专利名称：Comparator with offset voltage发明人：Jung-Bong Lee申请号：US10201788申请日：20020725
公开号：US20020180492A1公开日：20021205
专利附图：
摘要：A comparator according to the present invention can generate an output signalof low or high level by comparing a first and second input voltages that have a commonvoltage. An input stage circuit of a comparator according to the present inventionreceives a common voltage detection signal. The common voltage is supplied with a first
offset voltage when the common voltage detection signal is on low level, and thecommon voltage is supplied with a second offset voltage when the common voltagedetection signal is on high level. Then, the input stage circuit performs amplification tooutput a voltage difference between the first input voltage and the second input voltageto the comparator. Accordingly, the comparator with offset voltage according to thepresent invention can sufficiently amplify the input signal difference of low commonvoltage by selectively applying different offset voltages to a common voltage inaccordance with the common voltage level of the input signal. The present invention canbe applied to a comparator with offset voltage and an analogue comparator having adifferential input stage.
申请人：HYUNDAI ELECTRONICS INDUSTRIES CO. LTD.
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