CA1182924A - Capacitive dac to switched capacitor filter interface circuit - Google Patents

Capacitive dac to switched capacitor filter interface circuit

Info

Publication number
CA1182924A
CA1182924A CA000401210A CA401210A CA1182924A CA 1182924 A CA1182924 A CA 1182924A CA 000401210 A CA000401210 A CA 000401210A CA 401210 A CA401210 A CA 401210A CA 1182924 A CA1182924 A CA 1182924A
Authority
CA
Canada
Prior art keywords
dac
input
output
operational amplifier
reference voltage
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.)
Expired
Application number
CA000401210A
Other languages
English (en)
French (fr)
Inventor
Stephen H. Kelley
Richard W. Ulmer
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of CA1182924A publication Critical patent/CA1182924A/en
Expired 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
    • H03M1/02—Reversible analogue/digital converters
    • 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
    • H03M1/14—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit
    • H03M1/16—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit with scale factor modification, i.e. by changing the amplification between the steps
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)
CA000401210A 1981-05-08 1982-04-19 Capacitive dac to switched capacitor filter interface circuit Expired CA1182924A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/261,850 US4384276A (en) 1981-05-08 1981-05-08 Capacitive DAC to filter interface circuit
US261,850 1981-05-08

Publications (1)

Publication Number Publication Date
CA1182924A true CA1182924A (en) 1985-02-19

Family

ID=22995150

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000401210A Expired CA1182924A (en) 1981-05-08 1982-04-19 Capacitive dac to switched capacitor filter interface circuit

Country Status (5)

Country Link
US (1) US4384276A (en, 2012)
EP (1) EP0078301A4 (en, 2012)
JP (1) JPS58500684A (en, 2012)
CA (1) CA1182924A (en, 2012)
WO (1) WO1982003956A1 (en, 2012)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0169535B1 (en) * 1984-07-23 1992-06-10 Nec Corporation Analog to digital converter
US4618852A (en) * 1985-02-27 1986-10-21 Motorola, Inc. Monotonic A/D converter which minimizes circuitry for high order bit conversion
US4680489A (en) * 1986-09-25 1987-07-14 Rockwell International Corporation Controllable piecewise linear gain circuit
US5357251A (en) * 1988-03-23 1994-10-18 Central Institute For The Deaf Electronic filters, signal conversion apparatus, hearing aids and methods
US5225836A (en) * 1988-03-23 1993-07-06 Central Institute For The Deaf Electronic filters, repeated signal charge conversion apparatus, hearing aids and methods
US5012245A (en) * 1989-10-04 1991-04-30 At&T Bell Laboratories Integral switched capacitor FIR filter/digital-to-analog converter for sigma-delta encoded digital audio
US5162801A (en) * 1991-12-02 1992-11-10 Hughes Aircraft Company Low noise switched capacitor digital-to-analog converter
US5706352A (en) * 1993-04-07 1998-01-06 K/S Himpp Adaptive gain and filtering circuit for a sound reproduction system
US5469164A (en) * 1993-09-30 1995-11-21 Ford Motor Company Circuit and method for digital to analog signal conversion
US6215431B1 (en) * 1999-06-01 2001-04-10 Lsi Logic Corporation Droop-free quasi-continuous reconstruction filter interface
US6727836B2 (en) * 2002-05-14 2004-04-27 Constel Signal Processing Co. Ltd. Method and apparatus for digital-to-analog signal conversion
US6621444B1 (en) * 2002-06-17 2003-09-16 Stmicroelectronics S.R.L. High speed, low power switched-capacitor digital-to-analog converter with a precharge arrangement
GB2425416B (en) 2005-04-19 2009-10-14 Wolfson Microelectronics Plc Improved switched capacitor DAC
US8004442B2 (en) * 2009-04-23 2011-08-23 Infineon Technologies Ag Analog to digital converter (ADC) with comparator function for analog signals

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129863A (en) * 1977-10-03 1978-12-12 Regents Of The University Of California Weighted capacitor analog/digital converting apparatus and method
US4200863A (en) * 1977-10-03 1980-04-29 The Regents Of The University Of California Weighted capacitor analog/digital converting apparatus and method
US4210872A (en) * 1978-09-08 1980-07-01 American Microsystems, Inc. High pass switched capacitor filter section

Also Published As

Publication number Publication date
JPH0542179B2 (en, 2012) 1993-06-25
WO1982003956A1 (en) 1982-11-11
US4384276A (en) 1983-05-17
EP0078301A4 (en) 1986-08-21
JPS58500684A (ja) 1983-04-28
EP0078301A1 (en) 1983-05-11

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Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry