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M. Kovinic, D. Drincic, and S. Jankovic, "Imperfections and Possible Advances in Analog Summing Amplifier Design," Paper 7569, (2008 October.). doi: M. Kovinic, D. Drincic, and S. Jankovic, "Imperfections and Possible Advances in Analog Summing Amplifier Design," Paper 7569, (2008 October.). doi:
Abstract: The major requirement in the design of the analogue summing amplifier is the quality of the summing bus. The key problem in most common designs is the artefact of summing bus impedance, which cannot be considered as true physical impedance, because it has been generated by negative feedback. The loop gain of the amplifier used will limit the performance at higher audio frequencies where the loop gain is lower, increasing the channels cross talk. The inevitable effect of heavy feedback is the increased susceptibility of the amplifier to oscillate as well as sensitivity to RFI. The advanced solution, presented in this work, could be seen in the usage of the transistor common-base pair (CB-CB) configuration as a summing bus. The CB pair offers inherent low-input impedance, low-noise, very good frequency response, and, very importantly, makes the application of total feedback not necessarily.

@article{kovinic2008imperfections,
author={kovinic, milan and drincic, dragan and jankovic, sasha},
journal={journal of the audio engineering society},
title={imperfections and possible advances in analog summing amplifier design},
year={2008},
volume={},
number={},
pages={},
doi={},
month={october},} @article{kovinic2008imperfections,
author={kovinic, milan and drincic, dragan and jankovic, sasha},
journal={journal of the audio engineering society},
title={imperfections and possible advances in analog summing amplifier design},
year={2008},
volume={},
number={},
pages={},
doi={},
month={october},
abstract={the major requirement in the design of the analogue summing amplifier is the quality of the summing bus. the key problem in most common designs is the artefact of summing bus impedance, which cannot be considered as true physical impedance, because it has been generated by negative feedback. the loop gain of the amplifier used will limit the performance at higher audio frequencies where the loop gain is lower, increasing the channels cross talk. the inevitable effect of heavy feedback is the increased susceptibility of the amplifier to oscillate as well as sensitivity to rfi. the advanced solution, presented in this work, could be seen in the usage of the transistor common-base pair (cb-cb) configuration as a summing bus. the cb pair offers inherent low-input impedance, low-noise, very good frequency response, and, very importantly, makes the application of total feedback not necessarily.},}

TY - paper
TI - Imperfections and Possible Advances in Analog Summing Amplifier Design
SP - EP -
AU - Kovinic, Milan
AU - Drincic, Dragan
AU - Jankovic, Sasha
PY - 2008
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 2008 TY - paper
TI - Imperfections and Possible Advances in Analog Summing Amplifier Design
SP - EP -
AU - Kovinic, Milan
AU - Drincic, Dragan
AU - Jankovic, Sasha
PY - 2008
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 2008
AB - The major requirement in the design of the analogue summing amplifier is the quality of the summing bus. The key problem in most common designs is the artefact of summing bus impedance, which cannot be considered as true physical impedance, because it has been generated by negative feedback. The loop gain of the amplifier used will limit the performance at higher audio frequencies where the loop gain is lower, increasing the channels cross talk. The inevitable effect of heavy feedback is the increased susceptibility of the amplifier to oscillate as well as sensitivity to RFI. The advanced solution, presented in this work, could be seen in the usage of the transistor common-base pair (CB-CB) configuration as a summing bus. The CB pair offers inherent low-input impedance, low-noise, very good frequency response, and, very importantly, makes the application of total feedback not necessarily.