摘要
A new temperature compensation technique for ring-oscillator-based ADCs is proposed. This technique employs a novelcfixed-number-based algorithm and CTAT current biasing technology to compensate the temperature-dependent variations of the output, thus eliminating the need for digital calibrations. Simulation results prove that, with the proposed technique,the resolution in the temperature range of 0 to 100℃ can reach a 2mV quantization bin size with an input voltage span of 120mV at the sampling frequency of fs = 100kHz.
提出了一种对环振型ADC进行温度补偿的新型技术.该技术采用一种基于固定数的计数算法以及CTAT电流偏置技术来补偿温度对输出的影响,不需要任何额外的校准机制.模拟结果证明,通过采用这种技术,在考虑了0到100℃的温度变化的条件下,环振型ADC的分辨率可以达到2 mV/LSB(输入电压的范围为120 mV,采样频率为100kHz) .
