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具有12b和更高位分辨率的逐步近似计算法A/DS,受到比较器性能的限制。比较器的精度,响应时间,稳定性和噪声问题采用取样数据技术而大大地改进了。新A/D系统可能由并联输入的且允许任意数量的不同电压输入的比较器构成。逐步近似计算法逻辑强制输出电压从并行的DACS到等于模拟输入电压(在±1/2LSB范围内)。图1的比较器利用电器容器按比例并联不同的电压并且使它们转换成输入电荷。当总节(?)电荷的净变化为零的检测了稳定性。不同的模拟输入信号是由与比较器的自动置零时间有关的取样输入指令所确定的。采用取样操作指令,对于DACS来说,负的输入可以呈现正的.因而DACS仅需要简单的正电压参数转换成双极输入。这提供了分辨率的(?)(?)位并且消除了为必需要的参考(?)(?)器技术所固有的误差。
The step-by-step approximation algorithm A / DS with a resolution of 12b and higher is limited by the performance of the comparator. Comparator accuracy, response time, stability and noise problems using sampling data technology has greatly improved. The new A / D system may consist of comparators that are input in parallel and allow for any number of different voltage inputs. The stepwise approximation algorithm logically forces the output voltage from parallel DACS to equal the analog input voltage (within ± 1 / 2LSB). The comparator of FIG. 1 uses electrical containers to shunt different voltages in parallel and convert them into input charges. The stability was examined when the net change in charge of the total section (?) Was zero. The different analog input signals are determined by the sample input commands related to the auto-zero time of the comparator. With sampling instructions, the negative input can be positive for the DACS, so the DACS only needs a simple positive voltage to convert to a bipolar input. This provides the (?) (?) Bits of resolution and eliminates the inherent errors of the necessary reference (?) Technique.