Todd Weigandt resumes & CV records
Resumes
Todd C Weigandt, 566294 Sagebrush Bend Way, San Diego, CA 92130
Todd Weigandt Phones & Addresses
6294 Sagebrush Bend Way, San Diego, CA 92130 503-5483281
15430 Middleton Ct, Beaverton, OR 97007
Hillsboro, OR
Berkeley, CA
El Cerrito, CA
Saint Helens, OR
Del Mar, CA
Social networks
Todd C Weigandt
Linkedin
Mentions for Todd C Weigandt
Publications & IP owners
Us Patents
Single-Ended Input, Differential Output Low Noise Amplifier
US Patent:
7088179, Aug 8, 2006
Filed:
Sep 15, 2003
Appl. No.:
10/664048
Inventors:
Barrie Gilbert - Portland OR, US
Todd C. Weigandt - Portland OR, US
Todd C. Weigandt - Portland OR, US
Assignee:
Analog Devices, Inc. - Norwood MA
International Classification:
H03F 3/45
US Classification:
330254, 330260
Abstract:
An amplifier has an input terminal to receive an input signal. The amplifier includes a first gain stage comprising a pair of input transistors and a second gain stage to drive an output stage. The output stage provides inverting and non-inverting differential output signals on inverting and non-inverting output nodes. The amplifier may also include a feedback signal electrically connected between the inverting and non-inverting output nodes to emitters of the input transistors through a resistor network.
Input System For A Variable Gain Amplifier Having Class-Ab Transconductance Stages
US Patent:
7495511, Feb 24, 2009
Filed:
Aug 21, 2007
Appl. No.:
11/842873
Inventors:
Barrie Gilbert - Portland OR, US
Todd C. Weigandt - Portland OR, US
Eberhard Brunner - Waakirchen DE, US
Todd C. Weigandt - Portland OR, US
Eberhard Brunner - Waakirchen DE, US
Assignee:
Analog Devices, Inc. - Norwood MA
International Classification:
H03F 3/45
US Classification:
330254, 330260
Abstract:
A variable gain amplifier includes an attenuator having a plurality of pairs of tap points, and a plurality of pairs of gm cells, wherein each pair of gm cells is coupled to a corresponding pair of the tap points, and each pair of gm cells is constructed and arranged to operate as a multi-tanh cell.
Incremental Gain Amplifier
US Patent:
7880542, Feb 1, 2011
Filed:
Mar 24, 2008
Appl. No.:
12/054192
Inventors:
Barrie Gilbert - Portland OR, US
John Cowles - Beaverton OR, US
Todd C. Weigandt - Portland OR, US
John Cowles - Beaverton OR, US
Todd C. Weigandt - Portland OR, US
Assignee:
Analog Devices, Inc. - Norwood MA
International Classification:
H03G 3/00
US Classification:
330127, 330279
Abstract:
An amplifier includes an amplifier section having selectable signal paths to provide discrete gain settings, and logic to incrementally select the signal paths. The logic may be configured to increment the gain in response to digital gain control signals or an analog gain control signal. Another amplifier has an input section with one or more input cells and an output section with one or more output cells. Either the input section or the output section includes at least two cells that may be selected to provide discrete gain settings. A loop amplifier is configured in a feedback arrangement with the input section. The input and output sections may have multiple selectable cells to provide coarse and fine gain steps. The gain of the loop amplifier may be coordinated with the gain of the input section to provide constant bandwidth operation.
Input System For A Variable Gain Amplifier Having Class-Ab Transconductance Stages
US Patent:
7990217, Aug 2, 2011
Filed:
Jan 14, 2009
Appl. No.:
12/353698
Inventors:
Barrie Gilbert - Portland OR, US
Todd C. Weigandt - Portland OR, US
Eberhard Brunner - Waakirchen, DE
Todd C. Weigandt - Portland OR, US
Eberhard Brunner - Waakirchen, DE
Assignee:
Analog Devices, Inc. - Norwood MA
International Classification:
H03F 3/45
US Classification:
330254, 330260
Abstract:
A variable gain amplifier includes an attenuator having a plurality of pairs of tap points, and a plurality of pairs of gm cells, wherein each pair of gm cells is coupled to a corresponding pair of the tap points, and each pair of gm cells is constructed and arranged to operate as a multi-tanh cell.
Post Amplifier With Selectable Gain
US Patent:
8130035, Mar 6, 2012
Filed:
Jun 12, 2009
Appl. No.:
12/483786
Inventors:
Todd C. Weigandt - Portland OR, US
Barrie Gilbert - Portland OR, US
Barrie Gilbert - Portland OR, US
Assignee:
Analog Devices, Inc. - Norwood MA
International Classification:
H03F 3/45
US Classification:
330254, 330261
Abstract:
A selectable gain amplifier includes two or more selectable gain stages, each gain stage having a first input coupled to receive an input signal, a second input, and an output. The amplifier further includes and two or more feedback paths coupled between the outputs and the second inputs of the selectable gain stages.
Incremental Gain Amplifier
US Patent:
8362836, Jan 29, 2013
Filed:
Dec 30, 2010
Appl. No.:
12/982026
Inventors:
Barrie Gilbert - Portland OR, US
John Cowles - Beaverton OR, US
Todd C. Weigandt - Beaverton OR, US
John Cowles - Beaverton OR, US
Todd C. Weigandt - Beaverton OR, US
Assignee:
Analog Devices, Inc. - Norwood MA
International Classification:
H03G 3/30
H03F 3/45
H03F 3/45
US Classification:
330254, 330284, 330310
Abstract:
An amplifier includes an amplifier section having selectable signal paths to provide discrete gain settings, and logic to incrementally select the signal paths. The logic may be configured to increment the gain in response to digital gain control signals or an analog gain control signal. Another amplifier has an input section with one or more input cells and an output section with one or more output cells. Either the input section or the output section includes at least two cells that may be selected to provide discrete gain settings. A loop amplifier is configured in a feedback arrangement with the input section. The input and output sections may have multiple selectable cells to provide coarse and fine gain steps. The gain of the loop amplifier may be coordinated with the gain of the input section to provide constant bandwidth operation.
Input System For A Variable Gain Amplifier Having Class-Ab Transconductance Stages
US Patent:
2006023, Oct 26, 2006
Filed:
Jun 1, 2006
Appl. No.:
11/446097
Inventors:
Barrie Gilbert - Portland OR, US
Todd Weigandt - Portland OR, US
Todd Weigandt - Portland OR, US
International Classification:
H03F 3/45
US Classification:
330254000
Abstract:
An amplifier has an input terminal to receive an input signal. The amplifier includes a first gain stage comprising a pair of input transistors and a second gain stage to drive an output stage. The output stage provides inverting and non-inverting differential output signals on inverting and non-inverting output nodes. The amplifier may also include a feedback signal electrically connected between the inverting and non-inverting output nodes to emitters of the input transistors through a resistor network.
Incremental Gain Amplifier
US Patent:
2013013, May 30, 2013
Filed:
Jan 25, 2013
Appl. No.:
13/750502
Inventors:
Analog Devices, Inc. - Norwood MA, US
John Cowles - Beaverton OR, US
Todd C. Weigandt - Beaverton OR, US
John Cowles - Beaverton OR, US
Todd C. Weigandt - Beaverton OR, US
Assignee:
ANALOG DEVICES, INC. - Norwood MA
International Classification:
H03F 3/45
US Classification:
330254
Abstract:
An amplifier includes an amplifier section having selectable signal paths to provide discrete gain settings, and logic to incrementally select the signal paths. The logic may be configured to increment the gain in response to digital gain control signals or an analog gain control signal. Another amplifier has an input section with one or more input cells and an output section with one or more output cells. Either the input section or the output section includes at least two cells that may be selected to provide discrete gain settings. A loop amplifier is configured in a feedback arrangement with the input section. The input and output sections may have multiple selectable cells to provide coarse and fine gain steps. The gain of the loop amplifier may be coordinated with the gain of the input section to provide constant bandwidth operation.
NOTICE: You may not use BackgroundCheck or the information it provides to make decisions about employment, credit, housing or any other purpose that would require Fair Credit Reporting Act (FCRA) compliance. BackgroundCheck is not a Consumer Reporting Agency (CRA) as defined by the FCRA and does not provide consumer reports.