JPS61197732U - - Google Patents

Info

Publication number
JPS61197732U
JPS61197732U JP8151285U JP8151285U JPS61197732U JP S61197732 U JPS61197732 U JP S61197732U JP 8151285 U JP8151285 U JP 8151285U JP 8151285 U JP8151285 U JP 8151285U JP S61197732 U JPS61197732 U JP S61197732U
Authority
JP
Japan
Prior art keywords
circuit
current
input signal
digital input
transistor group
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
Application number
JP8151285U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP8151285U priority Critical patent/JPS61197732U/ja
Publication of JPS61197732U publication Critical patent/JPS61197732U/ja
Pending legal-status Critical Current

Links

Description

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

第１図は本考案による一実施例を示す回路図、
第２図及び第３図は本考案による他の実施例を示
す要部回路図、第４図は従来のＤＡ変換回路図で
ある。 Ｂ１〜Ｂ９：デジタル入力信号、Ｉｏｕｔ／
ｏｕｔ：出力端子、Ｑ１〜Ｑ１０，Ｑ５１：トラ
ンジスタ、１，２：カレントミラ回路、Ｒ，２Ｒ
：抵抗。 FIG. 1 is a circuit diagram showing an embodiment of the present invention;
2 and 3 are main circuit diagrams showing other embodiments of the present invention, and FIG. 4 is a conventional DA conversion circuit diagram. B1 to B9 : Digital input signal, I out /
out : output terminal, Q1 to Q10 , Q51 : transistor, 1, 2: current mirror circuit, R, 2R
:resistance.

Claims (1)

【実用新案登録請求の範囲】 ２進符号化された多数ビツトのデジタル入力信
号をアナログ信号に変換する回路において、 少なくとも上位ビツト及び下位ビツトの２群に
分割され、夫々のコレクタにデジタル入力信号が
与えられるトランジスタ群と、 上記下位トランジスタ群のベース電流を動作電
流として上位トランジスタ群の出力電流を補償す
るためのカレントミラ回路とを備えてなることを
特徴とするデジタル―アナログ変換回路。[Claims for Utility Model Registration] In a circuit that converts a binary-encoded multi-bit digital input signal into an analog signal, the circuit is divided into at least two groups, upper bits and lower bits, and the digital input signal is sent to each collector. What is claimed is: 1. A digital-to-analog conversion circuit comprising: a given group of transistors; and a current mirror circuit for compensating the output current of the upper transistor group using the base current of the lower transistor group as an operating current.
JP8151285U 1985-05-29 1985-05-29 Pending JPS61197732U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8151285U JPS61197732U (en) 1985-05-29 1985-05-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8151285U JPS61197732U (en) 1985-05-29 1985-05-29

Publications (1)

Publication Number Publication Date
JPS61197732U true JPS61197732U (en) 1986-12-10

Family

ID=30628363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8151285U Pending JPS61197732U (en) 1985-05-29 1985-05-29

Country Status (1)

Country Link
JP (1) JPS61197732U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007037220A1 (en) * 2005-09-27 2007-04-05 Rohm Co., Ltd. D/a conversion circuit, organic el drive circuit, and organic el display device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51120160A (en) * 1975-03-21 1976-10-21 Analog Devices Inc Digitalltooanalog converter
JPS54157464A (en) * 1978-06-02 1979-12-12 Nippon Telegr & Teleph Corp <Ntt> Digital-analog converter
JPS58114623A (en) * 1981-12-24 1983-07-08 レイセオン　カンパニ− Digital-to-analog converter circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51120160A (en) * 1975-03-21 1976-10-21 Analog Devices Inc Digitalltooanalog converter
JPS54157464A (en) * 1978-06-02 1979-12-12 Nippon Telegr & Teleph Corp <Ntt> Digital-analog converter
JPS58114623A (en) * 1981-12-24 1983-07-08 レイセオン　カンパニ− Digital-to-analog converter circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007037220A1 (en) * 2005-09-27 2007-04-05 Rohm Co., Ltd. D/a conversion circuit, organic el drive circuit, and organic el display device

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