Cambridge, Massachusetts Analog Logic Ben Vigoda

2 Analog Logic Combine Efficiency of Analog Device Physics –10-100x Less Power –10x Less Area / Cost –Higher Performance With Scalability of Computing Digitally –Modular, Hierarchical for Automated Design Synthesis –Relatively Invariant to Fabrication Process

3 From Digital Logic Gates to Analog Logic Gates inout Digital Inverter Probability Inverter in, xout, y Digital XOR in out Probabilistic XOR

Filtering and Control Analog Logic: implement many statistical estimation and signal processing algorithms natively using analog “gates” Compute probabilities for millions of variables at extremely high speed and with low power. Demodulation, Equalization

5 Test results from our first IC: Transfer Function of 2-Input SoftXOR Analog Logic Gate Theory Measurement

6 Analog Logic Receiver Front-end – Don’t spend energy amplifying interference  Eliminate Analog-to-Digital Converter (ADC) – Don’t convert interference into bits that we throw away later in base-band  Base-band – Analog Logic is 10x less power/area compared to digital implementations  Overall Analog Logic receiver – Same analog input and digital output as conventional receiver – Integrate ADC, processing, and gain throughout signal chain

7 Wideband Front-end Acquisition and Tracking Circuit Analog Logic “Noise Lock Loop”: –Tx: Generate wideband waveforms –Rx: Amplify wide-band waveforms, while rejecting interference Applications in UWB, Radar, and GPS Synchronization of Pseudo-Random Signals by Forward-Only Message Passing with Application to Electronic Circuits. IEEE Transactions on Information Theory, August Vigoda, Gershenfeld, et al.