Content posted in March 2015
Make a Freezer Alarm Using a Power Op Amp with Zero Power Consumption
Steve Taranovich 3/31/2015 6 comments
When your home’s deep freezer, full of food, experiences an AC power failure while you are out for an extended time, its contents can thaw out. If the AC power is then restored before you return home, the contents can re-freeze and you may never know that your food is spoiled. This has given rise over the years to a number of freezer-alarm circuits and methods to detect thaw and re-freeze.
5G: Where Are We Now?
Steve Taranovich 3/31/2015 Post a comment
It seems like we just had LTE and LTE Advanced beginning deployment in base stations everywhere. In spite of that effort, there has been heavy discussion of early development ideas of the 5G next-gen architecture to meet the ever-growing demands of the cellular airwave capacity, speed and customer future needs.
When Developing New Silicon IP, Is First Pass Success Possible? Part 1
Brandt Braswell 3/31/2015 1 comment
If you have worked in the semiconductor industry for more than a few years I am sure you have heard senior leadership speak about the need for your integrated circuit designs to be first pass successes and not the typical two to three spins or more to reach the targeted performance. The question is this: Is first pass success feasible and should be expected? I do not want to stir up a hornets nest with my response but the answer to the question is that it depends. Depends on what you say? Well, the answer depends on several different interwoven complexities that can determine if first pass success is possible. I would like to explore some possible ways to answer this question. Furthermore, the complexity of this question increases when developing complex mixed signal IC’s.
Analog Devices Design Tools: ADISimADC Performance Metrics
Jonathan Harris 3/27/2015 1 comment
. 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.
Don't “Brick” My Supply!
Steve Taranovich 3/20/2015 Post a comment
In today’s connected world, software frequent-field updates are necessary to improve accuracy, or add on benefits or even fix bugs. If you like these updates to be invisible to you, you are going to love this idea - Instant updates that do not require your software to restart or cause any glitch in the power supply.
Do Not Operate a Four-Switch Buck-Boost Converter in Buck-Boost Mode
Steve Taranovich 3/18/2015 11 comments
A DC/DC converter converts an input voltage source to a desired voltage level. When the input voltage is higher than the desired output voltage, you need a buck converter. Conversely, when the input voltage is lower than the output voltage, you need a boost converter. In applications where the input voltage could be either higher or lower than the output voltage, what you need is a buck-boost converter.
Lacking Grand Answers? Look for the Best “Little” Answers
Steve Taranovich 3/17/2015 1 comment
Much time is spent discussing the need for more efficient use of limited energy resources, and with good reason. Energy demand continues to grow and the number of loads is predicted to climb exponentially as Internet of Things (IoT) deployment becomes real.
Seemingly Simple Circuits, Part 6: The Refined Current-Loop Converter Model
Dennis Feucht 3/14/2015 6 comments
In this last part of a long article, we look at the final refinement for waveform-based modeling which is based on average switching-cycle current, not on peak or valley current values within the cycle. This is significant because the current of interest to us in power supply design is the average current. Power-supply ratings are based on it.
STEM Demystifying Science and Engineering For Young Girls
Steve Taranovich 3/6/2015 3 comments
I am a strong believer in the STEM program for young children, but in this blog I want to address young girls in particular because the so-called “leaky” pipeline of engineering talent is seen predominantly at age 16, but typically the decision is made around age 14 or so.
These days, I often code design equations for filter circuits directly into sequences of Excel cells
The introduction of the solar boat is necessary to preserve our planet, which is mainly covered by water; the autonomous drive option is a pleasant alternative
Leading up to APEC have been a slew of new introductions by various suppliers. I wanted to highlight some of that here on Planet Analog for your information
Could a 16-bit SAR converter application reach a dynamic range of 125 dB at 600 kSPS?
My ‘gut feel’ as an Electronics Engineer tells me that the need for more adequate and intensive pilot training is a strong possibility