NEW YORK—The Defense Advanced Research Projects Agency is exploring unconventional processing methods to analyze mission-critical intelligence, surveillance and reconnaissance (ISR) data in the analog realm.
The agency has launched a program called UPSIDE, which stands for the Unconventional Processing of Signals for Intelligent Data Exploitation. Darpa’s motivation is to find processing techniques that do not have the same power and speed limitations associated with digital processors used in today’s ISR platforms.
The program employs probabilistic inference as its fundamental computational model to drive down power consumption. Inference can be implemented directly in approximate precision by traditional semiconductors as well as by new kinds of emerging devices. This approach aims to compute inference directly and more naturally through a number of interconnected analog nodes.
“A single inference operation performed in digital CMOS could involve hundreds of operations. However, the inference operation can be more naturally performed directly by a group of coupled analog devices, reducing both power and the number of discrete operations,” said Darpa program manager Dan Hammerstrom. “Utilizing coupled analog devices to represent data in a non-Boolean form for high-order computation is expected to provide orders of magnitude improvements in the power efficiency of data processing.”
According to an agency announcement, the definition of emerging devices is broad to allow developers to propose a wide range of parts. But they cannot be CMOS-based, at least not without additional specialized processing steps, and cannot be on the mainstream ITRS http://www.itrs.net/about.html roadmap. Analog-based devices such as memristors and spin torque oscillators could possibly be used to replace CMOS-based digital processors to accelerate video and imagery analysis in ISR systems, according to Hammerstrom.
Fortunately for circuit designers, a new tool is available that can simplify the process of identifying the ESD suppression device best suited to an application, which makes it far easier to incorporate circuit protection earlier in the board planning process. The Littelfuse iDesign™ Online Simulation and Product Selection Tool
. I received a very good reader question from my last blog post regarding the various parameters that are reported by the tool. Let’s take a look at an example and explore the parameters that are returned. In this example we will look at the AD9643-250.
Managing system thermal performance is critical in today’s electronic systems if you are to maximize performance and the user experience. As systems grow more powerful, and in many cases smaller in size, managing the thermal profile has become an ever-increasing challenge. Monitoring the current provides a leading indicator to potential thermal issues.
In blog number 3, we are going to divert a little from our normal trend of evaluating power supply design and simulation tools. Instead, we are going to look into power management tools that are online.