JPS56146326A - Digital-to-analog converter - Google Patents

Digital-to-analog converter

Info

Publication number
JPS56146326A
JPS56146326A JP5081880A JP5081880A JPS56146326A JP S56146326 A JPS56146326 A JP S56146326A JP 5081880 A JP5081880 A JP 5081880A JP 5081880 A JP5081880 A JP 5081880A JP S56146326 A JPS56146326 A JP S56146326A
Authority
JP
Japan
Prior art keywords
converter
circuit
order
bits
conversion
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
JP5081880A
Other languages
Japanese (ja)
Other versions
JPS636170B2 (en
Inventor
Tsutomu Ogishi
Toru Akiyama
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP5081880A priority Critical patent/JPS56146326A/en
Publication of JPS56146326A publication Critical patent/JPS56146326A/en
Publication of JPS636170B2 publication Critical patent/JPS636170B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/68—Digital/analogue converters with conversions of different sensitivity, i.e. one conversion relating to the more significant digital bits and another conversion to the less significant bits

Abstract

PURPOSE:To ensure a D/A conversion with a high accuracy, by securing a resistance dividing system for at least a high-order bit converter of a D/A converter which performs an analog conversion between the high-order and low-order bits. CONSTITUTION:The high-order M bits and low-order N-M bits of a digital signal of N bits are supplied to the 1st D/A converter 1 and the 2nd D/A converter 2, respectively. The converter 1 consists of a decoder 11, a voltage dividing circuit 12 and a switching circuit 13. The circuit 12 connects in series the equal resistances of 2M units and then connects the divided voltage output terminal to the circuit 13 from both ends of each resistance. The circuit 13 applies two potentials V1 and V2 corresponding to the M-bit input of the decoder 11 to the operational amplifiers 31 and 32 that function as a buffer circuit each. The converter 2 for the low-order N-M bits has the same structure as the converter 1. In such constitution, the D/A conversion output receives no effect if the resistance value of the circuit 12 has some shift. As a result, a high-accuracy D/A conversion is ensured.
JP5081880A 1980-04-16 1980-04-16 Digital-to-analog converter Granted JPS56146326A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5081880A JPS56146326A (en) 1980-04-16 1980-04-16 Digital-to-analog converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5081880A JPS56146326A (en) 1980-04-16 1980-04-16 Digital-to-analog converter

Publications (2)

Publication Number Publication Date
JPS56146326A true JPS56146326A (en) 1981-11-13
JPS636170B2 JPS636170B2 (en) 1988-02-08

Family

ID=12869335

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5081880A Granted JPS56146326A (en) 1980-04-16 1980-04-16 Digital-to-analog converter

Country Status (1)

Country Link
JP (1) JPS56146326A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5944125A (en) * 1982-09-07 1984-03-12 Toshiba Corp Digital-analog converter
JPH0197020A (en) * 1987-10-09 1989-04-14 Internatl Business Mach Corp <Ibm> Resolution power expanding device for analog -to-digital converter
JPH01133424A (en) * 1987-11-19 1989-05-25 Sanyo Electric Co Ltd Da converting circuit
JPH09292864A (en) * 1996-12-27 1997-11-11 Asahi Glass Co Ltd Digital/analog converter
JPH1026961A (en) * 1997-03-10 1998-01-27 Asahi Glass Co Ltd Image display device driving method
JP2002156952A (en) * 2000-09-05 2002-05-31 Sharp Corp Multi-format active matrix display
JP2006319393A (en) * 2005-05-10 2006-11-24 Renesas Technology Corp Semiconductor integrated circuit for communication, and wireless communication apparatus
US8830103B2 (en) 2012-02-27 2014-09-09 Fujitsu Semiconductor Limited D/A converter

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5944125A (en) * 1982-09-07 1984-03-12 Toshiba Corp Digital-analog converter
JPH0197020A (en) * 1987-10-09 1989-04-14 Internatl Business Mach Corp <Ibm> Resolution power expanding device for analog -to-digital converter
JPH0320933B2 (en) * 1987-10-09 1991-03-20 Intaanashonaru Bijinesu Mashiinzu Corp
JPH01133424A (en) * 1987-11-19 1989-05-25 Sanyo Electric Co Ltd Da converting circuit
JPH09292864A (en) * 1996-12-27 1997-11-11 Asahi Glass Co Ltd Digital/analog converter
JPH1026961A (en) * 1997-03-10 1998-01-27 Asahi Glass Co Ltd Image display device driving method
JP2002156952A (en) * 2000-09-05 2002-05-31 Sharp Corp Multi-format active matrix display
JP2006319393A (en) * 2005-05-10 2006-11-24 Renesas Technology Corp Semiconductor integrated circuit for communication, and wireless communication apparatus
US8830103B2 (en) 2012-02-27 2014-09-09 Fujitsu Semiconductor Limited D/A converter

Also Published As

Publication number Publication date
JPS636170B2 (en) 1988-02-08

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