JPS62201536U - - Google Patents
Info
- Publication number
- JPS62201536U JPS62201536U JP9080686U JP9080686U JPS62201536U JP S62201536 U JPS62201536 U JP S62201536U JP 9080686 U JP9080686 U JP 9080686U JP 9080686 U JP9080686 U JP 9080686U JP S62201536 U JPS62201536 U JP S62201536U
- Authority
- JP
- Japan
- Prior art keywords
- constant current
- converter
- current source
- circuit
- outputs
- 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
- 230000010354 integration Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
- Analogue/Digital Conversion (AREA)
- Control Of Amplification And Gain Control (AREA)
Description
第１図は本考案のＤ―Ａ変換器の構成を示す図
、第２図は同、各部の信号波形図、第３図は一般
的な積分型Ｄ―Ａ変換器の構成を示す図、第４図
、第５図は従来の音量調節機能を付加したＤ―Ａ
変換器の構成を示す図である。
１……Ｄ―Ａコンバータ、４……定電流源、５
……第１のスイツチ、６……積分回路、７……演
算増幅器、８……積分コンデンサ、９……第２の
スイツチ、１３……サンプリング／ホールド回路
、１８……Ｄ―Ａ変換用集積回路、１９……可変
抵抗器、１９ａ……可動端子、１９ｂ，１９ｃ…
…固定端子。
FIG. 1 is a diagram showing the configuration of the DA converter of the present invention, FIG. 2 is a signal waveform diagram of each part of the same, and FIG. 3 is a diagram showing the configuration of a general integral type DA converter. Figures 4 and 5 show D-A with a conventional volume control function.
FIG. 3 is a diagram showing the configuration of a converter. 1...D-A converter, 4...constant current source, 5
...First switch, 6... Integrating circuit, 7... Operational amplifier, 8... Integrating capacitor, 9... Second switch, 13... Sampling/hold circuit, 18... D-A conversion integration Circuit, 19... Variable resistor, 19a... Movable terminal, 19b, 19c...
...Fixed terminal.
Claims (1)
データに比例した時間幅の一定電流を出力するＤ
―Ａコンバータ１と、当該Ｄ―Ａコンバータ１の
出力を積分する積分回路６と、当該積分回路６の
出力を同期サンプリング／ホールドして、上記入
力データに比例したアナログ電圧を出力するサン
プリング／ホールド回路１３とからなるＤ―Ａ変
換器において、上記定電流源４からの一定電流を
分流して上記積分回路６に供給したことを特徴と
するＤ―Ａ変換器。 D that is equipped with a constant current source 4 and outputs a constant current with a time width proportional to input data from the constant current source 4.
- A converter 1, an integration circuit 6 that integrates the output of the D-A converter 1, and a sampling/hold that synchronously samples/holds the output of the integration circuit 6 and outputs an analog voltage proportional to the input data. A DA converter comprising a circuit 13, characterized in that a constant current from the constant current source 4 is shunted and supplied to the integrating circuit 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9080686U JPS62201536U (en) | 1986-06-13 | 1986-06-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9080686U JPS62201536U (en) | 1986-06-13 | 1986-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62201536U true JPS62201536U (en) | 1987-12-22 |
Family
ID=30951010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9080686U Pending JPS62201536U (en) | 1986-06-13 | 1986-06-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62201536U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6029048A (en) * | 1983-06-16 | 1985-02-14 | Mitsubishi Electric Corp | D/a converter |
-
1986
- 1986-06-13 JP JP9080686U patent/JPS62201536U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6029048A (en) * | 1983-06-16 | 1985-02-14 | Mitsubishi Electric Corp | D/a converter |