Steven E Decker

US Patent:

6864820, Mar 8, 2005

Filed:

Feb 28, 2003

Appl. No.:

10/376515

Inventors:

Katsufumi Nakamura - Andover MA, US
Steven Decker - Derry NH, US

Assignee:

Analog Devices, Inc. - Norwood MA

International Classification:

H03M001/12

US Classification:

341155, 341161

Abstract:

One embodiment of the invention is directed to a method of extending the input range of an analog-to-digital converter (ADC) having a nominal input voltage range. The method comprises an act of mapping an over-range input voltage that falls outside of the nominal input voltage range to an over-range digital output code. Another embodiment of the invention is directed to an apparatus comprising an ADC having a nominal input voltage range, wherein the ADC is adapted to map an over-range input voltage that falls outside of the nominal input voltage range to an over-range digital output code.

US Patent:

6965332, Nov 15, 2005

Filed:

Feb 28, 2003

Appl. No.:

10/376467

Inventors:

Katsufumi Nakamura - Andover MA, US
Steven Decker - Derry NH, US

Assignee:

Analog Devices, Inc. - Norwood MA

International Classification:

H03M001/06
H03M001/10

US Classification:

341118, 341120

Abstract:

One embodiment of the invention is directed to a method comprising an act of performing digital correction of an offset in a system comprising an analog-to-digital converter (ADC) having a usable input range that is greater than a nominal input range, wherein the offset exists at an input of the ADC. Another embodiment of the invention is directed to a system comprising an ADC having a usable input range that is greater than a nominal input range, wherein an offset exists at an input of the ADC and the offset is corrected using digital correction.

US Patent:

7692489, Apr 6, 2010

Filed:

Dec 16, 2005

Appl. No.:

11/305069

Inventors:

Daniel F. Kelly - Andover MA, US
Lawrence Singer - Wenham MA, US
Steven Decker - Sandown NH, US
Stephen R. Kosic - San Diego CA, US

Assignee:

Analog Devices, Inc. - Norwood MA

International Classification:

H03F 3/45

US Classification:

330258, 330253, 330260, 330261, 330292

Abstract:

A differential two-stage Miller compensated amplifier system with capacitive level shifting includes a first stage differential transconductance amplifier including first and second output nodes and an output common mode voltage, a second stage differential transconductance amplifier including non-inverting and inverting inputs and outputs and an input common mode voltage, and a level shifting capacitor circuit coupled between the first and second output nodes and the non-inverting and inverting inputs for level shifting between the output common mode voltage of the first stage and the input common mode voltage of the second stage.

US Patent:

20130015323, Jan 17, 2013

Filed:

Jun 13, 2012

Appl. No.:

13/517524

Inventors:

Mark T. SAYUK - Reading MA, US
Steven J. DECKER - Sandown NH, US

Assignee:

ANALOG DEVICES, INC. - Norwood MA

International Classification:

H01L 27/148

US Classification:

2502081

Abstract:

Embodiments of the present invention employ a charged-based readout circuit in an image sensing system that includes a column readout circuit which may perform sampling on signals received from a pixel array and transfer a corresponding correlated double sample (CDS) signal, a differential channel readout circuit that may receive the corresponding CDS signal and amplify the signal using an output amplifier, and an output buffer which may receive the amplified CDS signal and output a corresponding signal out of the system. The output amplifier may be composed of two output amplifier paths so that ping-ponging is possible.