JPS5513545A - Semiconductor d-a converter - Google Patents

Semiconductor d-a converter

Info

Publication number
JPS5513545A
JPS5513545A JP8583778A JP8583778A JPS5513545A JP S5513545 A JPS5513545 A JP S5513545A JP 8583778 A JP8583778 A JP 8583778A JP 8583778 A JP8583778 A JP 8583778A JP S5513545 A JPS5513545 A JP S5513545A
Authority
JP
Japan
Prior art keywords
potential
power source
trq
base
terminal
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
JP8583778A
Other languages
Japanese (ja)
Inventor
Kiyoyuki Yokoyama
Toru Adachi
Tsunetaka Sudo
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP8583778A priority Critical patent/JPS5513545A/en
Publication of JPS5513545A publication Critical patent/JPS5513545A/en
Pending legal-status Critical Current

Links

Landscapes

  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE: To make it possible to obtain a stable conversuon output by connecting the base of a current supplying transistor to the bias power source terminal and giving the bias voltage of a potential between the power source voltage and the ground potential to the terminal.
CONSTITUTION: N-bit D-A converter circuits B1, B2...BN consisting of PNP-type current supplying transistor TQ1, NPN-type TrQ2 and PNP-type outputting TrQ3 which are separated from one another electrically are provided on the common substrate. Here, the base of TrQ1 is connected to the bias power source terminal 3, and the bias voltage of a potential between the potential of the power source voltage given to power source 1 and the ground potential is given to terminal 3, and bit inputs S1, S2...SN of a digital signal coded in the N-bit constitution are supplied to obtain an analogue signal output in the output end 2 side. As a result, the collector of TrQ1 holds a potential higher than the base potential, and a transmission injection current from the collector side toward the base side is not generated, so that a stable conversion output can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP8583778A 1978-07-14 1978-07-14 Semiconductor d-a converter Pending JPS5513545A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8583778A JPS5513545A (en) 1978-07-14 1978-07-14 Semiconductor d-a converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8583778A JPS5513545A (en) 1978-07-14 1978-07-14 Semiconductor d-a converter

Publications (1)

Publication Number Publication Date
JPS5513545A true JPS5513545A (en) 1980-01-30

Family

ID=13869965

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8583778A Pending JPS5513545A (en) 1978-07-14 1978-07-14 Semiconductor d-a converter

Country Status (1)

Country Link
JP (1) JPS5513545A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2022195692A1 (en) * 2021-03-16 2022-09-22

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2022195692A1 (en) * 2021-03-16 2022-09-22
WO2022195692A1 (en) * 2021-03-16 2022-09-22 三菱電機株式会社 Digital-to-analog converter
US12355466B2 (en) 2021-03-16 2025-07-08 Mitsubishi Electric Corporation Digital-to-analog converter

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