Programmable vector-matrix multipliers for artificial neural networks

Abstract

For the hyblid digital-analog approach, rhom in Figure 1. the --log loultiplier w e i g h t valves are generated from digical words stored in digital memory. The analog voltages are X-Y addrossed to rhe nulciplier sites using decoding circuitry and are dynsmically stored on capaciCorr aL the gatel of WOSFET conductance elements. The analog voltages are periodicelly refreshed from rhe vsighr values stored in the digital memory.