MARK W. W. ISMOND
General Contractor at Pedregosa St, Santa Barbara, CA

License number
New Mexico 25204956
Category
Contractor
Address
Address
407 W Pedregosa St #14, Santa Barbara, CA 93101
Phone
(805) 701-5343

Professional information

Mark W. Photo 1

Operational Amplifier

US Patent:
8354885, Jan 15, 2013
Filed:
May 25, 2012
Appl. No.:
13/481312
Inventors:
Zachary M. Griffith - Thousand Oaks CA, US
Miguel E. Urteaga - Moorpark CA, US
Mark J. W. Rodwell - Santa Barbara CA, US
Assignee:
The Regents of the University of California - Oakland CA
Teledyne Scientific & Imaging, LLC - Thousand Oaks CA
International Classification:
H03F 3/45
US Classification:
330260, 330310, 330302
Abstract:
An operational amplifier may include a transimpedance input stage. The operational amplifier is capable of self-biasing its input voltage(s) including a first stage, an input source connected to the first stage, an output stage connected to the first stage via feedback resistors, and feedback current sources connected to the first stage, wherein the feedback current sources are set to generate feedback currents flowing from the output stage back to the input stage via the feedback resistors, so as to self-bias the input voltage(s) at the input stage. A method for allowing for an op-amp to self-bias its input voltage(s), including generating feedback currents flowing from the output stage back to the input stage via feedback resistors, so as to self-bias the input voltage(s) at the input stage.


Mark W. Photo 2

Operational Amplifier

US Patent:
8222958, Jul 17, 2012
Filed:
Feb 3, 2011
Appl. No.:
13/020689
Inventors:
Zachary M. Griffith - Thousand Oaks CA, US
Miguel E. Urteaga - Moorpark CA, US
Mark J. W. Rodwell - Santa Barbara CA, US
Assignee:
Teledyne Scientific & Imaging, LLC - Thousand Oaks CA
The Regents of the University of California - Oakland CA
International Classification:
H03F 3/45
US Classification:
330260, 330310, 330307
Abstract:
The present invention relates generally to an operational amplifier. In one embodiment, the present invention is an operational amplifier including a transimpedance input stage, the transimpedance input stage including a first stage connected to a first resistor and a second resistor, and an output stage connected to the transimpedance input stage.


Mark W. Photo 3

Operational Amplifier

US Patent:
7898333, Mar 1, 2011
Filed:
Oct 8, 2008
Appl. No.:
12/247974
Inventors:
Zachary M. Griffith - Thousand Oaks CA, US
Miguel E. Urteaga - Moorpark CA, US
Mark J. W. Rodwell - Santa Barbara CA, US
Assignee:
Teledyne Scientific & Imaging, LLC - Thousand Oaks CA
The Regents of the University of California - Oakland CA
International Classification:
H03F 3/45
US Classification:
330260, 330306, 330310
Abstract:
The present invention relates generally to an operational amplifier. In one embodiment, the present invention is an operational amplifier including a transimpedance input stage, the transimpedance input stage including a first stage connected to a first resistor and a second resistor, and an output stage connected to the transimpedance input stage.