Title :
A 10.7MHz self-calibrated SC multibit 2nd-order bandpass Σ-Δ modulator
Author :
Colonna, V. ; Gandolfi, G. ; Stefani, F. ; Baschirotto, A.
Author_Institution :
STMicroelectronics, Cornaredo, MI, Italy
Abstract :
A 2nd-order multibit BandPass ΣΔ Modulator (BPΣΔM) to be used for 10.7MHz IF sampling of the AM/FM broadcasting radio signal is presented. The modulator is realized with SC technique and it is sampled at 37.05MHz. The accuracy of the in-band noise shaping is ensured with two self-calibrating control systems. In a 0.18µm CMOS technology the device die size is 1mm2and the power consumption is 75mW. The modulator features 76dB dynamic range and 67dB peak-SNR within a 200kHz bandwidth (FM bandwidth).
Keywords :
Band pass filters; Bandwidth; CMOS technology; Calibration; Circuits; Energy consumption; Noise shaping; Radio broadcasting; Sampling methods; Technological innovation;
Conference_Titel :
Solid-State Circuits Conference, 2002. ESSCIRC 2002. Proceedings of the 28th European
Conference_Location :
Florence, Italy
