JPS62186534U - - Google Patents
Info
- Publication number
- JPS62186534U JPS62186534U JP7489986U JP7489986U JPS62186534U JP S62186534 U JPS62186534 U JP S62186534U JP 7489986 U JP7489986 U JP 7489986U JP 7489986 U JP7489986 U JP 7489986U JP S62186534 U JPS62186534 U JP S62186534U
- Authority
- JP
- Japan
- Prior art keywords
- converter
- analog
- signal
- amplifier
- output
- 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.)
- Granted
Links
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000000295 complement effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案に係る高速アナログ／デジタル
変換回路の一実施例を示した図、第２図は本考案
の要部の１つであるＤＡ変換器の具体的構成例を
示した図、第３図は第１図各部の信号のタイムチ
ヤート、第４図は従来の高速アナログ／デジタル
変換回路の一例を示した図である。
１……Ｔ・Ｈ増幅器、２……第１のＡＤ変換器
、５……ＤＡ変換器、７……電流源、８……第２
のＡＤ変換器、９……増幅器。
FIG. 1 is a diagram showing an embodiment of a high-speed analog/digital conversion circuit according to the present invention, and FIG. 2 is a diagram showing a specific configuration example of a DA converter, which is one of the main parts of the present invention. FIG. 3 is a time chart of signals at various parts in FIG. 1, and FIG. 4 is a diagram showing an example of a conventional high-speed analog/digital conversion circuit. 1... T/H amplifier, 2... First AD converter, 5... DA converter, 7... Current source, 8... Second
AD converter, 9...amplifier.
Claims (1)
号をトラツク・ホールドするＴ・Ｈ増幅器と、こ
のＴ・Ｈ増幅器の出力をデジタル信号へ変換する
第１のＡＤ変換器と、この第１のＡＤ変換器の出
力をアナログ信号に変換するＤＡ変換器と、この
ＤＡ変換器の出力とＴ・Ｈ増幅器の出力との差分
を取出す手段と、この手段の出力をデジタル信号
に変換する第２のＡＤ変換器とからなるアナログ
／デジタル変換回路において、 前記差分を取出す手段として、非反転形の増幅
器を用い、 前記ＤＡ変換器として、導入したデジタル信号
を相補的関係にある２つのアナログ電流信号 ｉｏ，ｏへ変換出力する構成のＤＡ変換器を
用い、 このＤＡ変換器の一方のアナログ電流信号を直
接前記非反転形の増幅器に加え、ＤＡ変換器の他
方のアナログ電流信号を前記Ｔ・Ｈ増幅器の出力
部に加えるようにしたことを特徴とする高速アナ
ログ／デジタル変換回路。 (2) 前記ＤＡ変換器の２つのアナログ電流信号
の加算値ＩＡと等しい値であつて、この２つのア
ナログ電流信号を供給する電流源を前記Ｔ・Ｈ増
幅器の出力部へ接続するようにしたことを特徴と
する実用新案登録請求の範囲第１項記載の高速ア
ナログ／デジタル変換回路。[Claims for Utility Model Registration] (1) A T/H amplifier to which an analog signal to be converted is added and tracks and holds this signal, and a first AD conversion that converts the output of this T/H amplifier into a digital signal. a DA converter for converting the output of the first AD converter into an analog signal; a means for extracting the difference between the output of the DA converter and the output of the T/H amplifier; In an analog/digital conversion circuit consisting of a second AD converter that converts into a signal, a non-inverting amplifier is used as a means for extracting the difference, and the DA converter converts the introduced digital signals into a complementary relationship. Using a DA converter configured to convert and output two analog current signals io and o, one analog current signal of this DA converter is directly applied to the non-inverting amplifier, and the other analog current of the DA converter is A high-speed analog/digital conversion circuit characterized in that a signal is applied to an output section of the T/H amplifier. (2) A current source having a value equal to the sum value IA of the two analog current signals of the DA converter and supplying these two analog current signals is connected to the output section of the T/H amplifier. 1. A high-speed analog/digital conversion circuit according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986074899U JPH0753314Y2 (en) | 1986-05-19 | 1986-05-19 | High-speed analog / digital conversion circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986074899U JPH0753314Y2 (en) | 1986-05-19 | 1986-05-19 | High-speed analog / digital conversion circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62186534U true JPS62186534U (en) | 1987-11-27 |
| JPH0753314Y2 JPH0753314Y2 (en) | 1995-12-06 |
Family
ID=30920545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986074899U Expired - Lifetime JPH0753314Y2 (en) | 1986-05-19 | 1986-05-19 | High-speed analog / digital conversion circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0753314Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59160320A (en) * | 1983-03-02 | 1984-09-11 | Hitachi Ltd | Comparator with current output |
| JPS6028320A (en) * | 1983-07-27 | 1985-02-13 | Hitachi Ltd | Comparator circuit |
-
1986
- 1986-05-19 JP JP1986074899U patent/JPH0753314Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59160320A (en) * | 1983-03-02 | 1984-09-11 | Hitachi Ltd | Comparator with current output |
| JPS6028320A (en) * | 1983-07-27 | 1985-02-13 | Hitachi Ltd | Comparator circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0753314Y2 (en) | 1995-12-06 |
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