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1. 发明授权

US07679406B2 Comparator having a preamplifier with power saved while latching data 失效
标题翻译：具有前置放大器的比较器，在锁存数据的同时保存功率
公开(公告)号：US07679406B2
公开(公告)日：2010-03-16
申请号：US11945646
申请日：2007-11-27
申请人： Katuyoshi Yagi
发明人： Katuyoshi Yagi
IPC分类号： G01C7/00
CPC分类号： H03F3/45192 , H03F2203/45028 , H03F2203/45466 , H03K5/2481 , H03K5/249
摘要： In a comparator, a differential amplifier has a pair of transistors receiving a signal to be compared for differential amplification, and a current mirror load circuit for outputting a differential output signal in accordance with the relationship in magnitude of the signal to be compared. A latch circuit has inversion amplifiers for amplifying the differential output signal. One inversion amplifier has its input interconnected to an output of the other inversion amplifier and vice versa. The comparator still further includes a transistor for equalizing signals of the differential amplifier, a transistor for enabling the inversion amplifiers to be active, and a constant current source for reducing a current flowing from a supply voltage to the ground when the inversion amplifiers are active.
摘要翻译：在比较器中，差分放大器具有一对晶体管，其接收要比较差分放大的信号;以及电流反射镜负载电路，用于根据要比较的信号的大小关系输出差分输出信号。锁存电路具有放大差分输出信号的反相放大器。一个反相放大器的输入互连到另一个反相放大器的输出端，反之亦然。比较器还包括用于均衡差分放大器的信号的晶体管，用于使反相放大器有效的晶体管，以及用于当反相放大器有效时减小从电源电压流向地的电流的恒流源。

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