Method and apparatus for reading analog values stored in floatin

Details Method and apparatus for reading analog values stored in floatin Method and apparatus for reading analog values stored in floatin

1997-07-01

1999-06-01

Nguyen, Viet Q.

Static information storage and retrieval

Floating gate

Particular biasing

36518521, 365210, 365205, 365203, 36518503, G11C 2700

Patent

active

059093935

ABSTRACT:
This invention utilizes the small cell size of the NAND storage cell structure in an analog storage and playback device. This is achieved, in part, by using a special, zero current storage cell, in which in the read mode, the cell loading current is waveshaped to attain an optimal dynamic range and to avoid the resistive effects of series parasitic resistances of other transistors in the source node or drain node, and to avoid the transistor conductance variations of all the transistors in the read path. The loading current is waveshaped to reduce possible overshoot and settling effects to achieve the fine output voltage resolution in an optimal sensing time. Details of the method and alternate embodiments are disclosed.

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