JPH0255741U - - Google Patents
Info
- Publication number
- JPH0255741U JPH0255741U JP13397988U JP13397988U JPH0255741U JP H0255741 U JPH0255741 U JP H0255741U JP 13397988 U JP13397988 U JP 13397988U JP 13397988 U JP13397988 U JP 13397988U JP H0255741 U JPH0255741 U JP H0255741U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- comparator
- input
- conversion circuit
- converter circuit
- 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
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 1
Landscapes
- Analogue/Digital Conversion (AREA)
Description
第１図はこの考案の構成を示す図である。第２
図〜第４図はこの考案の実施例であるＡ―Ｄ変換
回路を備えた半導体集積回路の構成およびその応
用例を示す図である。第５図は従来の比較型Ａ―
Ｄ変換回路を備えた半導体集積回路の回路図であ
る。
１……コンパレータ、２……Ｄ―Ａ変換回路、
３……カウンタ、４……スイツチ、５……ＡＮＤ
ゲート、Ｐ１，Ｐ２……外部端子。
FIG. 1 is a diagram showing the configuration of this invention. Second
4 to 4 are diagrams showing the configuration of a semiconductor integrated circuit equipped with an A/D conversion circuit, which is an embodiment of this invention, and an example of its application. Figure 5 shows the conventional comparative type A-
1 is a circuit diagram of a semiconductor integrated circuit including a D conversion circuit. 1... Comparator, 2... D-A conversion circuit,
3...Counter, 4...Switch, 5...AND
Gate, P1, P2...external terminals.
Claims (1)
電圧と外部からの入力電圧との大小比較を行うコ
ンパレータ、およびＤ―Ａ変換回路に対する入力
データを順次更新するデータ更新回路からなるＡ
―Ｄ変換回路を備えた装置において、 コンパレータの基準電圧入力を外部端子に直接
接続するとともにＤ―Ａ変換回路の出力とコンパ
レータの基準電圧入力間にスイツチを設けたこと
を特徴とするＡ―Ｄ変換回路を備えた半導体集積
回路。[Claims for Utility Model Registration] A D-A converter circuit, a comparator that compares the output voltage of the D-A converter circuit with an external input voltage, and input data to the D-A converter circuit that is sequentially updated. A consists of a data update circuit that
-A device equipped with a D-to-A conversion circuit, characterized in that the reference voltage input of the comparator is directly connected to an external terminal, and a switch is provided between the output of the D-A conversion circuit and the reference voltage input of the comparator. A semiconductor integrated circuit equipped with a conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13397988U JPH0543547Y2 (en) | 1988-10-13 | 1988-10-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13397988U JPH0543547Y2 (en) | 1988-10-13 | 1988-10-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0255741U true JPH0255741U (en) | 1990-04-23 |
| JPH0543547Y2 JPH0543547Y2 (en) | 1993-11-02 |
Family
ID=31392341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13397988U Expired - Lifetime JPH0543547Y2 (en) | 1988-10-13 | 1988-10-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0543547Y2 (en) |
-
1988
- 1988-10-13 JP JP13397988U patent/JPH0543547Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0543547Y2 (en) | 1993-11-02 |