Referenced Items are not available for this document.
A Low-Power, High-Fidelity Stereo Audio Codec in 0.13 
m CMOS
A Low-Power, High-Fidelity Stereo Audio Codec in 0.13
A 1.5 V low-power stereo audio codec in 0.13 μm CMOS is described. The microphone path includes a programmable gain stage with an enhanced transconductance cell followed by a continuous-time ΣΔ ADC with capacitive feed-forward and capacitive direct feedback. The speaker path employs a 1 mA Class-AB speaker amplifier with an improved quiescent current control circuit that delivers 30 mW to a 32 Ω speaker. The audio input and output paths achieve 92 and 98 dB dynamic range, respectively, with 6.5 mA total quiescent current.
Published in:
Solid-State Circuits, IEEE Journal of
(Volume:47
,
Issue:
5
)
Date of Publication: May 2012
- Page(s):
- 1221 - 1231
- ISSN :
- 0018-9200
- INSPEC Accession Number:
- 12674816
- Digital Object Identifier :
- 10.1109/JSSC.2012.2185591
- Product Type:
- Journals & Magazines
- Date of Publication :
- 22 February 2012
- Date of Current Version :
- 19 April 2012
- Issue Date :
- May 2012
- Sponsored by :
- IEEE Solid-State Circuits Society
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