a sampling and holding switch provided between the fully differential DAC capacitor array and the comparator. In this application, by providing the sampling and holding switch, including a first logic switch, a second logic switch and a third logic switch, between the fully differential DAC capacitor array and the comparator, and changing the timing relationship of the switches to generate a stable common mode level Vcm, the area and power consumption can be greatly reduced, the IP competitiveness can be effectively improved, and it can be used for high-performance ADC design.

Abstract: Embodiments described herein relate to an LDO circuit device and overcurrent protection circuit of an LDO circuit. An overcurrent protection circuit is added to an LDO circuit to process an output current signal of the LDO circuit. When the output current signal of the LDO circuit increases, a voltage of a gate drive signal of a power switch in the LDO circuit is increased through adjustment performed by the overcurrent protection circuit, thereby declining the current capability of the power switch in the LDO circuit and restricting an output current thereof from continuing to increase. After feedback regulation, the output current of the LDO finally reaches to a stable value.

Abstract: Embodiments described herein relate to an LDO circuit device and overcurrent protection circuit of an LDO circuit. An overcurrent protection circuit is added to an LDO circuit to process an output current signal of the LDO circuit. When the output current signal of the LDO circuit increases, a voltage of a gate drive signal of a power switch in the LDO circuit is increased through adjustment performed by the overcurrent protection circuit, thereby declining the current capability of the power switch in the LDO circuit and restricting an output current thereof from continuing to increase. After feedback regulation, the output current of the LDO finally reaches to a stable value.