Sensing circuit

Details Sensing circuit Sensing circuit

2007-01-30

2007-01-30

Le, Thong Q. (Department: 2827)

Static information storage and retrieval

Floating gate

Particular biasing

C365S207000

Reexamination Certificate

active

11061104

ABSTRACT:
A sensing circuit (120) for sensing currents, including: a measure circuit branch (132i), having a measure node for receiving an input current (Ic) to be sensed, for converting the input current into a corresponding input voltage (V−); at least one comparison circuit branch (132o), having a comparison node for receiving a comparison current (Igs), for converting the comparison current into a corresponding comparison voltage (V+); and at least one voltage comparator (140) for comparing the input and comparison voltages, and a comparison current generating circuit (N3s,135; N3s,135′; N3s,135″) for generating the comparison current based on a reference current (Ir). The comparison current generating circuit includes at least one voltage generator (135; 135′; 135″). A memory device using the sensing circuit and a method are also provided.

REFERENCES:
patent: 5255233 (1993-10-01), Izumi
patent: 5422854 (1995-06-01), Hirano et al.
patent: 2003/0016572 (2003-01-01), Pascucci
patent: 2004/0062116 (2004-04-01), Takano et al.
patent: 2004/0228162 (2004-11-01), Pasotti et al.
patent: 0 814 484 (1997-12-01), None
patent: 2003-173691 (2003-06-01), None
Annex to European Search Report dated Jul. 12, 2004 for European Application No. 04290449.0.

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