| 摘要 |
PURPOSE: An analog-digital converter using a digital range detector circuit is provided to sense an input voltage range by using a digital range detector terminal circuit. CONSTITUTION: A voltage divider(100) divides a reference voltage by using a resistor. A range detection/clock divider(200) generates a clock signal within a corresponding range. A first shear amplifier(300) amplifies two differential reference voltages and two differential analog signals. A second shear amplifier(400) amplifies two output signals from the first shear amplifier. A comparator(600) synchronizes two amplification signals based on a clock source. A bubble error corrector(700) corrects a bubble error generated in a comparator. An encoder(800) converts the corrected output signal to a digital code. A synchronization unit(900) synchronizes the output signal of the encoder according to a main clock signal.
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