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本文堤出一种连续式非线性Ａ／Ｄ转换器。其电路简单，线性比精度较高，用于铂 电阻温度传感器．在－２００℃到 ＋６５０℃的全温度范围内线性化误差为０．０５８％． 按上述原理．采用 ＣＭＯＳ大规模集成电路 Ａ／Ｄ转换器研制的铂电阻数字温度计， 在上述温度范围内．实测精度为０．１２％． 本文论述了电路最佳参数Ｉ．Ｋ的选泽方法．给出采用小型计算帆（ＰＣ－１５００） 求最佳参数 Ｉ．Ｋ的两个实用程序。可根据要求，在任意温度范围内．求出最佳的 Ｉ．Ｋ值和与之对应的误差．本文还提出进一步提高线性比精度的方法．以扩大应用 范围．
This article embankment out of a continuous non-linear A / D converter. The circuit is simple, high linear accuracy, for platinum resistance temperature sensor. The linearization error was 0.058% over the full temperature range of -200 ° C to + 650 ° C. According to the above principle. The use of CMOS LSI A / D converter developed platinum resistance digital thermometer, in the above temperature range. The measured accuracy is 0.12%. This article discusses the best circuit parameters I. K’s election Ze method. The optimal parameter I is given by using small calculation sail (PC-1500). K’s two utilities. Available on request, in any temperature range. Find the best I. K value and the corresponding error. This paper also proposed to further improve the accuracy of linear ratio method. To expand the scope of application.