Adaptive Floating-Gate Circuit Enabled Large-Scale FPAA

We present a large-scale field programmable analog array that enables floating-gate (FG) adaptive circuits using FG-based switch technology. We present a novel architecture technology that enables switch routing with FG elements for signals resulting from high voltage adapting FG elements. We present careful analysis and characterization of the FG structure, including programming ranges, electron tunneling paths, to show the indirect programming structure involving an nFET device can handle the signals. We present the experimental data (350-nm commercial CMOS process) for a single-transistor adaptive structure, for a compiled autozeroing amplifier, and for multiple adaptive FG circuits.

[1]  David V. Anderson,et al.  An analog programmable multi-dimensional radial basis function based classifier , 2007, 2007 IFIP International Conference on Very Large Scale Integration.

[2]  Massimo A. Sivilotti,et al.  Wiring considerations in analog VLSI systems, with application to field-programmable networks , 1992 .

[3]  Paul Hasler,et al.  An Autozeroing Floating-Gate Amplifier , 2001 .

[4]  David V. Anderson,et al.  Field-Programmable Analog Arrays: A Floating-Gate Approach , 2002, FPL.

[5]  Paul Hasler,et al.  Indirect Programming of Floating-Gate Transistors , 2007, IEEE Trans. Circuits Syst. I Regul. Pap..

[6]  E.K.F. Lee,et al.  A transconductor-based field-programmable analog array , 1995, Proceedings ISSCC '95 - International Solid-State Circuits Conference.

[7]  Miguel Figueroa,et al.  Field-Programmable Learning Arrays , 2002, NIPS.

[8]  John Lazzaro,et al.  Winner-Take-All Networks of O(N) Complexity , 1988, NIPS.

[9]  E.K.F. Lee,et al.  A CMOS field-programmable analog array , 1991 .

[10]  Paul Hasler,et al.  Above Threshold pFET InjectionModeling intended for ProgrammingFloating-Gate Systems , 2007, 2007 IEEE International Symposium on Circuits and Systems.

[11]  Paul E. Hasler,et al.  An analog floating-gate node for Supervised learning , 2005, IEEE Transactions on Circuits and Systems I: Regular Papers.

[12]  Arindam Basu,et al.  A large-scale Reconfigurable Smart Sensory Chip , 2009, 2009 IEEE International Symposium on Circuits and Systems.

[13]  Paul E. Hasler,et al.  Floating Gate-Based Field Programmable Mixed-Signal Array , 2013, IEEE Transactions on Very Large Scale Integration (VLSI) Systems.

[14]  Christopher M. Twigg,et al.  Programmable Conductance Switches for FPAAs , 2007, 2007 IEEE International Symposium on Circuits and Systems.

[15]  Christopher M. Twigg,et al.  Programmable Floating Gate FPAA Switches Are Not Dead Weight , 2007, 2007 IEEE International Symposium on Circuits and Systems.

[16]  Arindam Basu,et al.  A Fully Integrated Architecture for Fast and Accurate Programming of Floating Gates Over Six Decades of Current , 2011, IEEE Transactions on Very Large Scale Integration (VLSI) Systems.

[17]  E. Sanchez-Sinencio,et al.  A current-mode based field programmable analog array architecture for signal processing applications , 1998, Proceedings of the IEEE 1998 Custom Integrated Circuits Conference (Cat. No.98CH36143).

[18]  David V. Anderson,et al.  Large-scale field-programmable analog arrays for analog signal processing , 2005, IEEE Transactions on Circuits and Systems I: Regular Papers.

[19]  Marek Wojcikowski,et al.  A field programmable analog array for CMOS continuous-time OTA-C filter applications , 2002 .

[20]  Paul E. Hasler,et al.  Adaptive circuits using pFET floating-gate devices , 1999, Proceedings 20th Anniversary Conference on Advanced Research in VLSI.

[21]  Paul E. Hasler,et al.  Floating gate synapses with spike time dependent plasticity , 2010, Proceedings of 2010 IEEE International Symposium on Circuits and Systems.

[22]  Paul E. Hasler,et al.  A Digitally Enhanced Dynamically Reconfigurable Analog Platform for Low-Power Signal Processing , 2012, IEEE Journal of Solid-State Circuits.

[23]  Paul E. Hasler,et al.  Single transistor learning synapse with long term storage , 1995, Proceedings of ISCAS'95 - International Symposium on Circuits and Systems.

[24]  Christopher M. Twigg,et al.  A Floating-Gate-Based Programmable CMOS Reference , 2008, IEEE Transactions on Circuits and Systems I: Regular Papers.

[25]  G.E.R. Cowan,et al.  A VLSI analog computer/digital computer accelerator , 2006, IEEE Journal of Solid-State Circuits.

[26]  Christopher M. Twigg,et al.  A Floating-Gate-Based Field-Programmable Analog Array , 2010, IEEE Journal of Solid-State Circuits.

[27]  David V. Anderson,et al.  An Analog Programmable Multidimensional Radial Basis Function Based Classifier , 2007, IEEE Transactions on Circuits and Systems I: Regular Papers.

[28]  Paul Hasler,et al.  Continuous-time feedback in floating-gate MOS circuits , 1998, ISCAS '98. Proceedings of the 1998 IEEE International Symposium on Circuits and Systems (Cat. No.98CH36187).