KR950022157A

KR950022157A - Dual Integral Analog-to-Digital Converter

Info

Publication number: KR950022157A
Application number: KR1019930031609A
Authority: KR
Inventors: 안종호; 이병철
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1993-12-30
Filing date: 1993-12-30
Publication date: 1995-07-28

Abstract

본 발명은 이중적분형 아날로그-디지탈 변화기에 관한 것으로, 적분제어신호에 따라 상기 아날로그 입력신호를 연결하는 제1스위치와 특정제어신호에 따라 기준전압을 연결하는 제2스위치와 자동제로신호에 따라 기준접지를 연결하는 제3스위치와 스위칭된 입력들을 적분하는 적분기와적분기의 츨력을 비교기준전압과 비교하는 비교기와 비교기의 출력을 입력하고, 적분제어신호, 측정제어신호, 자동제로신호, 잡음시간제어신호 및 클럭을 발생하는 타이밍 제어부와 적분제어신호와 자동제로신호와 잡음시간제어신호에 따라 비교기준전압을 발생하는 비교기준전압을 발생하는 비교기준전압발생기와 비교기의 출력과 측정제어신호를 입력하여 클럭에 따라 카운트하는 카운터를 구비하여 정밀하게 아날로그신호를 디지탈신호로 변환한다.The present invention relates to a dual-integral analog-to-digital changer, the first switch connecting the analog input signal according to the integral control signal and the second switch connecting the reference voltage according to the specific control signal and the reference ground according to the automatic zero signal. Input the outputs of the comparator and comparator to compare the output of the integrator and the integrator and the output of the integrator to integrate the third switch to connect the switch and the integrated control signal, measurement control signal, automatic zero signal, noise time control signal And clock output by inputting the output of the reference voltage generator and the comparator and the measurement control signal to generate the reference voltage for generating the reference voltage according to the timing controller for generating the clock, the integral control signal, the automatic zero signal, and the noise time control signal. A counter is counted accordingly, and the analog signal is precisely converted into a digital signal.

Description

Dual Integral Analog-to-Digital Converter

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제3도는 본 발명에 의한 이중적분형 아날로그-디지탈 변화기를 도시한 회로도이고,3 is a circuit diagram showing a dual-integral analog-to-digital converter according to the present invention,

제4도는 제3도의 장치에 의한 신호파형 및 타이밍을 도시한 것이다.4 shows signal waveforms and timing by the apparatus of FIG.

Claims

A first switch for connecting an analog input signal according to an integral control signal, a second switch for connecting a reference voltage according to a measurement control signal, a third switch for connecting a reference ground according to an automatic zero signal, and the control signals In the dual-integrated analog-to-digital converter having a timing controller, an integrator for integrating the switched inputs, a comparator for comparing the output of the integrator with a comparison reference voltage, and a counter for counting the output of the comparator, The timing controller inputs an output of the comparator to determine a sign of the reference voltage and generates a noise time control signal for switching the comparison reference voltage, and the comparator controls the automatic zero signal, the integral zero signal, and the integral control. Input a predetermined voltage as a comparison reference voltage according to the signal, and compare the reference according to the noise control signal Dual-component annal log characterized in that the input pressure into the ground-noise-removing circuit of the digital converter.

A dual-integrated analog-to-digital converter for converting an analog input signal into a digital signal, comprising: a first switch connecting the analog input signal according to an integral control signal; A second switch connecting a reference voltage according to a measurement control signal; a third switch connecting a reference ground according to an automatic zero signal; An integrator that integrates the switched inputs; A comparator for comparing the output of the integrator with a reference voltage; A timing controller configured to input an output of the comparator and generate the integral control signal, the measurement control signal, the automatic zero signal, a noise time control signal, and a clock; A comparison reference voltage generator configured to generate the comparison reference voltage according to the integration control signal, the automatic zero signal, and the noise time control signal; And a counter for inputting an output of the comparator and the measurement control signal and counting the counter according to the clock.

According to claim 2, The comparison reference voltage generator is a fourth switch for connecting a predetermined voltage to the comparator according to the automatic zero signal and the integral control signal, and ground connected to the comparator according to the noise time control signal Dual-integrated analog-to-digital converter characterized in that it comprises a fifth switch.

※ Note: The disclosure is based on the initial application.