Current memory for sampling analog currents

Details Current memory for sampling analog currents Current memory for sampling analog currents

1997-06-30

1998-08-25

Nelms, David C.

Static information storage and retrieval

Analog storage systems

365233, G11C 2700, G11C 2702

Patent

active

057989605

ABSTRACT:
A current memory for sampled analogue currents comprises a first, coarse, current memory cell and a second, fine, current memory cell. The first current memory cell senses the input current during a first portion of the first period of the clock cycle, while the second current memory cell senses the input current plus the current produced by the first current memory cell during a second portion of the first period of the clock cycle. The combined outputs of the first and second current memory cells is available during a second period of the clock cycle. The first current memory further comprises a voltage amplifier which increases the effective g.sub.m of a memory transistor in the first memory cell and holds the potential at the junction of the drain electrodes of the memory transistors in each of the memory cells close to a virtual earth.

REFERENCES:
patent: 5400273 (1995-03-01), Hughes et al.
patent: 5666303 (1997-09-01), Hughes et al.

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