Title :
A stereo 110 dB multi-rate audio ΔΣ DAC with Class-G headphone driver
Author :
Min Gyu Kim ; Dongtian Lu ; Brooks, Todd ; Young Ju Kim ; Chandrasekhar, V. ; Stubbs, Dale ; Maughan, Steven ; Servera Mas, Bartomeu ; Yu, Daren
Author_Institution :
Broadcom, Irvine, CA, USA
Abstract :
A multi-rate, multibit 2-2 MASH ΔΣ audio DAC is proposed to overcome THD+N limitations due to out-of-band noise, clock jitter, and DAC latch error. The ΔΣ DAC, combined with a ground-referenced Class-G headphone driver for mobile applications, achieves 110 dB dynamic range and 4.03 mW/channel power consumption. The achievable output power is 31 mW and the peak pop-and-click noise is 155 μV.
Keywords :
delta-sigma modulation; driver circuits; headphones; jitter; DAC latch error; THD+N limitations; clock jitter; ground-referenced Class-G headphone driver; mobile applications; multirate multibit 2-2 MASH ΔΣ audio DAC; out-of-band noise; power 31 mW; voltage 155 muV; Clocks; Headphones; Latches; Modulation; Multi-stage noise shaping; Noise; Power demand; DAC; Multi-rate; Sigma-delta; audio; headphone driver;
Conference_Titel :
Custom Integrated Circuits Conference (CICC), 2014 IEEE Proceedings of the
Conference_Location :
San Jose, CA
DOI :
10.1109/CICC.2014.6946067
