Tool/software:
Hello,
I would like to filter signal from a differential output of an ADC to a SE.
I found yous Analog Application Journal (page 37 of AAJ 3Q 2009) describing a MFB configuration implemented in a difference amplifier…
Tool/software:
Hello,
I would like to filter signal from a differential output of an ADC to a SE.
I found yous Analog Application Journal (page 37 of AAJ 3Q 2009) describing a MFB configuration implemented in a difference amplifier…
Hi Christophe,
The INA146 should work well for your application. It has internal precision trimmed resistors set to a gain of 0.1. This will take your signal down to 6V. From there you can attach a 50kOhm resistor from pin 8 to ground to create a voltage…
I have designed a 3 Op Amps instrumentation amplifier with a variable gain (potentiometer) from 1V/V to 10,000 V/V . It seems to work fine in the simulations (TINA TI) with Op amps that are dual supply, but the problem…
Hello,
I'm trying to design a difference amplifier with variable gain from 1 V/V to 1000 V/V preferably using a potentiometer. It is preferable that design has a linear gain, but it doesn't have to be perfect. For the op amps is preferably to use one…
hub (hub)
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1. the central part of a wheel, into which spokes are inserted.
2. a center around which other things revolve or from which they radiate.
Welcome to the TI Precision Designs Hub. Our new home here on E2E to provide tips, tricks, and design…
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.
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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…
In this month’s post on our sister blog, the “Precision Hub” on Planet Analog, I share a recent question I got from a customer in the Precision Amplifier Forum here in the TI E2E™ Community.
His circuit used an op amp to amplify…
When troubleshooting non-functional or poorly performing circuits, engineers often run simulations or other analyses that consider the circuit at the schematic level. If these methods fail to resolve the issue, even…
“A clever person solves a problem. A wise person avoids it.” – Albert Einstein
Albert Einstein would have loved analog design – there is always an element of relativity involved. For example, in data acquisition systems, accuracy is relative…
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…
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…
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…
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 …
Our monthly post on our sister blog, the “Precision Hub” on Planet Analog, focuses on transient stability testing.
In it, I share a recent experience I had with one of our summer interns. He was taking transient stability data on a design…
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…
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…
It’s been three weeks since we launched “The Hub” here on E2E, and we’re already branching off into new and exciting areas. Today we kicked off a sister blog on Planet Analog called the “Precision Hub” with a blog post from…
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…
In my last blog post, I discussed why instrumentation amplifier power supply rejection ratio (PSRR) and common mode rejection ratio (CMRR) improve as the amplifier’s gain increases.
Returning to the simplified model of an instrumentation amplifier…
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…
This technical article was updated on July 23, 2020.
Engineers like to simplify the design process using many rules to get the design going in the right direction before optimizations occur. One of my favorites is to always drive the inputs of an analog…
