Multi-precision anti-radiation logic control device for SAR-type ADC

Abstract

The invention discloses a multi-precision anti-radiation logic control device for an SAR-type ADC, which comprises an input register, a sampling counter, an inner clock generator, a capacitor controlswitch, an intermediate result register, a register conversion module and a control logic module, wherein the input register is used for writing external configuration and generating control signals for internal configuration; the sampling counter generates stage control signals and format control signals; the inner clock generator generates effective internal clock signals in a conversion stage;the capacitor control switch generates sampling / holding control switch signals for a capacitance array; the intermediate result register is used for storing an AD conversion result; the register conversion module parallelly stores the AD conversion result, and final serial output is completed; and the control logic module is used for realizing logic control on the above components to enable a sampling stage and an internal conversion state to perform time sharing processing. The device can be applied to an ADC circuit in multiple application environments and has the advantages of small area, low power consumption and strong extensibility.

Description

technical field [0001] The invention belongs to the technical field of ADC logic control; in particular, it relates to a multi-precision anti-irradiation logic control device for SAR ADC. Background technique [0002] In the past few decades, integrated circuits have developed rapidly at an astonishing speed, and the degree of digitization has continued to deepen, and the requirements for analog-to-digital conversion technology (ADC) in the system have also become higher and higher. The analog-to-digital converter not only needs to have a high sampling rate and quantization accuracy, but at the same time, as the power supply voltage continues to decrease, the chip area is getting smaller and smaller, and the ADC must also have a high conversion efficiency and low power consumption. The past high-speed ADC design was mainly based on the pipeline structure, and the disadvantages of large pipeline structure area and high power consumption are increasingly unable to meet the sys...

AI Technical Summary

Problems solved by technology

Most of the existing ADC logic control technologies are only for a specific product, have low compatibility, and do not have anti-radiation performance, which greatly limits the application environment of ADC chips

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