JPS58111194A - Semiconductor device - Google Patents

Semiconductor device

Info

Publication number
JPS58111194A
JPS58111194A JP56215655A JP21565581A JPS58111194A JP S58111194 A JPS58111194 A JP S58111194A JP 56215655 A JP56215655 A JP 56215655A JP 21565581 A JP21565581 A JP 21565581A JP S58111194 A JPS58111194 A JP S58111194A
Authority
JP
Japan
Prior art keywords
source
drain
transistor
electrode
drain electrode
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
Application number
JP56215655A
Other languages
Japanese (ja)
Other versions
JPS6152560B2 (en
Inventor
Kazuo Ogasawara
和夫 小笠原
Giichi Kato
義一 加藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56215655A priority Critical patent/JPS58111194A/en
Publication of JPS58111194A publication Critical patent/JPS58111194A/en
Publication of JPS6152560B2 publication Critical patent/JPS6152560B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11CSTATIC STORES
    • G11C27/00Electric analogue stores, e.g. for storing instantaneous values
    • G11C27/02Sample-and-hold arrangements
    • G11C27/024Sample-and-hold arrangements using a capacitive memory element

Landscapes

  • Electronic Switches (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To remove errors at holding time by connecting the gates of two MOSTs of which sources and drains are connected respectively to make an analog switch and driving the source and drain of one MOST out of said MOSTs at an opposite phase against the gate of the 3rd MOST. CONSTITUTION:The 1st MOST22 and the 2nd MOST21 of which source and drain electrodes are connected respectively are connected each other at their gate electrodes to constitute an analog switch. The source or drain electrode of the 3rd MOST4 is connected to the source and drain electrode of the 1st MOST22. The source and drain electrode 11 of the 2nd MOST21 is driven at an opposite phase against the gate electrode 2 of the 3rd MOST4. The drain or source electrode 1 of the 3rd MOST4 is used as an analog input terminal and the source and drain electrode of the 1st MOST 22 is used as a sample holding output terminal 3. Said configuration can obtain an analog switch to reduce errors at a holding time.

Description

【発明の詳細な説明】 本発明は半導体装置Eelするものであ如、特にMO8
アナログスイッチを用い九すンプルeホールド回路(以
下8/H回路と略す)K関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to semiconductor devices, particularly MO8
The present invention relates to a 9-sample e-hold circuit (hereinafter abbreviated as 8/H circuit) K using an analog switch.

辺部、デジタル技術の長足の進歩に伴ない、従来アナロ
グ量として情報処理されていた分野においてもアナpグ
・デジタル変換器を用いて、アナ藺グ量をデジタル量に
変換した徒、デジタル処理を行う傾向が強まっている。
With the rapid progress of digital technology, even in fields where information was conventionally processed as analog quantities, analog-to-digital converters are used to convert analog quantities into digital quantities, resulting in digital processing. There is a growing trend to do so.

このアナログ・デジタル変換器における変換方法として
は積分形、並列形、逐次近似形勢さまざまな方法が採用
されている。これらの方法を採用する基準としては要求
される変換精度、変換速度等から技術的に決定されるの
が一般的である。一般に、低速度、高精度に積分形、高
速度、低精度に並列形、中速度、中精度に逐次近似形が
用いられている。
Various conversion methods such as integral type, parallel type, and successive approximation type are employed in this analog-to-digital converter. The criteria for adopting these methods are generally determined technically based on the required conversion accuracy, conversion speed, etc. Generally, an integral type is used for low speed and high accuracy, a parallel type is used for high speed and low accuracy, and a successive approximation type is used for medium speed and medium accuracy.

アナpグ・デジタル変換口の精度における感度の高い回
路として8/H回路がある。例えば#I1図の如き回路
構成が考えられる。第1図においてアナログ入力端子l
からアナログ電圧が印加される。MOS)ランジスタ4
はアナログスイッチとして用いられ制御信号端子2が前
記MOSトランジスタ4のゲート電極に接続されており
、MOSトランジスタ4がN形のときは制御信号端子2
に正の電圧を印加すれば導通する。このとき、アナログ
入力端子1からアナログ電圧がホールド容量5に充放電
を行う。次に1制御信号端子2を負電圧を印加するとM
OSトランジスタ4は非導通となり、アナログ電圧はホ
ールド容量に保持され、8/H出力端子3から出力され
る。
There is an 8/H circuit as a circuit with high sensitivity in terms of accuracy of the analog/pg/digital conversion port. For example, a circuit configuration as shown in FIG. #I1 can be considered. In Figure 1, analog input terminal l
An analog voltage is applied from MOS) transistor 4
is used as an analog switch, and the control signal terminal 2 is connected to the gate electrode of the MOS transistor 4. When the MOS transistor 4 is N type, the control signal terminal 2 is connected to the gate electrode of the MOS transistor 4.
It becomes conductive if a positive voltage is applied to it. At this time, the analog voltage from the analog input terminal 1 charges and discharges the hold capacitor 5 . Next, when a negative voltage is applied to 1 control signal terminal 2, M
The OS transistor 4 becomes non-conductive, and the analog voltage is held in the hold capacitor and output from the 8/H output terminal 3.

第1図の如き回路はMOSトランジスタ4のゲート電極
とソース電極またはドレイン電極間に存在する浮遊容量
のため、制御信号が正から負Kf化するときに容量結合
の過渡雑音が生じる。
In the circuit shown in FIG. 1, due to the stray capacitance existing between the gate electrode and the source or drain electrode of the MOS transistor 4, transient noise due to capacitive coupling occurs when the control signal changes from positive to negative Kf.

この過渡雑音を補償するために82図の如き回路が提案
されていた。第2図において第1図と同じ個所は同じ番
号を用いている。第1図との相異点は補償用MOSトラ
ンジスター2の追加と前記トランジスタの電極を制御す
る補償信号端子lIKある。補償信号端子11は制御信
号端子2と逆相で駆動されるものである。この逆相信号
は、制御信号端子2に印加される信号をインバータによ
って反転すれば容易に実現できるものである。
In order to compensate for this transient noise, a circuit as shown in FIG. 82 has been proposed. In FIG. 2, the same parts as in FIG. 1 are designated by the same numbers. The difference from FIG. 1 is the addition of a compensation MOS transistor 2 and a compensation signal terminal lIK for controlling the electrode of the transistor. The compensation signal terminal 11 is driven in opposite phase to the control signal terminal 2. This reverse phase signal can be easily realized by inverting the signal applied to the control signal terminal 2 using an inverter.

絡2図は制御信号が正から負へと変化するときに第1図
と異なる動作をする。すなわち、制御信号が正から負へ
と変化するときに補償信号が負から正へと変化し、MO
S)?ンジスタ2の過渡雑音をMOSトランジスタ12
により補償するものである。
Circuit diagram 2 behaves differently from diagram 1 when the control signal changes from positive to negative. That is, when the control signal changes from positive to negative, the compensation signal changes from negative to positive, and the MO
S)? The transient noise of transistor 2 is transferred to MOS transistor 12.
This will be compensated by.

通常、補償用MO8)?ンジスタ12の寸法はアナログ
スイッチ用MOSトランジスタの約半分にすると補償さ
れることは知られている。この補償用MOSトランジス
タとアナログスイッチ用トランジスタの寸法比が製造工
程におけるバラツキで変動し九場合は補償が十分に行な
われず、サンプル・ホールド回路の誤差が生じ、アナロ
グ・デジタル変換器において精度の劣化が生じる轡の欠
点があった。
Normally, compensation MO8)? It is known that compensation can be achieved by making the size of the transistor 12 about half that of the analog switch MOS transistor. If the dimensional ratio between the compensation MOS transistor and the analog switch transistor fluctuates due to variations in the manufacturing process, compensation will not be sufficient, causing errors in the sample-and-hold circuit, and deteriorating accuracy in the analog-to-digital converter. There was a drawback to the resulting lining.

本発明はかか今欠点を教養し、製造工程におけるバラツ
キに対し十分な安定度を得るととKよシ、ホールド時の
誤差が小さいアナログ・スイッチを提供するものである
The present invention addresses these shortcomings and provides an analog switch with sufficient stability against variations in the manufacturing process and with a small error during hold.

本発明によればソース電極とドレイン電極を接続した第
1および第2のMOS)ランジスタを有し、前記第1お
よび第2゛のゲート電極を接続し、アナログスイッチを
構成する第1および第2のMOS)ランジスタと#1は
同じ寸法の第3のMOSトランジスタのソースまたはド
レイン電極に第1のMOSトランジスタのソースおよび
ドレイン電極を接続し、第2のMOS)ランジスタのソ
ースおよびドレイン電極を、第3のMOS)ランジスタ
のゲート電極と逆相で駆動する牛導体装置が得られる。
According to the present invention, the first and second MOS transistors have a source electrode and a drain electrode connected to each other, and the first and second MOS transistors have a source electrode and a drain electrode connected to each other, and the first and second MOS transistors have a source electrode and a drain electrode connected to each other, and the first and second MOS transistors are connected to each other, and the first and second MOS transistors are connected to each other, and the first and second MOS transistors are connected to each other, and the first and second MOS transistors are connected to each other, and the first and second MOS transistors are connected to each other, and the first and second MOS transistors are connected to each other. #1 connects the source and drain electrodes of the first MOS transistor to the source or drain electrode of the third MOS transistor of the same size, and connects the source and drain electrodes of the second MOS transistor #1 to the source or drain electrode of the third MOS transistor of the same size. A conductor device is obtained which is driven in the opposite phase to the gate electrode of the transistor (MOS) transistor (No. 3).

以下に本発明の実施例を図面を用いて詳細に説明する。Embodiments of the present invention will be described in detail below with reference to the drawings.

W、3図は本発明の詳細な説明図である。第3図におい
て第1図および第2図と同じ個所には同じ番号を用いて
いる。
Figure W, 3 is a detailed explanatory diagram of the present invention. In FIG. 3, the same numbers are used for the same parts as in FIGS. 1 and 2.

#I3図は第2図におけるMOB)ランジスタ12を、
互のゲート電極が接続されたMOSトランジスタ21お
よび22KII換され要点にある。この構成とすること
でMOS)ランジスタ4とほぼ則じ寸法のMOS)?ン
ジスタ21および22を使用することができる。MOS
)ランジスタ21および22は直列接続されているため
、等倹約にMOS)ランジスタ4の約半分の寸法となっ
ている。
#I3 figure shows MOB) transistor 12 in figure 2,
The main point is that MOS transistors 21 and 22KII, whose gate electrodes are connected to each other, are replaced. With this configuration, the MOS transistor 4 has almost the same dimensions as the MOS transistor 4. registers 21 and 22 can be used. M.O.S.
) The transistors 21 and 22 are connected in series, so that they are approximately half the size of the equi-frugal MOS transistor 4.

このため製造工程のバラツキはMOS )ランジスタ4
,21および22が近接して配置されていれt−jli
iJじ変動を受けることにな9.#造工程のバラツキに
対し十分な安定度が得られることは明らかであろう。
Therefore, variations in the manufacturing process are caused by MOS) transistor 4
, 21 and 22 are arranged close to each other.
9. It will be subject to the same fluctuations. It is clear that sufficient stability can be obtained against variations in the manufacturing process.

なお本実施例はN形MO8)9ンジスタを用いて説明し
であるがP形MO8)ランジスタを使用するときは制御
信号および補償信号の極性を逆に用いることで実現でき
ることは容易に推定できるものであり、MOS )ラン
ジスタのN形およびP形ともに本発明は実施できる亀の
である。
Although this example is explained using an N-type MO8) transistor, it can be easily estimated that when using a P-type MO8) transistor, it can be realized by reversing the polarity of the control signal and compensation signal. The present invention can be implemented with both N-type and P-type MOS transistors.

以上図面を用いて詳細に説明した如く、本発明を用いれ
ばホールド時の過渡雑音による誤差のない、製造工程の
バラツキに対し十分安定な牛導体装置が容易に実現可能
である。
As described above in detail with reference to the drawings, by using the present invention, it is possible to easily realize a conductor device that is free from errors due to transient noise during holding and is sufficiently stable against variations in the manufacturing process.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図および第2図は従来用いられてい友アナログスイ
ッチを用いた8/H回路の説明図、第3図は本発明の詳
細な説明図をそれぞれ示す◎l・・・・・・アナログ入
力端子、2・・・・・・制御信号端子、3・°°−°−
8/H出力端子、4,12t21t22°゛・・・・M
OS)ランジスタ、5−・・・・・・ホールド容量、1
1・・・・・・補償信号端子。 第1図 第2閉
Figures 1 and 2 are explanatory diagrams of an 8/H circuit using conventional analog switches, and Figure 3 is a detailed explanatory diagram of the present invention. ◎l...Analog input Terminal, 2... Control signal terminal, 3・°°−°−
8/H output terminal, 4, 12t21t22°゛...M
OS) Transistor, 5-...Hold capacitance, 1
1...Compensation signal terminal. Figure 1 2nd close

Claims (1)

【特許請求の範囲】[Claims] ソース電極とドレイン電極をII統し要路1および第2
のM08トランジスタを有し、前記第1および第2のゲ
ート電極を接続し、アナログスイッチを構成する第1お
よび第2のMOS)ランジスタとt%e’j同じ寸法の
第3のMOS)?ンジスタのソースまたはドレイン電極
に第1のMOS)ランジスタのソースおよびドレイン電
極を接続し、第2のMOS)ランジスタのソースおよび
ドレイン電極を、第3のMOS)ffンジスタのゲート
電極と逆相÷駆動することを特徴とする半導体装置。
The source electrode and the drain electrode are integrated into main paths 1 and 2.
The first and second MOS transistors have M08 transistors, connect the first and second gate electrodes, and constitute an analog switch. The source and drain electrodes of the first MOS transistor are connected to the source or drain electrodes of the transistor, and the source and drain electrodes of the second MOS transistor are driven in reverse phase with the gate electrode of the third MOS transistor. A semiconductor device characterized by:
JP56215655A 1981-12-24 1981-12-24 Semiconductor device Granted JPS58111194A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56215655A JPS58111194A (en) 1981-12-24 1981-12-24 Semiconductor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56215655A JPS58111194A (en) 1981-12-24 1981-12-24 Semiconductor device

Publications (2)

Publication Number Publication Date
JPS58111194A true JPS58111194A (en) 1983-07-02
JPS6152560B2 JPS6152560B2 (en) 1986-11-13

Family

ID=16675984

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56215655A Granted JPS58111194A (en) 1981-12-24 1981-12-24 Semiconductor device

Country Status (1)

Country Link
JP (1) JPS58111194A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4904061A (en) * 1984-10-22 1990-02-27 Seiko Epson Corporation Projection-type liquid crystal display device with even color
US5191450A (en) * 1987-04-14 1993-03-02 Seiko Epson Corporation Projection-type color display device having a driving circuit for producing a mirror-like image

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4904061A (en) * 1984-10-22 1990-02-27 Seiko Epson Corporation Projection-type liquid crystal display device with even color
US5191450A (en) * 1987-04-14 1993-03-02 Seiko Epson Corporation Projection-type color display device having a driving circuit for producing a mirror-like image

Also Published As

Publication number Publication date
JPS6152560B2 (en) 1986-11-13

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