JPS5588424A - Digital-analog converter - Google Patents

Digital-analog converter

Info

Publication number
JPS5588424A
JPS5588424A JP16572678A JP16572678A JPS5588424A JP S5588424 A JPS5588424 A JP S5588424A JP 16572678 A JP16572678 A JP 16572678A JP 16572678 A JP16572678 A JP 16572678A JP S5588424 A JPS5588424 A JP S5588424A
Authority
JP
Japan
Prior art keywords
circuit
voltage
output
digital signal
operational 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
Application number
JP16572678A
Other languages
Japanese (ja)
Inventor
Mitsuharu Tsuchiya
Ryoichi Wada
Takanori Senoo
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP16572678A priority Critical patent/JPS5588424A/en
Publication of JPS5588424A publication Critical patent/JPS5588424A/en
Pending legal-status Critical Current

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  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE: To obtain a D/A converter featuring a high accuracy and low cost by using the normal digital signal driving circuit as the switch circuit.
CONSTITUTION: One end of each of several branch resistances forming ladder resistance network 1 is connected to binary coded weighting current generation circuit 1', and the other end is connected to the output end of digital signal driving circuit IC5 respectively. One of the input ends of operational amplifier 2 is set to voltage VCC, and the voltage level of circuit 1' is kept at VCC. And the current flows to the resistances froming network 1 only when the output of IC5 is switched toward the earth. Then one side of the input ends of operational amplifier 6 is set at the earth level, and the other end receives application of the output voltage of No.i inverter circuit 5-i of IC5. Then the output voltage of amplifier 6 is applied to the GND terminal of IC5, and thus the voltage drop caused by the internal resistance of circuit 5-i can be prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP16572678A 1978-12-26 1978-12-26 Digital-analog converter Pending JPS5588424A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16572678A JPS5588424A (en) 1978-12-26 1978-12-26 Digital-analog converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16572678A JPS5588424A (en) 1978-12-26 1978-12-26 Digital-analog converter

Publications (1)

Publication Number Publication Date
JPS5588424A true JPS5588424A (en) 1980-07-04

Family

ID=15817899

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16572678A Pending JPS5588424A (en) 1978-12-26 1978-12-26 Digital-analog converter

Country Status (1)

Country Link
JP (1) JPS5588424A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6029045A (en) * 1983-06-30 1985-02-14 Fujitsu Ltd Digital/analog converter
JPS6161527A (en) * 1984-08-27 1986-03-29 アールシーエー　トムソン　ライセンシング　コーポレイシヨン Digital signal processor
JPH0228145U (en) * 1988-08-12 1990-02-23
JPH0275826U (en) * 1988-11-28 1990-06-11

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6029045A (en) * 1983-06-30 1985-02-14 Fujitsu Ltd Digital/analog converter
JPH0425732B2 (en) * 1983-06-30 1992-05-01 Fujitsu Ltd
JPS6161527A (en) * 1984-08-27 1986-03-29 アールシーエー　トムソン　ライセンシング　コーポレイシヨン Digital signal processor
JPH0228145U (en) * 1988-08-12 1990-02-23
JPH0275826U (en) * 1988-11-28 1990-06-11

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