Title :
A 147 dB dynamic range electronic attenuator for audiometric applications with on-chip 1 W power amplifier
Author :
Brigati, S. ; Francesconi, F. ; Fumagalli, D. ; Grassi, G. ; Malcovati, P. ; Poletti, M.
Author_Institution :
Micronova Sistemi S.r.l., Trivolzio (Pavia), Italy
Abstract :
This paper presents an electronic attenuator for audiometric applications, including an on-chip power amplifier which drives 8 Vppon a 7Ω resistive load. The 24 mm2chip, fabricated in a 2 µm high-voltage CMOS process, achieves 147 dB of dynamic range and 80 dB of signal-to-noise ratio, consuming 33 mA from a ±5 V power supply.
Keywords :
Acoustic noise; Attenuation; Attenuators; Control systems; Dynamic range; Power amplifiers; Power generation; Power supplies; Signal processing; Signal to noise ratio;
Conference_Titel :
Solid-State Circuits Conference, 2000. ESSCIRC '00. Proceedings of the 26rd European
Conference_Location :
Stockholm, Sweden
