A Fully Integrated 4GHz Continuous-Time Bandpass Delta-Sigma Converter

Quentin Béraud-Sudreau (1) , André Mariano (1) , Dominique Dallet (1) , Yann Deval (1) , Jean-Baptiste Begueret (1)

1 IMS - Laboratoire de l'intégration, du matériau au système

A fourth-order bandpass Delta-Sigma converter with integrated LC resonators is presented in this paper. It is based on a multi-feedback architecture with a multi-bit quantizer in the main modulator path. This architecture allows achieving high-order noise-shaping maintaining modulator stability. Two integrated LC resonators with active Q enhancement circuits are used in order to improve the overall resonator quality factor. This data converter is designed in a 0.13 µm CMOS process from STMicroelectronics. It achieves a DR of 68dB in 30MHz bandwidth with a 4 GHz sampling frequency

Domaines: Electronique

Quentin Béraud-Sudreau, André Mariano, Dominique Dallet, Yann Deval, Jean-Baptiste Begueret. A Fully Integrated 4GHz Continuous-Time Bandpass Delta-Sigma Converter. ICECS 2010, Dec 2010, ATHENES, Greece. pp.250-254. ⟨hal-00531663⟩