NL7709620A - A:D converter circuit including four transistors - has main and auxiliary reference voltages and current source connected to transistor bridge circuit - Google Patents

A:D converter circuit including four transistors - has main and auxiliary reference voltages and current source connected to transistor bridge circuit

Info

Publication number
NL7709620A
NL7709620A NL7709620A NL7709620A NL7709620A NL 7709620 A NL7709620 A NL 7709620A NL 7709620 A NL7709620 A NL 7709620A NL 7709620 A NL7709620 A NL 7709620A NL 7709620 A NL7709620 A NL 7709620A
Authority
NL
Netherlands
Prior art keywords
transistor
transistors
current source
main
source connected
Prior art date
Application number
NL7709620A
Other languages
Dutch (nl)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Priority to NL7709620A priority Critical patent/NL7709620A/en
Publication of NL7709620A publication Critical patent/NL7709620A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/34—Analogue value compared with reference values
    • H03M1/36—Analogue value compared with reference values simultaneously only, i.e. parallel type
    • H03M1/361—Analogue value compared with reference values simultaneously only, i.e. parallel type having a separate comparator and reference value for each quantisation level, i.e. full flash converter type

Abstract

The analogue-digital conversion unit uses a current source (1) with one earthed terminal and the other connected to a bridge circuit containing four transistors (2, 3, 6, 7,). A reference voltage (VR) is applied to the control terminal of the first transistor (2) and the input voltage (VI) to that of the third transistor (6). The second transistor, of p-conductivity type, (the others being n-conductivity type) is in series with the first, which is also in parallel with the fourth. An output is taken to a differential voltage device (14) which works in conjunction with an auxiliary reference voltage (VH1). The output comes from the fourth transistor, which is effectively in one arm of the bridge, and has a polarity dependent on whether the input voltage is greater or less than the reference voltage.
NL7709620A 1977-09-01 1977-09-01 A:D converter circuit including four transistors - has main and auxiliary reference voltages and current source connected to transistor bridge circuit NL7709620A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7709620A NL7709620A (en) 1977-09-01 1977-09-01 A:D converter circuit including four transistors - has main and auxiliary reference voltages and current source connected to transistor bridge circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7709620A NL7709620A (en) 1977-09-01 1977-09-01 A:D converter circuit including four transistors - has main and auxiliary reference voltages and current source connected to transistor bridge circuit

Publications (1)

Publication Number Publication Date
NL7709620A true NL7709620A (en) 1977-11-30

Family

ID=19829112

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7709620A NL7709620A (en) 1977-09-01 1977-09-01 A:D converter circuit including four transistors - has main and auxiliary reference voltages and current source connected to transistor bridge circuit

Country Status (1)

Country Link
NL (1) NL7709620A (en)

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Legal Events

Date Code Title Description
BV The patent application has lapsed