Title :
A practical method for digitally calibrating gain error of integrated ADCs
Author :
Rongbin Hu ; Yu Wen ; Xiaoying Zhang
Author_Institution :
Sci. & Technol. on Analog Integrated Circuit Lab., Chongqing, China
Abstract :
A kind of practical method for digitally gain calibration of ADCs is proposed. The method is given in details as well as the architecture and circuit. The method has been successfully applied on a two-channel 8-bit time-interleaved ADC. Simulation shows that the gain of the 8-bit ADC can be adjusted with a step of 0.012dB and a full scale range of about 3dB. The measurement shows that the 8-bit ADC has a SNR of 37dB and 45dB before and after calibration, respectively.
Keywords :
analogue-digital conversion; calibration; measurement errors; digitally calibration gain error; gain 0.012 dB; integrated ADC; noise figure 37 dB; noise figure 45 dB; two-channel time-interleaved ADC; word length 8 bit; Signal to noise ratio; ADC; DAC; LSB; gain calibration; time interleaved;
Conference_Titel :
Electronics, Computer and Applications, 2014 IEEE Workshop on
Conference_Location :
Ottawa, ON
DOI :
10.1109/IWECA.2014.6845545
