Title :
A 96dB SNR -75dB THD switched-capacitor filter for 16bit audio codec applications
Author :
Baschirotto, A. ; Brasca, G. ; Montecchi, F. ; Stefani, F.
Author_Institution :
Dipartimento di Elettronica - Universita´´ di Pavia, Via Ferrata, 1 - 27100 Pavia - ITALIA
Abstract :
A complete stereo 16bit oversampled D/A converter has been realized in 0.7¿m BiCMOS technology. The performance limitations of the system arise from the output smoothing filter here reported. This is a fully integrated 4th order filter which satisfy the specification (THD of -72dB for a full scale input signal and SNR of 96dB) for a 16bit audio CODEC, with a reduced power consumption (about 40mW per-channel). This has been achieved with an accurate evaluation in the design of the possible noise and distortion sources, and by proper limiting their contributions.
Keywords :
Active filters; Attenuation; BiCMOS integrated circuits; Codecs; Digital filters; Digital modulation; Energy consumption; Frequency; Signal to noise ratio; Smoothing methods;
Conference_Titel :
Solid-State Circuits Conference, 1996. ESSCIRC '96. Proceedings of the 22nd European
Conference_Location :
Neuchatel, Switzerland
Print_ISBN :
2-86332-197-8
