Analog Signal Chain real world problem solutions: Technology and Tools
• Dec 6, 2017

### How to make precision measurements on a nanopower budget, part 1: DC gain in nanopower op amps

Heightened accuracy and speed in an operational amplifier (op amp) has a direct relationship with the magnitude of its power consumption. Decreasing the current consumption decreases the gain bandwidth; conversely, decreasing the offset voltage increases the current consumption. Many such interactions between op amp electrical characteristics influence...
• Dec 4, 2017

### “Trust, but verify” SPICE model accuracy, part 6: voltage noise and current noise

Previous installments of this blog post series discussed the need to verify SPICE model accuracy and how to measure common-mode rejection ratio (CMRR), offset voltage versus common-mode voltage (Vos vs. Vcm), slew rate (SR), open-loop output impedance (Zo), input offset voltage (Vos) and open-loop gain (Aol). In this sixth and final installment, I’ll...
• Nov 20, 2017

### “Trust, but verify” SPICE model accuracy, part 5: input offset voltage and open-loop gain

Previous installments of this blog post series discussed the need to verify SPICE model accuracy and how to measure common-mode rejection ratio (CMRR), offset voltage versus common-mode voltage (Vos vs. Vcm), slew rate (SR) and open-loop output impedance (Zo). In part 5, I’ll explain how to verify two of the most impactful specs of precision operational...
• Nov 16, 2017

### Seven things that only an analog engineer would understand

I’m sure you’ve been asked at some point what you do for a living. For me, it is normally an odd conversation: Them: What do you do?Me: I work at Texas Instruments.Them: So you make the calculators!Me: No, actually I work in Analog.Them: ...
• Nov 10, 2017

### You can be an electromechanical engineer

Although many electronics engineers have their heads buried in schematics, capacitors, amplifiers, voltages, frequencies, timings and impedance, real-world implementations take form as physical systems that have to fit within the final product and in...
• Nov 2, 2017

### How to reduce the number of I/O pins with a switch matrix module

Today, we have vehicle types that didn’t exist years ago. We have compact SUVs, coupes, convertibles, minivans and trucks. It goes beyond vehicle types as well; cars offer a variety of safety functions (blind-spot detection, tire-pressure monit...
• Oct 31, 2017

### Where are ultrasonic sensors used? – Part 2

This blog post was co-authored by Akeem Whitehead. Consumer drones have grown in popularity in recent years, used to capture stunning footage, carry rescue supplies and even for racing. Most drones use various sensing technologies for autonomous navigation, collision detection and many other functions. Ultrasonic sensing in particular assists with...
• Oct 30, 2017

### What is an EFT?

There are many different types and flavors of certification testing for semiconductor devices: electromagnetic interference and compatibility, electrostatic discharge, transient pulse, vibration resistance, humidity and temperature stress – the...
• Oct 26, 2017

### The next generation of linear resonance actuators

What do mobile phones , smart watches and portable electronics have in common? They’re all designed to help users interact with the digital world. A consumer’s primary interaction with electronics occurs via visual feedback, but the importance of tactile or haptic feedback is growing. Quality haptic feedback enhances the user experience...
• Oct 24, 2017

### “Trust, but verify” SPICE model accuracy, part 4: open-loop output impedance and small-signal overshoot

Previous installments of this blog post series discussed the need for verifying SPICE model accuracy and showed how to measure common-mode rejection ratio (CMRR), offset voltage versus common-mode voltage (Vos vs. Vcm) and slew rate (SR). In part four, I’ll continue putting operational amplifier (op amp) SPICE models to the test by checking their...