Search International and National Patent Collections
|1. (WO2018099304) SYSTEM AND METHOD FOR REGULATING TRANSFER CHARACTERISTICS OF INTEGRAL DIGITAL-TO-ANALOG CONVERTER|
|Applicants:||SHANGHAI IC R & D CENTER CO., LTD.
CHENGDU IMAGE DESIGN TECHNOLOGY CO. LTD.
|Title:||SYSTEM AND METHOD FOR REGULATING TRANSFER CHARACTERISTICS OF INTEGRAL DIGITAL-TO-ANALOG CONVERTER|
Disclosed are a system and method for regulating transfer characteristics of an integral analog-to-digital converter (ADC). The system is provided with a cascaded N-level integrator structure constituted by N integrators, an output end of each integrator is connected to an input end of the integrator adjacent thereto, the input end of the first integrator is connected to an input voltage, the output end of the N-th integrator is connected to an output node (VRAMP), where N is a positive integer greater than or equal to 2; and in the cascaded N-level integrators, changes in the voltage of the output node (VRAMP) are directly proportional to the N-th power of time. The present invention utilizes cascaded multilevel integrators of a simple implementation scheme, facilitates subsequent digital signal processing, reduces the conversion time of the ADC, and increases the conversion rate of the ADC; compared with an existing polyline approach, the present invention is of an improved linearity and is easy to expand to cascaded multilevel integrators.