Leakage compensation circuit

Details Leakage compensation circuit Leakage compensation circuit

2003-04-29

2004-12-21

Zweizig, Jeffrey (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

Reexamination Certificate

active

06833751

ABSTRACT:

BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is a schematic diagram illustrating an example of a witched current source
100
in accordance with the present invention.
FIG. 2
is a schematic diagram illustrating an example of an individual current source
200
in accordance with the present invention.
FIGS. 3A-3C
are timing diagrams illustrating an example of the operation of current source
200
in accordance with the present invention.
FIGS. 4A-4C
are schematic diagrams illustrating an example of compensation circuits CC
1
-CC
3
, respectively, in accordance with the present invention.
FIG. 5
is a schematic diagram illustrating an example of a bandgap reference circuit
500
in accordance with the present invention.
FIGS. 6A-6B
are graphs illustrating an example of the reference voltage VR output from bandgap circuit
500
over temperature when current source
510
includes and excludes compensation circuits CC
1
-CC
3
in accordance with the present invention.
FIG. 7
is a schematic diagram illustrating an example of a two-bit trim circuit
700
in accordance with the present invention.
FIG. 8
is a schematic diagram illustrating an example of a bandgap reference circuit
800
in accordance with the present invention.
FIG. 9
shows a graph illustrating an example of the reference voltage VR output from bandgap circuit
800
over temperature when trim circuit
700
includes and excludes compensation transistors M
51
-M
56
and M
61
-M
66
in accordance with the present invention.
FIG. 10
is a schematic diagram illustrating an example of an amplifier output stage
1000
in accordance with the present invention.
FIG. 11
is a schematic diagram illustrating an example of a folded cascade operational amplifier (op amp)
1100
in accordance with the present invention.
FIGS. 12A-12B
are graphs illustrating an example of the operation of op amp
1100
in accordance with the present invention.


REFERENCES:
patent: 5633611 (1997-05-01), Kohno et al.
patent: 5796244 (1998-08-01), Chen et al.
patent: 5900773 (1999-05-01), Susak
patent: 6072306 (2000-06-01), Dondale
patent: 6075407 (2000-06-01), Doyle
patent: 6535054 (2003-03-01), Ceekala et al.

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