TW200743299A - Compensated gain control - Google Patents

Compensated gain control

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Publication number
TW200743299A
TW200743299A TW095116210A TW95116210A TW200743299A TW 200743299 A TW200743299 A TW 200743299A TW 095116210 A TW095116210 A TW 095116210A TW 95116210 A TW95116210 A TW 95116210A TW 200743299 A TW200743299 A TW 200743299A
Authority
TW
Taiwan
Prior art keywords
comparator
voltage
compensated
gain control
class
Prior art date
Application number
TW095116210A
Other languages
Chinese (zh)
Inventor
Jy-Der David Tai
Original Assignee
Tai 1 Microelectronics 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 Tai 1 Microelectronics Corp filed Critical Tai 1 Microelectronics Corp
Priority to TW095116210A priority Critical patent/TW200743299A/en
Publication of TW200743299A publication Critical patent/TW200743299A/en

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  • Amplifiers (AREA)

Abstract

A compensated gain control circuit, applicable to a class-D audio power amplifier, comprises a voltage divider, a first comparator, a ramp signal generator, and a second comparator. The duty cycle of a PWM signal can be modulated through the voltage divider, the first comparator, the ramp signal generator, the second comparator according to the voltage difference between the high voltage level and the low voltage level of a voltage source. The loss of power gain can be compensated by adjusting the duty cycle. As a result, the class-D audio power amplifier is able to maintain a fixed output power or power gain for different voltage sources.
TW095116210A 2006-05-08 2006-05-08 Compensated gain control TW200743299A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW095116210A TW200743299A (en) 2006-05-08 2006-05-08 Compensated gain control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW095116210A TW200743299A (en) 2006-05-08 2006-05-08 Compensated gain control

Publications (1)

Publication Number Publication Date
TW200743299A true TW200743299A (en) 2007-11-16

Family

ID=57914278

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095116210A TW200743299A (en) 2006-05-08 2006-05-08 Compensated gain control

Country Status (1)

Country Link
TW (1) TW200743299A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104365018A (en) * 2012-05-24 2015-02-18 慕尼黑应用技术大学 Switched amplifier for variable supply voltage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104365018A (en) * 2012-05-24 2015-02-18 慕尼黑应用技术大学 Switched amplifier for variable supply voltage
CN104365018B (en) * 2012-05-24 2017-08-04 慕尼黑应用技术大学 Switching amplifier for varying supply voltage

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