| 摘要 |
PURPOSE: An analog-to-digital converter using a range-scaling method is provided to reduce the number of a reference voltage driving circuit to the half without additional correction on reference voltage using the single reference voltage. CONSTITUTION: Range scaling on the input analog signal of an ADC(Analog-to-Digital Converter) of a pipeline structure is operated using only single reference voltage. An SHA(Sample-and-Hold Amplifier) of an input terminal of the ADC is removed from the input terminal of the ADC. The input analog signal is directly applied on the sampling capacitor of the FLASH1 ADC of input terminal and the MDAC1 of the input terminal. The sampling switch of the FLASH1 ADC and MDAC1 comprise a gate - bootstrapping circuit. The FLASH1 ADC is formed using only a plurality of latches. |
