Title :
A 5.2mW, 0.0016% THD up to 20kHz, ground-referenced audio decoder with PSRR-enhanced class-AB 16Ω headphone amplifiers
Author :
Wen, Shon-Hang ; Yang, Cheng-Chung
Author_Institution :
MeditTek Inc., Hsinchu, Taiwan
Abstract :
A low-power ground-referenced audio decoder with PSRR-enhanced class-AB headphone amplifiers presents <;0.0016% THD in the whole audio band against the supply ripple by a negative charge-pump. Realized in the 40nm CMOS, the fully-integrated stereo decoder achieves 91dB SNDR and 100dB dynamic range while driving a 16Ω headphone load and consumes 5.2mW from a 1.8V power supply. The core area is 0.093mm2/channel only.
Keywords :
CMOS integrated circuits; audio coding; audio-frequency amplifiers; charge pump circuits; decoding; harmonic distortion; headphones; CMOS; PSRR-enhanced class-AB 16Ω headphone amplifiers; audio band; fully-integrated stereo decoder; ground-referenced audio decoder; headphone load; negative charge-pump; power 5.2 mW; size 40 nm; voltage 1.8 V; CMOS integrated circuits; Charge pumps; Decoding; Headphones; Manganese; Noise; Phasor measurement units; Class-AB; Ground-referenced; PSRR-enhanced;
Conference_Titel :
VLSI Circuits (VLSIC), 2012 Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4673-0848-9
Electronic_ISBN :
978-1-4673-0845-8
DOI :
10.1109/VLSIC.2012.6243769
