PWM DAC Design
Dennis Feucht 8/15/2014 14 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 2 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.
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.
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 16 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?
Measuring an Alien World
Steve Taranovich 7/30/2014 17 comments
How do you measure and analyze a planet one-and-a-half times the size of Earth and 300 light years away? How can we know its composition? With the incredible technology of a cryogenic telescope like the Spitzer and Kepler Space Telescopes.
Sensor Footprint Evolution: Does Size Matter?
Steve Barraclough 7/25/2014 10 comments
Industry observers will not argue that the explosion in the adoption of motion sensors, principally accelerometers, was enabled by reducing the form factor to the point where the sensors could easily be integrated into mobile applications.
Improving DC Output Voltage Accuracy
Steve Taranovich 7/22/2014 14 comments
Here is the third of three short tech nuggets, by Rich Nowakowski from TI, before our “Ask the Experts” session on Wednesday, July 23, at 1:00 p.m. ET (10:00 a.m. PT).
How a Coffee Packaging Machine Educated Me
Aubrey Kagan 7/18/2014 29 comments
One of my first projects was to design a control for a coffee packaging machine. It was in the late 70s and microprocessors were on everybody's lips, but few actually knew anything about them.
Energy Harvesting for Wearables
Thomas Kail 7/15/2014 23 comments
Wearable applications including smart watches, sport watches, fitness bands and more are growing in popularity, and so, too, is the demand for intelligent sensors to use in them. If analyst predictions are correct, the market is going nowhere but up in the coming years.
Improving Analog Design Time
Keith Sabine 7/9/2014 10 comments
Designers can estimate parasitics early in the design flow, at the RTL level, to see if they meet timing and power criteria. Thus design changes can be iterated relatively quickly until the design goals are met, with detailed layout following.
I would like to focus on embedded systems integrated on silicon substrates. These embedded circuits get their power and signals from the outside world.
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).
I now hope to cover the comparative advantages and disadvantages of both mechanical and electronic potentiometers.
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.
Did you ever wonder how "they" did that, especially when we can only think of doing it the new way with our advanced technologies?