A 0.35 μm CMOS AM demodulator

Pietro Maris Ferreira , Fernando a P Barúqui (1) , Antonio Petraglia (1)

1 UFRJ - Universidade Federal do Rio de Janeiro [Brasil] = Federal University of Rio de Janeiro [Brazil] = Université fédérale de Rio de Janeiro [Brésil]

This paper presents a 0.35 lm CMOS AM demodulator circuit. Design details, simulations and measurements results of the monolithic implementation of a highly accurate synchronous rectifier are shown. The cir- cuit implements an envelope detector with a ±1.5 V output swing on a 15 pF load. It dissipates 15 mW from a ±2.5 V voltage supply, and presents SNR = 81 dB measured at a THD =-40 dB for an input signal having 100% modulation index.

Mots clés: AM demodulator; Integrated circuits; Vibration detector; Ideal rectifier

Domaines: Micro et nanotechnologies/Microélectronique; Electronique

Pietro Maris Ferreira, Fernando a P Barúqui, Antonio Petraglia. A 0.35 μm CMOS AM demodulator. Analog Integrated Circuits and Signal Processing, 2008, 57 (1-2), pp.89-96. ⟨10.1007/s10470-008-9207-4⟩. ⟨hal-01417139⟩