A 114 dB 68 mW chopper-stabilized stereo multi-bit audio A/D converter

Author

YuQing Yang ; Chokhawala, A. ; Alexander, M. ; Melanson, J. ; Hester, D.

Author_Institution

Cirrus Logic, Austin, TX, USA

fYear

2003

fDate

13-13 Feb. 2003

Firstpage

56

Abstract

A fifth-order single-loop seventeen level /spl Sigma//spl Delta/ modulator with an input feed-forward gain stage and second-order mismatch shaping logic achieves 114 dB dynamic range and -105 dB THD over the 20 kHz audio band. This stereo ADC occupies 5.62 mm/sup 2/ active area in a 0.35 /spl mu/m 2P 3M CMOS process and dissipates only 55 mW power in the analog circuits.

Keywords

CMOS integrated circuits; audio signal processing; choppers (circuits); feedforward; sigma-delta modulation; 0.35 micron; 20 kHz; 20 kHz audio band; 2P 3M CMOS process; 55 mW; 68 mW; THD; active area; chopper-stabilized stereo multi-bit audio A/D converter; dynamic range; fifth-order single-loop seventeen level /spl Sigma//spl Delta/ modulator; input feed-forward gain stage; power dissipation; second-order mismatch shaping logic; stereo ADC; Capacitors; Delay; Feedback circuits; Feedback loop; Logic; Noise shaping; Quantization; Sampling methods; Stability; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference, 2003. Digest of Technical Papers. ISSCC. 2003 IEEE International

Conference_Location

San Francisco, CA, USA

ISSN

0193-6530

Print_ISBN

0-7803-7707-9

Type

conf

DOI

10.1109/ISSCC.2003.1234205

Filename

1234205