1. Y2K Floating-Gate Workshop
Floating-Gate Devices: They are not just for Digital Memories Anymore
Dr. Paul Hasler
Georgia Institute of Technology
ICE lab

2. Workshop Topics Thursday: Floating-Gate Devices / Scaling
Friday: Floating-Gate Circuits, Epots
Saturday: Programmable Filters, Translinear Circuits, Log-Domain Circuits
Monday: Floating-Gate Signal Processing/ Learning

3. Overview of Floating-Gate Devices
Information Storage
Floating-Gate Transistor
Modifying Floating-Gate
Charge
UV photo-injection
Electron tunneling
Hot-electron injection

4. World of Floating-Gate Circuits

5. E-Pots
R. Harrison, A. Bragg, and P. Hasler
More info

6. Capacitor-Based Circuits
Resistor-Based Design
Capacitor-Based Design
Resistors and Inductors define the
circuit dynamics
Capacitors and Inductors define the
circuit dynamics
Capacitors are the natural elements
on silicon ICs

7. Fourier-Based Programmable Filters
Vin
Bandpass Filters,
Exp Spaced
(Hard in DSP)
W11
W12
W13
W14
W15
W1n
W21
W22
W23
W24
W25
W2n
Iout1
Iout2
Programmable
Analog Filter
C4 filters

8. Programmable Analog DFT1 10 10
Individua
l Bandpa ss
Output
A-rms)
Filter Outp ut -1 10 10 m
Ampli
er (
Filt
tude o
urier -1 10 10 -2
f Band
of Fo
itude
pass F
Fourier
Filter
Output
ilter
Ampl (V
Output -2 10 -3 10
-rms ) -3 10 -4 10 10 10 1 10 2 10 3 10 4 10 5
Frequen
cy (Hz)

9. Single-Transistor pFET Synapses
Why Synapses?
Two key operations:
1. Input x stored W
2. dW/dt = correlation of the
f( input , a given error signal)

10. Drain-Gate Dynamic Equation
W = 1 -hE[Vg Vd] - eW

11. Signal Processing Chip Constraints
Uses an
adaptive
floating-gate
algorithm for
ICA

12. Floating-Gate pFET Device
Three Classes of Applications
1. Analog or Digital Memory
2. Floating-Gate Circuits
3. Adaptive Circuits