JPS63120423U - - Google Patents
Info
- Publication number
- JPS63120423U JPS63120423U JP1037587U JP1037587U JPS63120423U JP S63120423 U JPS63120423 U JP S63120423U JP 1037587 U JP1037587 U JP 1037587U JP 1037587 U JP1037587 U JP 1037587U JP S63120423 U JPS63120423 U JP S63120423U
- Authority
- JP
- Japan
- Prior art keywords
- offset
- converter
- reference level
- detecting
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Analogue/Digital Conversion (AREA)
Description
第１図は本考案にかかるＡ／Ｄコンバータのオ
フセツトキヤンセル回路を示すブロツク図、第２
図はオフセツト説明図である。
１０…Ａ／Ｄコンバータ、１２…切替スイツチ
、１４…ラツチ回路、１５…オフセツト調整回路
、１６…Ｄ／Ａコンバータ、１８…減算回路、２
０…コントローラ。
FIG. 1 is a block diagram showing an offset cancel circuit of an A/D converter according to the present invention, and FIG.
The figure is an offset explanatory diagram. 10... A/D converter, 12... Selector switch, 14... Latch circuit, 15... Offset adjustment circuit, 16... D/A converter, 18... Subtraction circuit, 2
0...Controller.
Claims (1)
させる基準レベル入力手段と、 前記基準レベルが入力されているときのＡ／Ｄ
コンバータの出力からオフセツトを検出するオフ
セツト検出手段と、 検出されたオフセツトに基づきアナログ信号の
Ａ／Ｄ変換時に、当該オフセツトに応じたレベル
だけアナログ信号より減算してＡ／Ｄ変換コンバ
ータの入力信号とするオフセツト調整手段とを備
えたことを特徴とするオフセツトキヤンセル回路
。[Claims for Utility Model Registration] Reference level input means for temporarily inputting a reference level into an A/D converter, and an A/D converter when the reference level is input.
an offset detection means for detecting an offset from the output of the converter; and an offset detection means for detecting an offset from the output of the converter; 1. An offset cancel circuit comprising an offset adjustment means for adjusting the offset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1037587U JPS63120423U (en) | 1987-01-27 | 1987-01-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1037587U JPS63120423U (en) | 1987-01-27 | 1987-01-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63120423U true JPS63120423U (en) | 1988-08-04 |
Family
ID=30796605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1037587U Pending JPS63120423U (en) | 1987-01-27 | 1987-01-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63120423U (en) |
-
1987
- 1987-01-27 JP JP1037587U patent/JPS63120423U/ja active Pending