JPH01133400U - - Google Patents
Info
- Publication number
- JPH01133400U JPH01133400U JP2990688U JP2990688U JPH01133400U JP H01133400 U JPH01133400 U JP H01133400U JP 2990688 U JP2990688 U JP 2990688U JP 2990688 U JP2990688 U JP 2990688U JP H01133400 U JPH01133400 U JP H01133400U
- Authority
- JP
- Japan
- Prior art keywords
- auxiliary
- analog switch
- voltage
- output
- amplifier
- 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
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Picture Signal Circuits (AREA)
- Analogue/Digital Conversion (AREA)
- Amplifiers (AREA)
Description
第１図はこの考案の一実施例を示すサンプルホ
ールド回路の構成図、第２図は従来のサンプルホ
ールド回路の構成図、第３図はサンプルホールド
回路の動作を示す信号波形図である。
図中、１はドライブアンプ、２はアナログスイ
ツチ、３は出力バツフアアンプ、４はホールドコ
ンデンサ、５は補助アンプ、６は補助アナログス
イツチ、７は補助コンデンサである。なお、図中
、同一あるいは相当部分には、同一符号を付して
示してある。
FIG. 1 is a block diagram of a sample and hold circuit showing an embodiment of this invention, FIG. 2 is a block diagram of a conventional sample and hold circuit, and FIG. 3 is a signal waveform diagram showing the operation of the sample and hold circuit. In the figure, 1 is a drive amplifier, 2 is an analog switch, 3 is an output buffer amplifier, 4 is a hold capacitor, 5 is an auxiliary amplifier, 6 is an auxiliary analog switch, and 7 is an auxiliary capacitor. In the drawings, the same or corresponding parts are designated by the same reference numerals.
Claims (1)
リング信号により開閉制御されるアナログスイツ
チと、アナログスイツチの出力電圧をホールドす
るホールドコンデンサと、ホールドコンデンサの
電圧を出力する出力バツフアアンプと、入力電圧
とホールドコンデンサの電圧の差を演算する補助
アンプと、補助アンプ出力をサンプリング信号に
より開閉制御する補助アナログスイツチと、補助
アナログスイツチの出力をホールドする補助コン
デンサとで構成したことを特徴とするサンプルホ
ールド回路。 A drive amplifier that amplifies the input signal, an analog switch whose opening/closing is controlled by a sampling signal, a hold capacitor that holds the output voltage of the analog switch, an output buffer amplifier that outputs the voltage of the hold capacitor, and the input voltage and the voltage of the hold capacitor. A sample hold circuit characterized in that it is constructed of an auxiliary amplifier that calculates the difference between , an auxiliary analog switch that controls opening and closing of the auxiliary amplifier output using a sampling signal, and an auxiliary capacitor that holds the output of the auxiliary analog switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2990688U JPH01133400U (en) | 1988-03-07 | 1988-03-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2990688U JPH01133400U (en) | 1988-03-07 | 1988-03-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01133400U true JPH01133400U (en) | 1989-09-11 |
Family
ID=31254520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2990688U Pending JPH01133400U (en) | 1988-03-07 | 1988-03-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01133400U (en) |
-
1988
- 1988-03-07 JP JP2990688U patent/JPH01133400U/ja active Pending