JPH0210639U - - Google Patents
Info
- Publication number
- JPH0210639U JPH0210639U JP8861988U JP8861988U JPH0210639U JP H0210639 U JPH0210639 U JP H0210639U JP 8861988 U JP8861988 U JP 8861988U JP 8861988 U JP8861988 U JP 8861988U JP H0210639 U JPH0210639 U JP H0210639U
- Authority
- JP
- Japan
- Prior art keywords
- converter
- digital
- analog signal
- signal
- current source
- 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
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
Landscapes
- Analogue/Digital Conversion (AREA)
Description
第１図は本考案に係るアナログデジタル変換器
に用いるＤＡ変換部の構成を示す図、第２図はＡ
Ｄ変換部とＤＡ変換部の接続を示す図、第３図は
アナログデジタル変換器の構成を示す図、第４図
は２つのＡＤ変換部の出力の関係を示す図、第５
図はＡＤ変換部２とＤＡ変換部３の従来の接続を
示す図である。
２，６……ＡＤ変換部、３，２３……ＤＡ変換
部、５……残差増幅器、２０〜２２……変換部分
、２０１〜２０３，２１１〜２１３，２２１〜２
２３……トランジスタ、２０４，２１４，２２４
……定電流源。
FIG. 1 is a diagram showing the configuration of the DA converter used in the analog-to-digital converter according to the present invention, and FIG.
FIG. 3 is a diagram showing the configuration of the analog-to-digital converter; FIG. 4 is a diagram showing the relationship between the outputs of the two AD converters; FIG.
The figure is a diagram showing a conventional connection between an AD converter 2 and a DA converter 3. 2, 6... AD conversion section, 3, 23... DA conversion section, 5... Residual amplifier, 20-22... Conversion section, 201-203, 211-213, 221-2
23...Transistor, 204, 214, 224
...constant current source.
Claims (1)
に変換し、この変換したデジタル信号をＤＡ変換
部で再びアナログ信号に変換して、このアナログ
信号と前記入力アナログ信号の差をデジタル信号
に変換し、これらのデジタル信号から前記入力ア
ナログ信号に対応するデジタル信号を求めるアナ
ログデジタル変換器において、 前記ＤＡ変換部として定電流源とこの定電流源
の出力電流を切り替える第１のスイツチ素子及び
このスイツチ素子に並列に接続され前記定電流源
の出力電流をバイパスする第２のスイツチ素子と
を有するＤＡ変換部を用いた事を特徴するアナロ
グデジタル変換器。[Claims for Utility Model Registration] An input analog signal is converted into a digital signal by an AD converter, this converted digital signal is again converted into an analog signal by a DA converter, and the difference between this analog signal and the input analog signal is In the analog-to-digital converter which converts into digital signals and obtains a digital signal corresponding to the input analog signal from these digital signals, the DA converter includes a constant current source and a first switch that switches the output current of the constant current source. An analog-to-digital converter comprising a DA converter including a switch element and a second switch element connected in parallel to the switch element to bypass the output current of the constant current source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8861988U JPH0210639U (en) | 1988-07-04 | 1988-07-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8861988U JPH0210639U (en) | 1988-07-04 | 1988-07-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0210639U true JPH0210639U (en) | 1990-01-23 |
Family
ID=31313179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8861988U Pending JPH0210639U (en) | 1988-07-04 | 1988-07-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0210639U (en) |
-
1988
- 1988-07-04 JP JP8861988U patent/JPH0210639U/ja active Pending