GB201518790D0 - Amplifier with adjustable ramp up/down gain for minimizing or eliminating pop noise - Google Patents

Amplifier with adjustable ramp up/down gain for minimizing or eliminating pop noise

Info

Publication number
GB201518790D0
GB201518790D0 GBGB1518790.9A GB201518790A GB201518790D0 GB 201518790 D0 GB201518790 D0 GB 201518790D0 GB 201518790 A GB201518790 A GB 201518790A GB 201518790 D0 GB201518790 D0 GB 201518790D0
Authority
GB
United Kingdom
Prior art keywords
minimizing
amplifier
pop noise
adjustable ramp
down gain
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
GBGB1518790.9A
Other versions
GB2534440A (en
GB2534440B (en
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.)
Cirrus Logic Inc
Original Assignee
Cirrus Logic 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
Priority claimed from US14/920,698 external-priority patent/US9673762B2/en
Application filed by Cirrus Logic Inc filed Critical Cirrus Logic Inc
Publication of GB201518790D0 publication Critical patent/GB201518790D0/en
Publication of GB2534440A publication Critical patent/GB2534440A/en
Application granted granted Critical
Publication of GB2534440B publication Critical patent/GB2534440B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/305—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in case of switching on or off of a power supply
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
GB1518790.9A 2014-10-24 2015-10-23 Amplifier with adjustable ramp up/down gain for minimizing or eliminating pop noise Active GB2534440B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201462068245P 2014-10-24 2014-10-24
US14/920,698 US9673762B2 (en) 2014-10-24 2015-10-22 Amplifier with adjustable ramp up/down gain for minimizing or eliminating pop noise

Publications (3)

Publication Number Publication Date
GB201518790D0 true GB201518790D0 (en) 2015-12-09
GB2534440A GB2534440A (en) 2016-07-27
GB2534440B GB2534440B (en) 2019-01-09

Family

ID=55130128

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1518790.9A Active GB2534440B (en) 2014-10-24 2015-10-23 Amplifier with adjustable ramp up/down gain for minimizing or eliminating pop noise

Country Status (1)

Country Link
GB (1) GB2534440B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107666295A (en) * 2016-07-27 2018-02-06 恩智浦有限公司 Gain calibration controller

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080012820A (en) * 2005-06-10 2008-02-12 로무 가부시키가이샤 Audio signal amplifying circuit and electronic device using the same
US7714646B2 (en) * 2008-03-17 2010-05-11 Himax Analogic, Inc. Audio power amplifier and a pre-amplifier thereof
GB2496664B (en) * 2011-11-18 2016-03-23 Cirrus Logic Int Semiconductor Ltd Amplifier circuit with offset control

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107666295A (en) * 2016-07-27 2018-02-06 恩智浦有限公司 Gain calibration controller
CN107666295B (en) * 2016-07-27 2023-10-24 恩智浦有限公司 Gain calibration controller

Also Published As

Publication number Publication date
GB2534440A (en) 2016-07-27
GB2534440B (en) 2019-01-09

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