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An integrated 3-level fully adjustable PWM class-D audio amplifier in 0.35um CMOS

Författare:
Publiceringsår: 2008
Språk: Engelska
Sidor: 168-171
Dokumenttyp: Konferensbidrag
Förlag: IEEE Press

Sammanfattning

A Class-D audio amplifier utilizing a fully adjustable 3-level Pulse Width Modulation (PWM) is presented. The amplifier is fully integrated in a 0.35um CMOS process, and is powered by a 3.3V power supply. The system includes an internal fully adjustable triangle-wave oscillator, which is used to generate the PWM carrier. Delivering an output power of 300mW is a differential bridge (7.5cm pMOS, 3cm nMOS), driving a 16¿ load. The THD+N of the system is less than 0.2%, and the efficiency at 300mW is 89%.

Disputation

Nyckelord

  • Technology and Engineering

Övriga

Norchip
2008-11-17/2008-11-18
Tallin
Published
Yes
  • Analog RF
  • ISBN: 978-1-4244-2492-4

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