Title :
A 4 GHz differential transimpedance amplifier channel for a pulsed time-of-flight laser radar
Author :
Pennala, R. ; Ruotsalainen, I. ; Palojärvi, P. ; Kostamovaara, J.
Author_Institution :
Dept. of Electr. Eng., Oulu Univ., Finland
Abstract :
A wideband differential transimpedance amplifier channel was designed for the receiver of a pulsed time-of-flight (TOF) laser radar using a high frequency bipolar analog array. The measured maximum total transimpedance is ~11 kΩ the bandwidth ~2.5 GHz (limited by the buffer amplifier used for test purposes only, corresponding to an internal bandwidth of ~4 GHz) and the input-referred noise current density ~8 pA/√(Hz). The amplifier channel has a current mode gain control cell in front of the transimpedance preamplifier to reduce the dynamic range of the output signal
Keywords :
differential amplifiers; optical radar; optical receivers; preamplifiers; radar receivers; wideband amplifiers; 2.5 GHz; 4 GHz; current mode gain control cell; dynamic range; high frequency bipolar analog array; noise current density; preamplifier; pulsed time-of-flight laser radar; receiver; wideband differential transimpedance amplifier channel; Bandwidth; Broadband amplifiers; Differential amplifiers; Frequency; Laser noise; Laser radar; Optical arrays; Optical design; Optical pulses; Pulse amplifiers;
Conference_Titel :
Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4455-3
DOI :
10.1109/ISCAS.1998.704270
