Robert M. Hanrahan is a member of the technical staff and an FAE manager at National Semiconductor Corp. Before that, he was a director at Zarlink Semiconductor supporting its Consumer Communications Business Unit. Robert holds a BS from the University of the State of New York. Email address: Robert.Hanrahan@nsc.com
5 results found for Robert M. Hanrahan, displaying items 1 - 5
October 1, 2009[Ideas For Design] Two Wires Carry Power And Data
At times, designers face a limited amount of wire and/or a limited cost to communicate with a remote device such as a sensor. Many devices allow communication over an ac or dc power line employing an AM or FM modulation scheme. However, they tend to be costly. This design is a simple, low-cost method for sending data across the same wire used to supply power. It’s based on modulating current from a remote device back to a host. A later example...
October 1, 2009[Ideas For Design] Two Wires Carry Power And Data: Backstory
This application is as useful today as it was when I described it in the Oct. 1, 1996 issue. The deployment of sensors has increased significantly, resulting in an increased demand for efficient interconnect techniques between sensors and a host system. The use of only two wires often is attractive from both a cost and reliability standpoint. Sensing applications are no different than others—power and size are being driven smaller while faster operation is desirable...
February 26, 2009
[Web Exclusive] LM5001 Backgrounder
The LM5001, developed by National Semiconductor, is a high-voltage switch-mode regulator containing all of the functions necessary to implement efficient high-voltage boost, flyback, SEPIC, and forward converters, using few external components.
February 26, 2009[Design View / Design Solution] Powering The Signal Path
Power delivered to sensitive analog circuitry must be treated differently than power for digital circuitry. All circuits are affected by noise delivered through the power supply, yet analog loads tend to be more sensitive. The actual type of circuitry and application will determine the tolerable noise limits. Powering digital circuitry today is a fairly straightforward task and can be handled with available power design tools, such as ...
Robert M. Hanrahan is a member of the technical staff and an FAE manager at National Semiconductor Corp. Before that, he was a director at Zarlink Semiconductor supporting its Consumer Communications Business Unit. Robert holds a BS from the University of the State of New York.
