An 8.5 mW Continuous-TimeModulator With 25 MHz Bandwidth Using Digital Background DAC Linearization to Achieve 63.5 dB SNDR and 81 dB SFDR JG Kauffman, P Witte, J Becker, M Ortmanns IEEE Journal of Solid-State Circuits 46 (12), 2869-2881, 2011 | 108 | 2011 |

A 72 dB DR, CT ΔΣ modulator using digitally estimated, auxiliary DAC linearization achieving 88 fJ/conv-step in a 25 MHz BW JG Kauffman, P Witte, M Lehmann, J Becker, Y Manoli, M Ortmanns IEEE Journal of Solid-State Circuits 49 (2), 392-404, 2013 | 76 | 2013 |

A 72dB-DR ΔΣ CT modulator using digitally estimated auxiliary DAC linearization achieving 88fJ/conv in a 25MHz BW P Witte, JG Kauffman, J Becker, Y Manoli, M Ortmanns 2012 IEEE International Solid-State Circuits Conference, 154-156, 2012 | 62 | 2012 |

An 8mW 50MS/s CT ΔΣ modulator with 81dB SFDR and digital background DAC linearization JG Kauffman, P Witte, J Becker, M Ortmanns 2011 IEEE International Solid-State Circuits Conference, 472-474, 2011 | 49 | 2011 |

A 10 MHz bandwidth, 70 dB SNDR continuous time delta-sigma modulator with digitally improved reconfigurable blocker rejection R Ritter, JG Kauffman, J Becker, M Ortmanns IEEE Journal of Solid-State Circuits 51 (3), 660-670, 2016 | 35 | 2016 |

A 0.9-V DAC-calibration-free continuous-time incremental delta–sigma modulator achieving 97-dB SFDR at 2 MS/s in 28-nm CMOS MA Mokhtar, A Abdelaal, M Sporer, J Becker, JG Kauffman, M Ortmanns IEEE Journal of Solid-State Circuits 57 (11), 3407-3417, 2022 | 19 | 2022 |

A 67dB DR 50MHz BW CT Delta Sigma modulator achieving 207 fJ/conv JG Kauffman, C Chu, J Becker, M Ortmanns 2013 IEEE Asian Solid-State Circuits Conference (A-SSCC), 401-404, 2013 | 17 | 2013 |

Apparatus for overload recovery of an integrator in a sigma-delta modulator JG Kauffman, K Dufrene US Patent 9,680,496, 2017 | 16 | 2017 |

A direct digitizing chopped neural recorder using a body-induced offset based DC servo loop M Sporer, S Reich, JG Kauffman, M Ortmanns IEEE Transactions on Biomedical Circuits and Systems 16 (3), 409-418, 2022 | 11 | 2022 |

Sigma-delta analog-to-digital converter including loop filter having components for feedback digital-to-analog converter correction M Bresciani, JG Kauffman, U Schuetz, P Torta, F Conzatti US Patent 9,866,227, 2018 | 10 | 2018 |

A correlation-based background error estimation technique for bandpass Delta–Sigma ADC DACs P Witte, JG Kauffman, J Becker, M Ortmanns IEEE Transactions on Circuits and Systems II: Express Briefs 58 (11), 748-752, 2011 | 9 | 2011 |

FIR DACs in CT incremental delta-sigma modulators MA Mokhtar, P Vogelmann, A Abdelaal, JG Kauffman, M Ortmanns 2020 IEEE International Symposium on Circuits and Systems (ISCAS), 1-5, 2020 | 8 | 2020 |

A DAC cell with improved ISI and noise performance using native switching for multi-bit CT Delta Sigma modulators JG Kauffman, R Ritter, C Chu, M Ortmanns 2013 IEEE International Symposium on Circuits and Systems (ISCAS), 574-577, 2013 | 7 | 2013 |

Minimizing signal-dependent residue in CT pipelined ADCs J Ungethüm, JG Kauffman, M Ortmanns 2021 IEEE International Midwest Symposium on Circuits and Systems (MWSCAS …, 2021 | 6 | 2021 |

A 0.9-V calibration-free 97dB-SFDR 2-MS/s continuous time incremental delta-sigma ADC utilizing variable bit width quantizer in 28nm CMOS MA Mokhtar, A Abdelaal, M Sporer, J Becker, JG Kauffman, M Ortmanns 2021 IEEE Custom Integrated Circuits Conference (CICC), 1-2, 2021 | 6 | 2021 |

Analysis and design of high speed/high linearity continuous time delta-sigma modulator C Chu, T Brückner, JG Kauffman, J Anders, J Becker, M Ortmanns 2013 IEEE International Symposium on Circuits and Systems (ISCAS), 1268-1271, 2013 | 6 | 2013 |

A multi-mode GSM to LTE100 ADC J Sauerbrey, JSP Garcia, U Schütz, H Khushk, JG Kauffman ESSCIRC 2018-IEEE 44th European Solid State Circuits Conference (ESSCIRC …, 2018 | 5 | 2018 |

Bitwise ELD Compensation in Δ∑ Modulators M Pietzko, J Ungethüm, JG Kauffman, Q Li, M Ortmanns 2022 IEEE International Symposium on Circuits and Systems (ISCAS), 566-570, 2022 | 4 | 2022 |

Influence of excess loop delay on the STF of continuous-time delta-sigma modulators M Pietzko, J Wagner, A Abdelaal, JG Kauffman, M Ortmanns 2021 IEEE International Symposium on Circuits and Systems (ISCAS), 1-5, 2021 | 4 | 2021 |

Apparatus for correcting linearity of a digital-to-analog converter JG Kauffman, U Schuetz US Patent 10,243,574, 2019 | 4 | 2019 |