Title :
A high-speed, low input current CMOS integrated front end for multi-spectral photodiode arrays
Author :
Nabki, Frederic ; Boukadoum, Mounir
Author_Institution :
Comput. Sci. Dept., Univ. of Quebec at Montreal, Montreal, QC, Canada
Abstract :
A low current front end trans-impedance amplifier (TIA) switching bank for multi-spectral photodiode (PD) arrays is presented. The design mitigates PD capacitance effects by using a gm-boosted input common-gate stage. Simulation results show that a bandwidth of 97 MHz can be reached with a maximal gain of 7.53 MΩ with a tuning range of 24 dB. The system is suited to low PD currents as its total input referred rms current noise over a 100 MHz bandwidth is of 41 nA.
Keywords :
CMOS analogue integrated circuits; high-speed integrated circuits; operational amplifiers; photodiodes; switching; gm-boosted input common-gate stage; high-speed CMOS integrated front end; low input current CMOS integrated front end; multispectral photodiode arrays; referred rms current noise; transimpedance amplifier switching bank; Bandwidth; Fluorescence; Gain; Impedance; Multiplexing; Noise; Tuning;
Conference_Titel :
New Circuits and Systems Conference (NEWCAS), 2011 IEEE 9th International
Conference_Location :
Bordeaux
Print_ISBN :
978-1-61284-135-9
DOI :
10.1109/NEWCAS.2011.5981218
