Abstract:This paper presents a new background calibration technique for pipelined ADCs by means of slow high accurate ADC (SHADC). Errors due to finite and nonlinear gain of inter-stage operational amplifier are calibrated. Correction coefficients are estimated by using the well-known LMS algorithm. Obtained results from simulation of a 13bit 1.5bit/stage pipelined ADC behavioral model reveals the effectiveness of the proposed technique to calibrate the mentioned errors. The ADC achieves a DNL of -0.8 LSB from -47.03 L… Show more
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