KR960036339A

KR960036339A - Parallel / Sequential Mixed Analog / Digital Conversion Circuit

Info

Publication number: KR960036339A
Application number: KR1019950007572A
Authority: KR
Inventors: 김형태; 선우진영
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1995-03-31
Filing date: 1995-03-31
Publication date: 1996-10-28

Abstract

본 발명은 아날로그전압을 디지탈데이타로 변화하는 아날로그/디지탈변환회로(보통 “A/D변환회로”라고 함.)에 관한 것으로, 특히 아날로그전압을 디지탈데이타로 고속으로 변환할 수 있을 뿐만아니라, 저렴하게 구현할 수 있도록하는 병렬/축차 혼합형 아날로그/디지탈 변환회로에 관한 것이다. 본 발명의 기술적인 구성은 출력데이타를 검출하여 이 검출상태에 따라서 샘플/홀드회로부와 기준전압 설정부를 제어하는 제어부; 상기 제어부의 제어에 따라 기준전압이 설정되는 기준전압절환부; 상기 기준 전압설정부에서 설정된 기준전압을 분배하는 기준저항체인부; 다음단인 비교회로부에서 입력전압을 비교처리하는 동안에 입력된 전압을 저장하는 샘플/홀드회로부; 상기 기준저항체인부에서 분배되는 기준전압과 상기 샘플/홀드회로부에서 출력되는 입력전압을 비교하여 입력전압이 기준전압이상일 경우에 출력이 발생되는 비교회로부; 상기 비교회로부의 출력이 검출되는 경우에 액티브동작상태로 되어 다음단으로 데이타를 전송하는 인코드부; 상기 인코드부에서 출력되는 데이타를 받아서 필요한 기기로 데이타를 전송하는 래치부를 구비함에 의한다.The present invention relates to an analog / digital conversion circuit (commonly referred to as an “A / D conversion circuit”) that converts an analog voltage into digital data. In particular, the present invention can not only convert analog voltage to digital data at high speed but also inexpensively. The present invention relates to a parallel / sequential mixed analog / digital conversion circuit that can be easily implemented. The technical configuration of the present invention includes a control unit for detecting output data and controlling the sample / hold circuit unit and the reference voltage setting unit according to the detection state; A reference voltage switching unit for setting a reference voltage under control of the controller; A reference resistor chain unit for distributing the reference voltage set by the reference voltage setting unit; A sample / hold circuit section for storing the input voltage during the comparison process of the input voltage in the next comparison circuit section; A comparison circuit unit for generating an output when the input voltage is higher than the reference voltage by comparing the reference voltage distributed by the reference resistor chain unit with the input voltage output from the sample / hold circuit unit; An encoding unit which, when an output of the comparison circuit unit is detected, enters an active operation state and transfers data to the next stage; And a latch unit for receiving data output from the encoder and transmitting the data to a necessary device.

Description

Parallel / Sequential Mixed Analog / Digital Conversion Circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제3도는 본 발명에 따른 아날로그/디지탈 변환회로도, 제4도는 제2도에 도시된 기준전압절환부(11)의 구체회로도이다.FIG. 3 is an analog / digital conversion circuit diagram according to the present invention, and FIG. 4 is a specific circuit diagram of the reference voltage switching unit 11 shown in FIG.

Claims

An analog / digital (A / D) conversion circuit, comprising: a control unit for detecting output data and controlling a sample / hold circuit unit and a reference voltage setting unit according to the detection state; A reference voltage switching unit for setting a reference voltage under control of the controller; A reference resistor chain unit for distributing the reference voltage set by the reference voltage setting unit; A sample / hold circuit section for storing the input voltage during the comparison process of the input voltage in the next comparison circuit section; A comparison circuit unit for generating an output when the input voltage is greater than or equal to the reference voltage by comparing the reference voltage distributed by the reference resistor chain unit with the input voltage output from the sample / hold circuit unit; An encoding unit which, when an output of the comparison circuit unit is detected, enters an active operation state and transfers data to the next stage; And a latch unit configured to receive the data output from the encoder and transmit the data to a required device.

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