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Content posted in August 2014
ADCs for High Dynamic Range: Successive-Approximation or Sigma-Delta?
Maithil Pachchigar  
8/27/2014   13 comments
I need 100-dB dynamic range for a medical imaging application. Can you help me choose between successive-approximation and sigma-delta ADC architectures?
Top 6 Technologies That Demand Circuit Protection for Safe Use
Bharat Shenoy  
8/27/2014   85 comments
Without even thinking about it, consumers depend on technology throughout the day as they send texts, turn on lights, and drive home from the office. But that technology depends on something that usually goes unnoticed until there's a problem.
Interfacing to ADCs: Power Supplies, Part 3
Jonathan Harris  
8/26/2014   16 comments
I thought it would be good to continue looking at the example I gave in my last blog where we looked using fewer LDOs and combining power supply rails on an ADC while maintaining isolation with ferrite beads.
Innovative Single Contact Solutions in Renewable Energy & Smart Grid
Chris Reynolds  
8/26/2014   18 comments
Electronic equipment and power management is becoming increasingly critical as our power grid ages and renewable energy comes on line. In response, new technologies are being developed to protect equipment from power disturbances and fluctuations.
Chronicles of Planet Analog Talented Authors: Sanjaya Maniktala
Steve Taranovich  
8/25/2014   44 comments
This is the first of many chronicles I will write regarding the many talented authors on Planet Analog
How to Kill an Ultracapacitor, if You Really Want To
Mike Everett  
8/22/2014   65 comments
While ultracapacitors can outlast most electronic components in any application, they can meet an early demise if you really try. But the list of things you can do to kill an ultracapacitor is pretty limited.
Protecting Against Reverse Polarity: Which Method Is Right for You?
Richard Chung  
8/22/2014   17 comments
Reverse polarity is a dangerous electrical condition that can be difficult to prevent once a system leaves the factory, so adding circuitry that protects against its effects is an important part of improving system reliability. This article looks at the many methods for protection and weighs their tradeoffs.
Capacitors: Bigger Is Not Always Better
Brandt Braswell  
8/20/2014   33 comments
I would like to focus on embedded systems integrated on silicon substrates. These embedded circuits get their power and signals from the outside world.
Parasitics & Capacitor Selection, Part 5: Q
Chris Reynolds  
8/19/2014   2 comments
Q is a dimensionless number. It represents the ratio of the maximum energy stored to the power loss in a system at a given angular frequency, rather than the inverse (DF).
The Next Frontier of Integrated Circuits: Space, Part 3
Paolo Scalisi  
8/18/2014   47 comments
A growing number of companies are developing products for military purposes or for space exploration. They are being helped by NASA, ESA, SpaceX, and others.
Potentiometers: Mechanical & Electronic, Part 2
Aubrey Kagan  
8/18/2014   37 comments
I now hope to cover the comparative advantages and disadvantages of both mechanical and electronic potentiometers.
An 'Analog Mystery' to Investigate
Analog Angle  
8/18/2014   23 comments
Did you ever wonder how "they" did that, especially when we can only think of doing it the new way with our advanced technologies?
PWM DAC Design
Dennis Feucht  
8/15/2014   26 comments
The question that arises in the design of a simple PWM DAC is what the low-pass filter pole frequency should be relative to the PWM frequency. This question is addressed by deriving the design equation.
Resistor Tech Brief 1
Steve Taranovich  
8/15/2014   3 comments
Here is our first "Ask the experts" tech brief in advance of our Resistor chat on Wednesday, August 20 at 1PM ET (10AM PT). I hope this stirs up some questions/comments for our chat.
The Next Frontier of Integrated Circuits: Space, Part 2
Paolo Scalisi  
8/12/2014   14 comments
The European Space Agency has accomplished many space missions for scientific purposes.
Potentiometers: Mechanical & Electronic, Part 1
Aubrey Kagan  
8/11/2014   12 comments
As I understand it, there are two different reasons for using an adjustable resistor.
Signal Chain Basics #92: The Insidious Claw Curve
Signal Chain Basics  
8/11/2014   1 comment
Operational amplifier (op amp) datasheets normally have a long list of characterization curves. This list can be overwhelming to new engineers. One frequently misunderstood curve is nicknamed the "claw curve" because of its distinctive claw-like shape.
Key Considerations for Multiplexed Data-Acquisition Systems
Maithil Pachchigar  
8/11/2014   36 comments
Multiplexing allows the use of fewer ADCs per system, offering significant savings in power, size, and cost.
Please, Keep Murphy & Hofstadter Laws Away
Victor Lorenzo  
8/8/2014   33 comments
Starting a new project always requires prior evaluation of the complexity, new skills needed, literature, demonstrators, development tools, and vendor support availability.
Designing the Resistor-Capacitor-Diode (RCD) Snubber of a Flyback Converter
Richard Chung  
8/7/2014   6 comments
The resistor-capacitor-diode (RCD) snubber, the key element of a Flyback converter, requires solid calculation and experiment verification to figure out the optimum parameters.
What Does Your Noise Nemesis Look Like?
Analog Angle  
8/6/2014   2 comments
Noise in its many manifestations is ever-present in electronic circuit and systems designs. Engineers must understand the specific types of noise they are dealing with before they can effectively suppress and overcome it, via both analog and algorithmic techniques.
LEDs Are Photodiodes Too
Steve Taranovich  
8/5/2014   27 comments
I read RAQ No. 45, "Glass Diodes May See the Light – and Hum," which discusses 100/120 Hz LF noise caused by a glass diode’s photosensitivity. I need a cheap photodetector, but a 1N4148 doesn't seem to work. How should I connect it?
Interfacing to ADCs: Power Supplies, Part 2
Jonathan Harris  
8/4/2014   4 comments
There are some disadvantages when driving low input supply voltages, where multiple LDOs may be required.
The Next Frontier of Integrated Circuits: Space, Part 1
Paolo Scalisi  
8/4/2014   11 comments
The interest of the semiconductor industry for the ICs that can work in the open space has lead STMicroelectronics to enlarge its portfolio with some devices that can survive to radiations up to 300 krad/s.
Just Add A Transistor: Clipping Me Softly
Kendall Castor-Perry  
8/1/2014   4 comments
Someone wanted to try out our latest programmable SoC, the PSoC 4200, as an audio interface, taking the signal from a small, low-cost MEMS microphone.

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