Title :
Sensitivity-enhanced OEIC with capacitance multiplier for reduced lower-cutoff frequency
Author :
Leeb, J. ; Knorr, J. ; Zimmermann, H.
Author_Institution :
Inst. for Electr. Measurements & Circuits Design, Vienna Univ. of Technol., Austria
Abstract :
A BiCMOS optoelectronic integrated circuit for the use in future optical storage systems is presented. In this approach a PIN photodiode is integrated together with the transimpedance amplifier (TIA). The amplifier consists of two branches, connected via common current source. Thereby it is possible to realize differential outputs and to double the overall transimpedance of the circuit. In order to adhere this doubling effect down to deep frequencies, we, in addition, present an active capacitance multiplier which is used to realize high capacitance values with a minimum of area consumption. The measurement results of the OEIC showed a differential transimpedance of 84kΩ and a -3dB bandwidth of 500MHz.
Keywords :
BiCMOS integrated circuits; analogue multipliers; differential amplifiers; integrated optoelectronics; optical storage; p-i-n photodiodes; 500 MHz; 84 kohms; BiCMOS integrated circuit; PIN photodiode; active capacitance multiplier; capacitance values; common current source; differential transimpedance; lower-cutoff frequency; optical storage systems; optoelectronic integrated circuit; transimpedance amplifier; BiCMOS integrated circuits; Capacitance; Frequency; Integrated optics; Optical amplifiers; Optical sensors; Optoelectronic devices; PIN photodiodes; Photonic integrated circuits; Stimulated emission;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1328323
