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LM2904做迟滞比较器时,输出VOL无法满足规格书20MV指标

Other Parts Discussed in Thread: LM2904

大家好:

       1、本人在使用LM2904做迟滞比较器时,出现输出VOL无法满足规格书20mV,实际输出为120mV,且随着电源电压增大而增大,影响迟滞低门限值的精度;

       2、测试时将R16拆除,不做迟滞时,输出VOL满足规格书20mV指标;

       3、请大家帮忙指导一下输出偏差的原因;