Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Converting – per se – of an ac input to corresponding dc at an...
Patent
1992-01-30
1997-12-30
Westin, Edward P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Converting, per se, of an ac input to corresponding dc at an...
327 89, H03K 190948, G06F 1518
Patent
active
057040141
ABSTRACT:
A cell of MOS transistors for converting a voltage into a current for forming synapses of neural nets, in particular for converting the difference between an input voltage (V.sub.IN) and a voltage (V.sub.W) for weighting the synapse into a current, realized by means of a differential stage comprising a first transistor (M1) operating as a current generator, in which a first and a second branch in parallel end, which branches respectively comprise a second (M2) and a third (M3) push-pull connected transistor, to the gate regions of which the input voltage (V.sub.IN) and the voltage (V.sub.W) for weighting the synapse, and to which a fourth (M4) and a fifth (M5) transistor are respectively connected in series, in which the fourth (M4) and the fifth (M5) transistor are P-MOS transistors having their gate regions short-circuited and said fourth (M4) P-MOS transistor is connected as a diode, and in which the output current (I.sub.OUT) is drawn from the node (N) that connects said third (M3) and said fifth (M5) transistors inserted in series in said second branch of the circuit and a capacitor (c) is connected to the gate region of said third (M3) transistor to store the voltage (V.sub.W) for weighting the synapse applied to the circuit.
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Marotta Giulio
Pasero Eros
Donaldson Richard L.
Kempler William B.
Santamauro Jon
Texas Instruments Incorporated
Westin Edward P.
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