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High solution A=D converter with analog loop filter - has inner A=D converter operated with increased scanning frequency
High solution A=D converter with analog loop filter - has inner A=D converter operated with increased scanning frequency
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机译:具有模拟环路滤波器的高分辨率A = D转换器-内部A = D转换器以提高的扫描频率运行
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摘要
The fed back, interpolative A/D converter has an analog loop filter (Hcs), a coupled inner A/D converter, and a following D/A converter. The latter output signal is fed back to the loop filter input. There is an overscanning and a decimation filter (Hlz) behind the A/D converter, and reduction to a specified scanning rate. The inner A/D converter is operated with an increased scanning frequency, and the converted signal value is transmitted to the D/A converter with the next cycle of the additional overscanning rate. Pref. the additional signal values are stored in a buffer register, whose read-out cancels the additional overscanning. ADVANTAGE - 18 bits exceeding word length.
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