Precision_level_detector_for_photodiode

Published:2009/7/24 4:19:00 Author:Jessie | From:SeekIC

Fig. 15-4 This circuit is similar to that of Fig. 15-3, except that the Fig. 15-4 circuit is independent of supply voltage. D1 is a temperature- compensate d reference diode with a 1.23-V breakdown voltage. D1 acts as a regulator and delivers a stable voltage to the comparator. The circuit operates with a 5-V supply and is suitable for TTL. National Semiconductor, Linear Applications Handbook 1991 p, 130.



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