Title :
Transimpedance amplifier with PDCM and AGC
Author_Institution :
FibreHome Telecommun. Technol. CO. LTD, Wuhan
Abstract :
A 1.25 Gb/s transimpedance amplifier(TIA) with high precision photodetector current monitor.(PDCM) and auto gain control(AGC) circuit is proposed. The PDCM circuit can get precision and linearity monitor voltage output. The AGC is less dependent on the alteration of devices parameter because of the design technology based on proportional parameter. The design is based on 0.25-mum BICMOS process. HSPICE post simulation shows that in all the worst cases, the PDCM can get a nearly perfect linearity output, and the floating region of initial AGC bias voltage is between -0.384% and 0.307%.
Keywords :
BiCMOS analogue integrated circuits; amplifiers; optical communication; photodetectors; AGC; BICMOS process; HSPICE post simulation; PDCM; auto gain control circuit; photodetector current monitor; transimpedance amplifier; Circuits; Feeds; Linearity; Monitoring; Optical amplifiers; Optical fiber communication; Photodetectors; Resistors; Sampling methods; Voltage; AGC; Analog circuits; current monitor; optical communication; transimpedance amplifier;
Conference_Titel :
ASIC, 2007. ASICON '07. 7th International Conference on
Conference_Location :
Guilin
Print_ISBN :
978-1-4244-1132-0
Electronic_ISBN :
978-1-4244-1132-0
DOI :
10.1109/ICASIC.2007.4415652
