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Charge-sharing and charge-redistribution DAC and method for successive approximation analog-to-digital converters
Charge-sharing and charge-redistribution DAC and method for successive approximation analog-to-digital converters
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机译:电荷共享和电荷分配DAC及逐次逼近模数转换器的方法
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摘要
A hybrid digital-to-analog converter including a charge-sharing digital-to-analog converter and a charge redistribution digital-to-analog converter is provided. The charge-sharing digital-to-analog converter is configured to receive a digital input signal having multiple bits. The bits include a most-significant-bit and a least-significant-bit. The charge-sharing digital-to-analog converter is configured to convert the most-significant-bit to provide a first portion of an analog signal and selectively share charges of first capacitors during a successive approximation of the most-significant-bit. The charge redistribution digital-to-analog converter is configured to convert the least-significant-bit to provide a second portion of the analog signal. The charge redistribution digital-to-analog converter performs charge redistribution by selectively connecting second capacitors to receive reference voltages during a successive approximation of the least-significant-bit.
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