ac_coupled_comparator

Published:2009/7/24 4:24:00 Author:Jessie | From:SeekIC

Fig. 15-10 This circuit also buffers the input of an LM106 with an L102 voltage follower. The LM106 draws an input current that is twice the specified bias current when the signal is above the comparison threshold. This asymmetrical current drain charges a coupling capacitor that is connected directly to the LM106 input and it can produce an error. The problem is eliminated with a buffer because the input current to the LM106 is both low and constant. National Semiconductor. Linear Applications Handbook 1991 p. 1190.



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