Artículo
Design method of optical detection systems based on transimpedance amplifiers
Vázquez, Patricia María Elena
; Veiras, Francisco Ezequiel
; Ciocci Brazzano, Ligia
; Sorichetti, Patricio Aníbal
Fecha de publicación:
11/2021
Editorial:
American Institute of Physics
Revista:
Review of Scientific Instruments
ISSN:
0034-6748
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Designing detection systems based on transimpedance amplifiers is a complex task because noise, frequency response, and stability are coupled constraints. This work presents a straightforward design method of detection systems based on transimpedance amplifiers. We take into account the objectives, scope of the design, and requirements and specifications, including the input signal levels. According to the small-signal model, the noise and stability are analyzed in detail. We present a systematic procedure to search for the acceptable values of the feedback network components based on these analyses. Then, we define a merit function to compare the performance of the acceptable combinations of feedback network components. For every acceptable combination, the function gives a quantitative measure of the degree of compliance for each design parameter: signal-to-noise ratio, highest operating frequency, and phase margin. As an example, we apply the method to optimize the design of an optical detection system using a PIN photodiode and a low-noise operational amplifier.
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Citación
Vázquez, Patricia María Elena; Veiras, Francisco Ezequiel; Ciocci Brazzano, Ligia; Sorichetti, Patricio Aníbal; Design method of optical detection systems based on transimpedance amplifiers; American Institute of Physics; Review of Scientific Instruments; 92; 11; 11-2021; 1-11
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