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Apparatus for improvement of the speed of convergence to sub- least- significant-bit accuracy and precision in a digital signal averager and method of use
Apparatus for improvement of the speed of convergence to sub- least- significant-bit accuracy and precision in a digital signal averager and method of use
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机译:用于提高数字信号平均器中收敛到次最低有效位精度和精度的速度的设备和使用方法
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摘要
A method for improving the speed of convergence to sub-least- significant-bit accuracy and precision in a digital signal averager when the measurements are averaged over many samples where the noise inherent in the signal is not large compared to 1 LSB. A slider offset circuit implements the method which adds offsets to an analog input signal acquired from an analog sensor. The slider offset circuit compensates for limitations in the resolution of an analog-to-digital converter by adding a sub-least-significant-bit offset to the input signal. Similarly, the slider offset circuit compensates for the differential non- linearity using a Gatti offset which are whole number multiples of the average voltage bin width. Speed of convergence to sub-LSB accuracy is further improved by employing non-consecutive increments in the two sliders.
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