Title :
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
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;
Conference_Titel :
Solid-State Circuits Conference, 2003. Digest of Technical Papers. ISSCC. 2003 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-7707-9
DOI :
10.1109/ISSCC.2003.1234205
