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Self-adaptive analog-to-digital converter
申请号	US15700957	申请日	2017-09-11	公开(公告)号	US09923569B1	公开(公告)日	2018-03-20
申请人	Analog Devices, Inc.;			发明人	Baozhen Chen; Lalinda D. Fernando; Frank M. Yaul;
摘要	A self-adaptive SAR ADC techniques that can increase speed and/or decrease its power consumption. In some example approaches, one or more bits from a conversion of a previous sample of an analog input signal can be preloaded onto a DAC circuit of the ADC. If the preloaded bits are determined to be acceptable, bit trials on the current sample can be performed to determine the remaining bits. If not acceptable, the ADC can discard the preloaded bits and perform bit trials on all of the bits. The self-adaptive SAR ADC can include a control loop to adjust, e.g., increase or decrease, the number of bits that are preloaded in a subsequent bit trial using historical data.
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