DocumentCode :
1159480
Title :
A Circuit with Logarithmic Transfer Response over 9 Decades
Author :
Gibbons, J.E. ; Horn, H.S.
Volume :
11
Issue :
3
fYear :
1964
fDate :
9/1/1964 12:00:00 AM
Firstpage :
378
Lastpage :
384
Abstract :
The short-circuit collector current of many silicon transistors is proportional to the exponential of the emitter-base voltage over 9 decades of collector current ( 
to 
). Such a transistor may be connected as a three-terminal feedback network in an operational amplifier to obtain accurate logarithmic transfer response over a dynamic range of 9 decades.
to ). Such a transistor may be connected as a three-terminal feedback network in an operational amplifier to obtain accurate logarithmic transfer response over a dynamic range of 9 decades.Keywords :
Analog computers; Channel bank filters; Circuits; Dynamic range; Feedback; Forward contracts; Operational amplifiers; Pulse amplifiers; Silicon; Voltage;
fLanguage :
English
Journal_Title :
Circuit Theory, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9324
Type :
jour
DOI :
10.1109/TCT.1964.1082336
Filename :
1082336
Link To Document :
