4results about How to "Improve comparison accuracy" patented technology

The invention provides a production detection process of transparent ceramic emulsion, which is applied to the field of suspension liquid, and comprises the following steps: transferring preliminarily prepared ceramic emulsion into a particle detection tank, and detecting particles in the particle detection tank by using a built-in scraper fineness meter in the particle detection tank at the same horizontal height position; primary sampling detection after mixing and secondary sampling detection after standing are sequentially carried out, when the reading difference of the two times of sampling is within an allowable difference value range, particles in the ceramic emulsion are dispersed uniformly and suspended stably, and when the reading difference exceeds the allowable difference value range, the particles in the emulsion have an obvious precipitation phenomenon in the standing process. The ceramic emulsion is non-uniform and unstable in dispersion, is not suitable for being put into use, and needs to be processed again, so that the functional benefits generated when the ceramic emulsion is put into use are effectively improved.

The application provides a comparator and a decision feedback equalization circuit. The comparator comprises: a first input circuit provided with two pairs of tubes, the two pairs of tubes are different in type, the two pairs of tubes are used for receiving a first input signal and a first reference signal, and are further used for generating a first differential signal according to the first input signal and the first reference signal in a sampling stage, and a first positive feedback circuit is used for accelerating the difference between the first differential signal; a second input circuit provided with two pairs of tubes, the two pairs of tubes are different in type, the two pairs of tubes are used for receiving a second input signal and a second reference signal, and are further used for generating a second differential signal according to the second input signal and the second reference signal in a sampling stage, a second positive feedback circuit is used for accelerating the difference between the second differential signal, and an output circuit is used for amplifying and latching the voltage signals of the output end of the first input circuit and the output end of the second input circuit in a regeneration stage, and outputting a comparison result.

The invention relates to the technical field of analog integrated circuit design, and discloses a dynamic comparator which comprises a pre-amplification module and a latch module. The pre-amplification module comprises a differential input unit, a current unit and a reset unit; the differential input unit comprises a PMOS input unit and an NMOS input unit; the PMOS input unit is used for accessing a first input signal, amplifying the first input signal through two branches in the PMOS input unit, and outputting a first P tube amplified signal and a second P tube amplified signal; the NMOS input unit is used for accessing a second input signal, respectively amplifying the second input signal through two branches in the NMOS input unit, and outputting a first N tube amplified signal and a second N tube amplified signal; the first input signal and the second input signal are differential signals; the latch module is of a double-tail dynamic latch structure and comprises a first P tube signal input end, a second P tube signal input end, a first N tube signal input end and a second N tube signal input end.

The application discloses a self-oscillation comparator and method for successive approximation analog-to-digital converter, and belongs to the field of analog and mixed signal integrated circuit design. The application comprises a differential input stage, a self-oscillation core, an isolation and clock control unit, an oscillation detection module, a counting decision module and an output interface module. The application converts the input differential voltage into the difference of the number of times of flipping of two oscillation nodes within a fixed time window, and counts the difference by the oscillation detection module and the counting decision module to output the comparison result. The application realizes the orderly switching of the sampling, isolation, comparison and reset stages by the multiphase clock control, effectively reduces the random noise and input kickback interference, improves the decision robustness of the comparator under the condition of low power voltage and small input difference, and can be widely applied in low-power medium-speed SAR ADC, sensor interface and mixed signal system chip.