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发明公开
CN107800412A 内置阈值比较器 审中-实审

内置阈值比较器
摘要：
本发明公开了内置阈值比较器，其中比较器500包括耦合到第一信号输入端INP和第一参考输入端REFM的第一输入级510，其中第一输入级510耦合在第一节点N51和第二节点N52之间。第二输入级512耦合到第二信号输入端INM和第二参考输入端REFP，其中第二输入级512耦合在第三节点N53和第二节点N52之间。输出级响应于第一输入信号和第二输入信号产生至少一个输出信号。第一开关电路Q55被耦合在第一节点N51和输出级之间。第一开关电路Q55用于响应于复位信号将第一节点N51耦合到第四节点N56。第二开关电路Q56耦合在第三N53节点和输出级之间。第二开关电路Q56用于响应于复位信号将第三节点N53耦合到第五节点N57。
摘要（英）：

A comparator (500) includes a first input stage (510) coupled to a first signal input (INP) and a first reference input (REFM), wherein the first input stage is coupled between a first node N51 and asecond node N52. A second input stage 512 is coupled to a second signal input INM and a second reference input REFP, wherein the second input stage is coupled between a third node N53 and the second node. An output stage generates at least one output signal in response to the first and second input signals. First switching circuitry Q55 is coupled between the first node and the output stage. The first switching circuitry is for coupling the first node to a fourth node N56 in response to a reset signal. Second switching circuitry Q56 is coupled between the third node and the output stage. The second switching circuitry is for coupling the third node to a fifth node N57 in response to the reset signal.

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