JPH0448727U - - Google Patents

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Publication number
JPH0448727U
JPH0448727U JP9102690U JP9102690U JPH0448727U JP H0448727 U JPH0448727 U JP H0448727U JP 9102690 U JP9102690 U JP 9102690U JP 9102690 U JP9102690 U JP 9102690U JP H0448727 U JPH0448727 U JP H0448727U
Authority
JP
Japan
Prior art keywords
sine wave
analog
oscillator
dividing resistor
voltage dividing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9102690U
Other languages
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP9102690U priority Critical patent/JPH0448727U/ja
Publication of JPH0448727U publication Critical patent/JPH0448727U/ja
Pending legal-status Critical Current

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  • Analogue/Digital Conversion (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの考案の一実施例によるA/Dコン
バータのブロツク図、第2図は外部からA/Dコ
ンバータに入力するアナログ信号波形図、第3図
はオシレータが出力する正弦波波形図、第4図は
エンコーダから出力するデジタル信号の図、第5
図はデジタル低域通過フイルタから出力するデジ
タル信号の図、第6図はアナログマルチプライヤ
から出力するアナログ信号波形図、第7図はアナ
ログ低域通過フイルタから出力するアナログ信号
波形図、第8図は従来のA/Dコンバータの一実
施例を示すブロツク図である。 図において、1はオシレータ、2は分圧抵抗、
3はコンパレータ、4はエンコーダ、5はデジタ
ル低域通過フイルタ、6はアナログマルチプライ
ヤ、7はアナログ低域通過フイルタ、8は基準電
圧源である。なお、図中同一符号は同一あるいは
相当部分を示す。
FIG. 1 is a block diagram of an A/D converter according to an embodiment of this invention, FIG. 2 is a waveform diagram of analog signals input to the A/D converter from the outside, and FIG. 3 is a diagram of the sine wave waveform output from the oscillator. Figure 4 is a diagram of the digital signal output from the encoder, Figure 5
The figure shows the digital signal output from the digital low-pass filter, Figure 6 shows the analog signal waveform output from the analog multiplier, Figure 7 shows the analog signal waveform output from the analog low-pass filter, and Figure 8 shows the analog signal waveform output from the analog low-pass filter. 1 is a block diagram showing one embodiment of a conventional A/D converter. In the figure, 1 is an oscillator, 2 is a voltage dividing resistor,
3 is a comparator, 4 is an encoder, 5 is a digital low-pass filter, 6 is an analog multiplier, 7 is an analog low-pass filter, and 8 is a reference voltage source. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 正弦波を出力するオシレータと、上記オシレー
タから出力した正弦波を所望の振幅まで減衰する
分圧抵抗と、外部から入力したアナログ信号と上
記分圧抵抗で減衰された正弦波の電圧を比較する
コンパレータと、上記コンパレータの比較結果を
2進化符号に変換するエンコーダと、上記エンコ
ーダのデジタル信号から不要な高調波成分を除去
するデジタル低域通過フイルタを備えたA/D(
Analog to Digital)コンバー
タ。
An oscillator that outputs a sine wave, a voltage dividing resistor that attenuates the sine wave output from the oscillator to a desired amplitude, and a comparator that compares the analog signal input from the outside with the voltage of the sine wave attenuated by the voltage dividing resistor. an A/D (
Analog to Digital) converter.
JP9102690U 1990-08-30 1990-08-30 Pending JPH0448727U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9102690U JPH0448727U (en) 1990-08-30 1990-08-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9102690U JPH0448727U (en) 1990-08-30 1990-08-30

Publications (1)

Publication Number Publication Date
JPH0448727U true JPH0448727U (en) 1992-04-24

Family

ID=31826279

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9102690U Pending JPH0448727U (en) 1990-08-30 1990-08-30

Country Status (1)

Country Link
JP (1) JPH0448727U (en)

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