A 114-dB 68-mW Chopper-stabilized stereo multibit audio ADC in 5.62 mm2.

A multibit delta-sigma audio stereo analog-to-digital converter has been developed. It employs a fifth-order single-loop 17-level delta-sigma modulator with an input feedforward gain stage. A second-order mismatch shaping (DEM) circuit is utilized to remove tones and nonlinearities caused by capacit...

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Bibliographic Details
Published in:	IEEE Journal of solid state circuits 38, 12 (2003).
Main Author:	YuQing Yang
Format:	Article
Language:	English
Subjects:	1/f noise. 105-dB total harmonic distortion. 114-dB 68-mW Chopper-Stabilized Stereo Multibit Audio ADC. 114-dB dynamic range. 20-kHz audio band. 55-mW power dissipation. 68 mW. Chopper stabilization. DEM block. DEM circuit. Analog circuits. Analog-to-digital converter. Bandgap reference. Capacitor mismatch. Delta-sigma feedback loop. Dynamic element matching. Feedback digital-to-analog converter. Fifth-order single-loop 17-level delta-sigma modulator. Input feedforward gain stage. Minimum latency. Multibit delta-sigma audio stereo. Multibit delta-sigma modulation. Nonlinearity removal. Second-order mismatch shaping. Serial interface. Stereo analog modulators. Switched capacitor. Three-metal CMOS process. Tone removal. Two-stage decimation filter. 0.35-μm double-poly. 5.62 mm2 active area.