Last week for Halloween, I handed out candy to kids in all sorts of costumes. Some occupations make great costumes: fireman, policeman, doctor, professional athlete, and of course astronaut. But I’ll admit that every year I’m a bit disappointed that no…
Winter is my favorite time to work on hobby projects in Texas. My garden is filled with easy-to-maintain winter or cover crops, and it’s cool enough to work outside without overheating.
While working on a recent project, I had to re-route some…
In honor of National Puzzle day here in the United States of America, I humbly present six op amp puzzles for you to puzzle on until your puzzler is sore – or at least until next week when I will publish the right answers!
I’ve even provided you…
Tim Green
Here is the moment you have all been waiting for – the answers to the six op amp puzzles I posted last week. You know, the ones that you have all been puzzling and puzzling until your puzzler is sore! Score your number of right answers…
My esteemed colleague, John Caldwell (not to be confused with ‘John’ the intern), authored a couple excellent blogs about instrumentation amplifier (INA) power supply and common-mode rejection ratio (PSRR & CMRR). (See “Dealing with rejection…
Some of the most frequently asked questions we get in the Precision Amplifiers forum here in the E2E Community™ have to do with an IC’s long-term stability of various parameters. Nothing in nature is static, and the datasheet parameters are…
Monitoring the voltage level of a coin cell in a portable device or in back-up service is a common, simple application for modern CMOS operation amplifiers (op amps).
Figure 1 shows an implementation using the 1.8-V, OPA333 zero-drift op amp. The coin…
Calculating resistor self-heating. It’s a fairly fundamental concept that is often unfamiliar to, or overlooked by, many engineers.
I was reminded of its importance while explaining the theory behind a precision resistance temperature detector …
Electrical engineers are accustomed to dealing with rejection, and we absolutely love it. From common-mode rejection to power supply rejection, and even EMI rejection. The more rejection, the better!
However, in the…
In this month’s post on our companion blog, the “Precision Hub” on Planet Analog, I share an idea I had about EMI and lightning.
After watching a storm, I started thinking about the EMI challenges we encounter with precision systems…
Before working as an applications engineer, I worked as an IC test development engineer here at TI. One of my projects was to characterize an I2C temperature sensor. After writing some software, I threw together a hand-wired prototype board. I was in…
