This work concerns the development of integrated GHz-speed transient waveform capture and digitization electronics. The capture of brief, fast analog transients is important in many applications. Dr. Kleinfelder’s invented the ATWR / ATWD technique of very fast waveform capture and first published it in his Masters Thesis (U.C. Berkeley, 1991). In his thesis, he demonstrated 5 GHz waveform capture in a chip containing 4 channels of 512 samples per channel. Later incarnations included on-chip analog to digital conversion and other unique features. The most recent version includes programmable real-time self-triggering capabilities [C55]. His circuits have been used in several major Astrophysics experiments around the world, including having been buried a km deep under the south pole at the Amanda and IceCube experiments.

Related publications:

1. •[C55] W. Huang, S.W. Chiang, S. Kleinfelder, “Waveform Digitization with Programmable Windowed Real-Time Trigger Capability,” Proceedings of the 2009 IEEE Nuclear Science Symposium, Orlando, FL, October 2009.
   

2. •[J55] Abbasi R, Ackermann M, Adams J, et al., “The IceCube data acquisition system: Signal capture, digitization and timestamping,” Nuclear Instrumentation & Methods in Physics Research, Vol 601, No. 3, pp. 294-316.
   

3. •[J41] S. Kleinfelder, “GHz Waveform Sampling and Digitization Circuit Design and Implementation,” IEEE Transactions on Nuclear Science, Vol. 50, No. 4, pages 955-962, August 2003.
   

4. •[C39] S. Kleinfelder, “A Multi-GHz, Multi-Channel Transient Waveform Digitization Integrated Circuit” Nuclear Science Symposium, 2002. Conference Record of the 2002 IEEE, 2002
   

5. •[C37] S. Kleinfelder, “Advanced Transient Waveform Digitizers,” Proceedings of the SPIE Particle Astrophysics Instrumentation, August, 2002 (invited paper).
   

6. •Stuart A. Kleinfelder, “A Multi-Gigahertz Analog Transient Waveform Recorder Integrated Circuit,” 1992, Thesis, University of California, Berkeley.