Title :
A 10mW stereo audio CODEC in 0.13µm CMOS
Author :
Xicheng Jiang ; Jungwoo Song ; Brooks, T.L. ; Jianlong Chen ; Chandrasekar, V. ; Cheung, Felix ; Galal, S. ; Cheung, Darwin ; Ahn, G.C. ; Bonu, M.
Author_Institution :
Broadcom, Irvine, CA, USA
Abstract :
A 1.5 V stereo audio CODEC in 0.13 μm CMOS demonstrates circuit techniques that minimize power consumption for microphone and speaker interfaces. The CODEC includes a 0.35 mA microphone PGA, a 0.35 mA continuous-time ΔΣ ADC and a 1 mA Class-AB speaker amplifier. The audio input and output paths achieve 92 dB and 98 dB SNR, respectively, with 6.5 mA total stereo current.
Keywords :
amplifiers; audio coding; audio equipment; codecs; microphones; power consumption; 0.13 μm CMOS; Class-AB speaker amplifier; continuous-time ΔΣ ADC; current 0.35 mA; current 6.5 mA; gain 92 dB; gain 98 dB; microphone PGA; power 10 mW; power consumption minimization; stereo audio CODEC; voltage 1.5 V; Circuit noise; Codecs; Electronics packaging; Feedback; Filters; Low-frequency noise; Microphones; Noise reduction; Switches; Transconductance;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-6033-5
DOI :
10.1109/ISSCC.2010.5434038
