| 摘要 |
In a signal processing apparatus, an analog signal inputted from, for example, a sensor is amplified by a amplifying circuit and is supplied to N comparing circuits (N is an integer equal to or more than 2). Each of the N comparing circuits is associated with a reference voltage and generates a comparison resultant signal based on the reference voltage in response to the amplified analog signal. N pulse generating circuits are provided for the N comparing circuits, respectively, and each of the N pulse generating circuits generates first and second pulse signals which indicate level transitions of the comparison resultant signal with respect to the corresponding reference voltage. A digital signal generating circuit composed of a flip-flop circuit generates a digital signal in response to the first and second pulse signals from each of the N pulse generating circuits.
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