TY - GEN
T1 - A delta-sigma modulator-based class-D amplifier
AU - Kuo, Chien Hung
AU - Lin, Sheng Chi
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/12/27
Y1 - 2016/12/27
N2 - A new architecture of class-D amplifier with a multibit delta-sigma modulator control is presented in this paper. In the presented amplifier, the 3-bit 8-level digital outputs of the second-order delta-sigma modulator are utilized to generate switching signals with different pulse widths for the class-D power amplifier. A closed-loop class-D amplifier is adopted by feeding the analog output signal from the power stage to the input to improve the linearity. The presented class-D amplifier is simulated with TSMC 0.18-μm CMOS process. The SNDR of the proposed amplifier is 78 dB within a 25 kHz signal bandwidth under a sample rate of 2.56 MHz. The THD is 0.01% at a power consumption of 140 mW.
AB - A new architecture of class-D amplifier with a multibit delta-sigma modulator control is presented in this paper. In the presented amplifier, the 3-bit 8-level digital outputs of the second-order delta-sigma modulator are utilized to generate switching signals with different pulse widths for the class-D power amplifier. A closed-loop class-D amplifier is adopted by feeding the analog output signal from the power stage to the input to improve the linearity. The presented class-D amplifier is simulated with TSMC 0.18-μm CMOS process. The SNDR of the proposed amplifier is 78 dB within a 25 kHz signal bandwidth under a sample rate of 2.56 MHz. The THD is 0.01% at a power consumption of 140 mW.
KW - Class-D Amplifier
KW - Delta-Sigma Class-D Amplifier
KW - Switching Amplifier
UR - http://www.scopus.com/inward/record.url?scp=85010443359&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85010443359&partnerID=8YFLogxK
U2 - 10.1109/GCCE.2016.7800440
DO - 10.1109/GCCE.2016.7800440
M3 - Conference contribution
AN - SCOPUS:85010443359
T3 - 2016 IEEE 5th Global Conference on Consumer Electronics, GCCE 2016
BT - 2016 IEEE 5th Global Conference on Consumer Electronics, GCCE 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 5th IEEE Global Conference on Consumer Electronics, GCCE 2016
Y2 - 11 October 2016 through 14 October 2016
ER -