JPS5775029A - Decoder - Google Patents

Decoder

Info

Publication number
JPS5775029A
JPS5775029A JP15075080A JP15075080A JPS5775029A JP S5775029 A JPS5775029 A JP S5775029A JP 15075080 A JP15075080 A JP 15075080A JP 15075080 A JP15075080 A JP 15075080A JP S5775029 A JPS5775029 A JP S5775029A
Authority
JP
Japan
Prior art keywords
alpha
capacity value
capacitors
rule
closed
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
JP15075080A
Other languages
Japanese (ja)
Other versions
JPS628050B2 (en
Inventor
Hidehiro Sato
Kazuo Yamakido
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15075080A priority Critical patent/JPS5775029A/en
Publication of JPS5775029A publication Critical patent/JPS5775029A/en
Publication of JPS628050B2 publication Critical patent/JPS628050B2/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
    • H03M1/74—Simultaneous conversion
    • H03M1/80—Simultaneous conversion using weighted impedances

Abstract

PURPOSE:To obtain a decoder having a prescribed nonlinearity, by setting the ratio of the overall capacity value of a capacitor array circuit to the capacity value of the hold capacitor of a sample holding circuit to a prescribed value. CONSTITUTION:A reset switch RS2 is closed to discharge a hold capacitor CH, and next, a set switch ST is connected to an input terminal VIN and a sampling switch SP is closed. An input voltage is divided and applied to capacitors C1- C8, and switches S1-S8 are controlled selectively by a PCM code. At this time, when the overall capacity value of capacitors C1-C8 is denoted as Ca, the gain of a sample holding circit is GSH= Ca/CH. Since Ca=256C is true, CH is 251C/alpha approximately in case of the mu rule and is 252C/alpha in case of the A rule. However, alpha is 1 practically.
JP15075080A 1980-10-29 1980-10-29 Decoder Granted JPS5775029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15075080A JPS5775029A (en) 1980-10-29 1980-10-29 Decoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15075080A JPS5775029A (en) 1980-10-29 1980-10-29 Decoder

Publications (2)

Publication Number Publication Date
JPS5775029A true JPS5775029A (en) 1982-05-11
JPS628050B2 JPS628050B2 (en) 1987-02-20

Family

ID=15503594

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15075080A Granted JPS5775029A (en) 1980-10-29 1980-10-29 Decoder

Country Status (1)

Country Link
JP (1) JPS5775029A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52136552A (en) * 1976-05-10 1977-11-15 Ibm Condenser circuit signal converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52136552A (en) * 1976-05-10 1977-11-15 Ibm Condenser circuit signal converter

Also Published As

Publication number Publication date
JPS628050B2 (en) 1987-02-20

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