A 3.4 W Digital-In Class-D Audio Amplifier in 0.14 $\mu $m CMOS

Dooper, L.; Berkhout, Marco

doi:10.1109/jssc.2012.2191683

Cited by 31 publications

(22 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With R 11 = R 1 + R 2 + R 3 + R 4 + R 5 and R 12 = R 6 + R 7 + R 8 + R 9 + R 10 The gain and cutoff frequency of the PGA is:…”

Section: Fig 2the Proposed Programmable Gain Amplifiermentioning

confidence: 99%

Design of a Class-D Audio Amplifier With Analog Volume Control for Mobile Applications

Khadiri¹,

Qjidaa²

2016

International Journal of Electronics and Telecommunications

View full text Add to dashboard Cite

Abstract-A class-D audio amplifier with analog volume control (AVC) for portable applications is proposed in this paper. The proposed class-D consist of two sections. First section is an analog volume control which consists of an integrator, an analog MUX and a programmable gain amplifier (PGA). The AVC is implemented with three analog inputs (Audio, Voice, FM). Second section is a driver which consists of a ramp generator, a comparator, a level shifter and a gate driver. The driver is designed to obtain a low distortion and a high efficiency. Designed with 0.18 um 1P6M CMOS technology, the class-D audio amplifier with AVC achieves a total root-mean-square (RMS) output power of 0.5W, a total harmonic distortion plus noise (THD+N) at the 8-Ω load less than 0.06% and a power efficiency of 90% with a total area of 1.74 mm2.

show abstract

“…With R 11 = R 1 + R 2 + R 3 + R 4 + R 5 and R 12 = R 6 + R 7 + R 8 + R 9 + R 10 The gain and cutoff frequency of the PGA is:…”

Section: Fig 2the Proposed Programmable Gain Amplifiermentioning

confidence: 99%

Design of a Class-D Audio Amplifier With Analog Volume Control for Mobile Applications

Khadiri¹,

Qjidaa²

2016

International Journal of Electronics and Telecommunications

View full text Add to dashboard Cite

show abstract

“…Wireless communication Schoofs et al (2007) Control systems Azuma and Sugie (2008a,b) Audio amplifiers Dooper and Berkhout (2012) Sensing and measuring Acero et al (2007) Part II: design methods Average gain optimization Callegari and Bizzarri (2013) and Schreier (2009) Peak gain optimization Nagahara et al (2006), Osqui et al (2007) and Nagahara and Yamamoto (2012) Advanced control theory Quevedo and Goodwin (2005) and Yu (2006) Others Azuma and Sugie (2008a,b) Yamamoto, 2006). Another promising result recently developed in control theory is the generalized Kalman-Yakubovich-Popov (GKYP) lemma (Iwasaki & Hara, 2005), based on which, some new developments on Σ modulator design also have been reported in the literature (Nagahara et al, 2006;Osqui, Roozbehani, & Megretski, 2007).…”

Section: Part I: Applicationsmentioning

confidence: 99%

Design of delta–sigma modulators via generalized Kalman–Yakubovich–Popov lemma

Gao

2014

Automatica

View full text Add to dashboard Cite

“…The proposed design is fabricated in a 40nm CMOS technology using a fully digital PWM [DPWM] modulator feeding a closed-loop controller to improve PSRR [3]. A prototype in Cu-pillars BGA package, as shown in figure 6, has been realized with the sense resistors layout interdigitated with the Class-D power stage using a full symmetrical layout.…”

Section: Measurementsmentioning

confidence: 99%

A fully integrated Class-D amplifier in 40nm CMOS with dynamic cascode bias and load current sensing

Binet

Amiard

Allier

et al. 2014

ESSCIRC 2014 - 40th European Solid State Circuits Conference (ESSCIRC)

View full text Add to dashboard Cite

To address in the same time high efficiency, high output power and high complexity functions for Signal Processing systems, the partitioning tends to integrate in the same chip some functions of the digital (like DSP) and audio amplifiers (like Class-D) in a deep submicron technology. To fulfill high output power demand without compromising the device's reliability constraints, the amplifier power-stage use cascoded structure. In this paper a new design aimed to decrease the power stage consumption adapting the cascode bias of power stage branches during its switching is presented without impacting the MOS device's reliability.In addition, a fully integrated load current sensing, independent from any process, package or temperature spread, suitable for Class-D speaker protection systems, is explained. The circuit has been implemented in 40nm CMOS technology.I.

show abstract

A 3.4 W Digital-In Class-D Audio Amplifier in 0.14 $\mu $m CMOS

Cited by 31 publications

References 7 publications

Design of a Class-D Audio Amplifier With Analog Volume Control for Mobile Applications

Design of a Class-D Audio Amplifier With Analog Volume Control for Mobile Applications

Design of delta–sigma modulators via generalized Kalman–Yakubovich–Popov lemma

A fully integrated Class-D amplifier in 40nm CMOS with dynamic cascode bias and load current sensing

Contact Info

Product

Resources

About