Digitally-Based Calibration Techniques for RF Sigma Delta Modulators Chapter uri icon

abstract

  • A calibration technique for Noise Transfer Function (NTF) optimization of Continuous-Time Sigma Delta (CT $$ Upsigma Updelta $$ ) modulators is presented. This technique employs a test tone applied at the input of the quantizer to evaluate the noise transfer function of the $$ Upsigma Updelta $$ modulator using the capabilities of the Digital Signal Processing (DSP) platform usually available in mixed-mode systems. Once the modulators output bit stream is captured, necessary information to generate the control signals to tune the ADC parameters for best Signal-to-Quantization Noise Ratio (SQNR) performance is extracted via an LMS software-based algorithm. This approach uses a simple test signature to measure both in-band and out-of-band loop behavior.

author list (cited authors)

  • Silva-Martinez, J., Silva-Rivas, F., Lu, C., Mincey, J., & Hoyos, S.

citation count

  • 0

complete list of authors

  • Silva-Martinez, Jose||Silva-Rivas, Fabian||Lu, Cho-Ying||Mincey, John||Hoyos, Sebastian

editor list (cited editors)

  • Carbone, P., Kiaei, S., & Xu, F.

Book Title

  • DESIGN, MODELING AND TESTING OF DATA CONVERTERS

publication date

  • October 2014