DocumentCode :
887436
Title :
A new interface amplifier concept for fast D/A converters
Author :
Knorr, Siegfried G. ; Bakhtiar, Farhad Haghighi
Volume :
14
Issue :
4
fYear :
1979
Firstpage :
734
Lastpage :
741
Abstract :
A new interface amplifier is proposed which can tolerate an appreciable capacitive loading without affecting the settling time. It utilizes a low loop-gain approach with high internal bandwidth and excellent open-loop gain linearity. Most importantly, the amplifier is compensated at the input node rather than somewhat internally. As a result, the amplifier overdrive also can be eliminated, provided that the rise and fall times of the converter´s output current stay within prescribed limits. Contrary to the present high-speed D/A converter realizations, in this application only a low-current, low-power D/A converter is required. With an input capacitance of 500 pF and a load capacitance of 12 pF, the measured settling time is less than 70 ns to within /spl plusmn/0.05 percent for output-signal changes of /spl plusmn/10 V.
Keywords :
Amplifiers; Digital-analogue conversion; amplifiers; digital-analogue conversion; Bandwidth; Capacitance; High speed optical techniques; Laboratories; Linearity; Operational amplifiers; Optical amplifiers; Optical devices; Physics; Semiconductor devices;
fLanguage :
English
Journal_Title :
Solid-State Circuits, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9200
Type :
jour
DOI :
10.1109/JSSC.1979.1051252
Filename :
1051252
Link To Document :
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