Design of A Fully-Digital Class-D Audio Power Amplifier Based on Open-loop Configuration

被引：0
|
作者：
Lin, Liyu [1 ]
Wu, Xiaobo [1 ]
Zhao, Jinchen [1 ]
Zhao, Menglian [1 ]
机构：
[1] Zhejiang Univ, Inst VLSI design, Hangzhou 310003, Zhejiang, Peoples R China
来源：
2012 IEEE INTERNATIONAL CONFERENCE ON ELECTRON DEVICES AND SOLID STATE CIRCUIT (EDSSC) | 2012年
关键词：
class-D amplifier; pulse width modulation (PWM); noise shaper; harmonic distortion; linearization; PULSE-WIDTH MODULATION;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A fully-digital open-loop class-D audio power amplifier is presented. By using the proposed error feedback structure, the Delta Sigma noise shaper reduces the word length of the input signal while maintaining its precision. An optimized compensation algorithm based on 2x interpolation linearization is proposed to improve the total harmonic distortion (THD), as well as to reduce its hardware overhead. The whole system has been implemented in the standard SMIC 0.18 mu m 1P6M Logic Salicide process. The test results show that the system achieves a maximal SNDR of 82.9dB and a dynamic range of 83.7dB with a power consumption of 0.12mW under a supply voltage of 1.8V, which is suitable for the application of high-fidelity audio systems.
引用
收藏
页数：3
相关论文
共 50 条
  • [21] Efficient class-D audio power amplifier eliminates output filter
    2000, Penton Publ Inc, Cleveland, OH, USA (48)
  • [22] Realization of a low-distortion Open-Loop Class D Audio Amplifier with SB-ZePoC
    Schnick, O.
    Mathis, W.
    ADVANCES IN RADIO SCIENCE, 2007, 5 : 225 - 230
  • [23] A Mixed Analog-Digital Class-D Amplifier with Third-Order Loop Filter for Audio Applications
    De Ferrari, Matteo
    Stilgenbauer, Francesco
    Botti, Edoardo
    Meroni, Cristiano
    Bonizzoni, Edoardo
    Malcovati, Piero
    2023 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, ISCAS, 2023,
  • [24] A digital input class-D audio amplifier with sixth-order PWM
    骆树萌
    李冬梅
    Journal of Semiconductors, 2013, (11) : 103 - 108
  • [25] A digital input class-D audio amplifier with sixth-order PWM
    骆树萌
    李冬梅
    Journal of Semiconductors, 2013, 34 (11) : 103 - 108
  • [26] A digital input class-D audio amplifier with sixth-order PWM
    Luo Shumeng
    Li Dongmei
    JOURNAL OF SEMICONDUCTORS, 2013, 34 (11)
  • [27] Low distortion digital pulse width modulation for audio class-D amplifier
    Yoneya, A
    Watanabe, A
    IEEE INTERNATIONAL SYMPOSIUM ON COMMUNICATIONS AND INFORMATION TECHNOLOGIES 2004 (ISCIT 2004), PROCEEDINGS, VOLS 1 AND 2: SMART INFO-MEDIA SYSTEMS, 2004, : 515 - 518
  • [28] Design of class-D audio power amplifiers in SOI technology
    Berkhout, M
    ANALOG CIRCUIT DESIGN: SENSOR AND ACTUATOR INTERFACE ELECTRONICS, INTEGRATED HIGH-VOLTAGE ELECTRONICS AND POWER MANAGEMENT, LOW-POWER AND HIGH-RESOLUTION ADC'S, 2004, : 153 - 176
  • [29] A Fully-Integrated Efficient CMOS Inverse Class-D Power Amplifier for Digital Polar Transmitters
    Chowdhury, Debopriyo
    Thyagarajan, Siva V.
    Ye, Lu
    Alon, Elad
    Niknejad, Ali M.
    IEEE JOURNAL OF SOLID-STATE CIRCUITS, 2012, 47 (05) : 1113 - 1122
  • [30] A High Efficiency Filter-less Class-D Audio Power Amplifier
    Lin, Yu-Jei
    Liou, Wan-Rone
    Yeh, Mei-Ling
    2009 IEEE 8TH INTERNATIONAL CONFERENCE ON ASIC, VOLS 1 AND 2, PROCEEDINGS, 2009, : 1062 - +
12345