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Analog-to-digital conversion method and apparatus with a controlled switch for high-speed conversion
Analog-to-digital conversion method and apparatus with a controlled switch for high-speed conversion
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机译:具有用于高速转换的受控开关的模数转换方法和装置
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摘要
An analog-to-digital converter receiving an analog signal and producing a digital output signal corresponding to a value of the analog signal includes a plurality of sets each having a plurality of sample-and- hold circuits having inputs connected in parallel with each other, an analog switch responsive to a control signal to apply the input analog signal to the junction of the parallel connection of the plurality of sample-and-hold circuits, and a plurality of encoders respectively connected to outputs of the plurality of sets to convert output signals of the plurality of sample-and-hold circuits into a binary signal. Each of the plurality of sample-and-hold circuits includes a series connection of a second analog switch and a capacitor and the analog-to-digital converter further includes comparators connected to outputs of the plurality of sample-and-hold circuits. Advantageously, errors in timing for sampling conducted in the plurality of sample-and-hold circuits can be eliminated.
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