Papers
2011
4.
P. Witte,
J. G. Kauffman,
J. Becker and
M. Ortmanns,
"Correlation Based Background Error Estimation Technique for Bandpass Delta-Sigma ADC DACs",
IEEE Trans. Circuits Syst. II, Express Briefs,
Nov.
2011.
3.
C. Chu,
J. G. Kauffman,
S. Anis and
M. Ortmanns,
"A 4-bit, 500M/s Flash Quantizer Using an Auto-Zeroing Offset Compensated Comparator in 250nm SiGe",
Kleinheubacher Tagung, Miltenberg, Germany,
Sep.
2011.
2.
P. Witte,
J. G. Kauffman,
J. Becker and
M. Ortmanns,
"A digital background correction for DAC nonlinearities in lowpass and bandpass delta-sigma modulators - theory and implementation",
The 9th Int. Conf. on Sampling Theory and Applications (SampTA), Singapore,
May
2011.
1.
J. G. Kauffman,
P. Witte,
J. Becker and
M. Ortmanns,
"An 8mW 50MS/s CT ΔΣ Modulator with 81dB SFDR and Digital Background DAC Linearization",
IEEE Int. Conf. on Solid State Circuits (ISSCC), San Francisco, USA,
Feb.
2011.
Patents
- John G. Kauffman
Low supply class AB output amplifier
[US9859856B1], Intel IP Corp.
- Marco Bresciani, John G. Kauffman, Udo Schuetz, Patrick Torta, Francesco Conzatti
Sigma-delta analog-to-digital converter including loop filter having components for feedback digital-to-analog converter correction
[US9866227B1]
2016
- John G. Kauffman, Krzysztof Dufrene
Apparatus for overload recovery of an integrator in a sigma-delta modulator
[US9680496B2], Intel IP Corp.
2015
- John G. Kauffman, Udo Schuetz
Single amplifer bi-quad sigma-delta modulator
[US9559719B1], Intel IP Corp.
2015
- John G. Kauffman, Udo Schuetz
Apparatus for correcting linearity of a digital-to-analog converter
[US9509326B1], Intel IP Corp.
2015