title: Large bandwidth op-amp based white noise current source.
abstract: Electrical noise sources are basic building blocks in many measurement and instrumentation applications and in communication systems. In this paper, we propose a quite simple topology for the realization of a programmable, wide bandwidth, white noise current source that requires only two resistors and one operational amplifier. We validate the proposed approach by means of SPICE simulations and demonstrate, by means of proper measurements, the capability of generating a flat current noise spectrum in a frequency range up to four decades from a few Hz up to 100 kHz.
authors.affiliation: Università degli Studi di Messina (DIECII), Contrada di Dio 1, I-98166 Messina, Italy.
authors.forename: Gino
authors.initials: G
authors.lastname: Giusi
authors.affiliation: Università degli Studi di Messina (DIECII), Contrada di Dio 1, I-98166 Messina, Italy.
authors.forename: Graziella
authors.initials: G
authors.lastname: Scandurra
authors.affiliation: Università degli Studi di Messina (DIECII), Contrada di Dio 1, I-98166 Messina, Italy.
authors.forename: Carmine
authors.initials: C
authors.lastname: Ciofi