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Analog

Steve Taranovich
Editor
Latest design tips and clever circuit architectures that analog design engineers must have to keep up with fast-paced developments in the analog world of interface, timing, and RF advancements. Industry innovations and processes that enhance analog performance are some of the many topics to be explored in great technical depth as they happen.

Autonomous vehicles: Are they ready for road challenges yet?

There are many ongoing developments in software and electronic controls that are very promising to autonomous vehicle safety and ultimate implementation. Let’s take a look at some of these efforts. Read More...

Perform pass/fail tests with an oscilloscope

Eliminate downloading data and writing test code. Let the oscilloscope run the tests. Read More...

Book Excerpt: Sevick’s Transmission Line Transformers, Chapter 9 Baluns

This chapter excerpted from Sevick’s Transmission Line Transformers describes the balun as a subset of transmission line transformers with an in-depth treatment of most used types. Read More...

An investigation of distortion in a voltage controlled amplifier, Part 1

One of the more common building blocks of a voltage controlled amplifier (VCA) is a differential pair amplifier. Read More...

Fairchild acquisition of Xsens

I was not too impressed with all the talk I’ve heard but not much action---until now—Learning of the Xsens acquisition significantly reinforces my faith in Fairchild’s MEMS and sensor offerings and is in tune with what they have been promising. Read More...

Book review: Jerry Sevick’s Transmission Line Transformers

The following is a book review of what started out in 1987 as a compilation of research done on wideband transformers for matching vertical antennas to 50 ohm transmission lines. Read More...

Designs of small footprint audio distribution amplifiers, Part 2

Sometimes we may need to distribute audio signals to several rooms in the house or in the office. That is useful when we want to mask external noise or when we wish to create an appropriate environment. Read More...

DecaWave DWM1000 module: Precise indoor location

Fabless Ireland semiconductor company, DecaWave, announced their first module, DWM1000, based on what the company claims is the industry's most precise indoor location and communication CMOS chip, the DW1000 Read More...

Designs of small footprint audio distribution amplifiers, Part 1

Sometimes we may need to distribute audio signals to several rooms in the house or in the office. That is useful when we want to mask external noise or when we wish to create an appropriate environment. Read More...

Power supply oscillation

In a nutshell, the power supply problem was as sketched below. When it was assembled by that first company, it worked okay. When it was assembled by my company's "Manufacturing" people, the power supply oscillated at 10 MHz. Read More...

Improve efficiency of low-cost switcher

Reduce losses by over 30%, and improve Vin(min) too, on a 34063-based or similar switcher. Read More...

Variable HV power supply employs photovoltaic optocoupler

This unusual topology saved the day when a higher-voltage variable supply was needed. Read More...

Intro to airborne radar

George Stimson’s Introduction to Airborne Radar is now in its third edition. Here’s a look at how SciTech worked with a team of radar and EW engineers to update the latest version of this venerable text. Read More...

Microchip Bluetooth Low Energy smart module

Microchip Technology Inc. announced its first Bluetooth® 4.1 Low Energy module Read More...

Book Review: Classic analog design textbook by Professor Sergio Franco

Professor Franco has completed his Fourth Edition of “Design with Operational Amplifiers and Integrated Circuits”, a book targeted at Senior undergraduate and Graduate level university engineering courses as well as all levels of design engineers working in the field of electronics. Read More...

The Circuit Designer's Companion: The safety earth and wiring/cables

Part 4 of an excerpt from the book "The Circuit Designer's Companion, 3rd Ed." examines the safety earth and begins a look at the major types of wiring and cables. Read More...

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555-based class-D headphone driver makes great practice amp

This class-D audio amp “plays” to the 555’s strengths. Read More...

LTC Design Note: Robust 10MHz reference clock input protection circuit and distributor for RF systems

Design a protected 10MHz reference input without degrading phase noise. Read More...

Avago Tech Note: Isolated current sensing with ∑-∆ optoisolators

Sigma-delta optocouplers make for accurate isolated sensing, and can trade off speed for ENOB. Read More...

Avago Tech Note: Fast analog isolation with linear optocouplers

Implement isolated analog signals and current loops with linear optocouplers. Read More...

Three-transistor current source covers wide range

This Design Idea is a two-wire current regulator that strikes a good balance between performance and parts count, and can deal with low voltage & medium to high currents. Read More...

Differential amp has 6dB lower noise, twice the bandwidth

Differential/instrumentation amp topologies possess varying trade-offs. Here’s one that improves noise & BW at the expense of input resistance. Read More...

Exclusively select 1 of N relays

Simple elegance reigns in this 1-of-N selector. Read More...

High-power shunt regulator uses BJT & reference IC

This circuit provides much better performance and higher power handling than a Zener diode. Read More...

Safety flasher warns of high voltage

A low power circuit warns the user that high voltage is present. Read More...

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DecaWave DWM1000 module: Precise indoor location

Fabless Ireland semiconductor company, DecaWave, announced their first module, DWM1000, based on what the company claims is the industry's most precise indoor location and communication CMOS chip, the DW1000 Read More...

WaveSurfer oscilloscopes land on MAUI

Easy-to-use interface now appears in the Teledyne LeCroy WaveSurfer 3000 series of oscilloscopes. Read More...

Microchip Bluetooth Low Energy smart module

Microchip Technology Inc. announced its first Bluetooth® 4.1 Low Energy module Read More...

PCIe board generates two independent sine waves

Generate signals to 800 MHz, programmed through a GUI, C program, or hardware. Read More...

Maxim Integrated PIXI: How to make a highly functional Field Programmable Analog Array (FPAA)

The Maxim Integrated design team knew the FPAA history and wisely designed a solution that stayed away from all the other supplier designs that failed to live up to their potential. Read More...

Digital pots operate at 36 V

Supporting wide signal swings, these DigiPots also feature high terminal/wiper current support and an extended temperature range. for industrial, automotive and audio applications. Read More...

iPad app from NI runs accurate SPICE simulations

Multisim Touch simulates circuit designs anywhere, anytime, says National Instruments; students, hobbyists and engineers can use the iPad app to design and simulate circuits using high-fidelity SPICE simulation with results identical to the desktop. Read More...

SiTime enters wearables, IoT markets with 32 kHz MEMS TCXO

32 kHz TCXO (temperature compensated oscillator) which they claim to be the smallest, lowest power device in the industry. With its tiny footprint and ultra-low power consumption Read More...

Enhanced comparators run at lower voltage

Enhanced versions of the widely-used LMV331 and LMV393 single- and dual-channel comparators, for use in battery-powered portable devices, run at a lower voltage, draw less current and offer smaller package options than most industry-standard alternatives. Read More...

Double oscilloscope release covers signal integrity, performance, and usability

Agilent Technologies' release of the Infiniium S-Series and the InfiniiVision 6000X-series oscilloscopes covers a wide range of midrange measurement applications. Read More...

Op amp drives industrial loads

Analog Devices has posted pre-release information on the forthcoming ADA4870, a unity-gain stable, high-speed current feedback amplifier capable of delivering 1A of continuous output current from a 40V supply. Read More...

Akustica’s MEMS microphones for smartphones and wearables

Akustica added four new high-performance analog microphones to its high definition (HD) voice product line, including the AKU346, the industry’s smallest MEMS microphone to achieve 64dB SNR. Read More...

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Teardown: Maxwell's equations

If Maxwell's Equations were a piece of hardware, most of us would be eager to see what's inside the box. But you won't find the literary equivalent of a physical teardown because the subject is basically mathematical and as such, requires a certain amount of rigor to explain and understand. If you're willing to trade mathematical rigor for readability, this article may be the refresher you've been looking for. Read More...

Teardown: The Engineer’s Mind

For this teardown episode, the recent Mind of the Engineer Study provides a view of your perception of the engineering mind: What you think of you, and what you think others think of you. There are some surprises, some affirmations, and of course some fun twists. Read More...

Teardown: The nuances of variable-frequency drives

Get an inside view of induction-motor control by varying frequency using PWM. Read More...

The Scrubbing Bubbles power sprayer

A brilliant design costs you only pennies per spritz. Read More...

The 24V, 300W, BLDC Kollmorgen motor integrated controller

A motor mixes mechanical and electrical beauty with questionable thermal design. Read More...

The Tektronix 1101 oscilloscope-probe power supply

A mechanical design is at once a masterpiece and an expensive expedient. Read More...

Bulldog Security RS82B remote-vehicle-starter system

Microprocessor-controlled relays let you start your car 100 yards away. Read More...

The 15W Fender Squier guitar amplifier

Replacing all of the potentiometers makes a scratchy old amp sound great again. Read More...

The Schauer TB10012 battery charger

A 30-year-old nonworking battery charger makes a perfect Prying Eyes candidate—and gets a new lease on life. Read More...

The West Bend No. 1 electric-frying-pan thermostat

Spray lubricant and contact cleaner save a dignified old product. Read More...

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Autonomous vehicles: Are they ready for road challenges yet?

There are many ongoing developments in software and electronic controls that are very promising to autonomous vehicle safety and ultimate implementation. Let’s take a look at some of these efforts. Read More...

Book Excerpt: Sevick’s Transmission Line Transformers, Chapter 9 Baluns

This chapter excerpted from Sevick’s Transmission Line Transformers describes the balun as a subset of transmission line transformers with an in-depth treatment of most used types. Read More...

An investigation of distortion in a voltage controlled amplifier, Part 1

One of the more common building blocks of a voltage controlled amplifier (VCA) is a differential pair amplifier. Read More...

Book review: Jerry Sevick’s Transmission Line Transformers

The following is a book review of what started out in 1987 as a compilation of research done on wideband transformers for matching vertical antennas to 50 ohm transmission lines. Read More...

Designs of small footprint audio distribution amplifiers, Part 2

Sometimes we may need to distribute audio signals to several rooms in the house or in the office. That is useful when we want to mask external noise or when we wish to create an appropriate environment. Read More...

Designs of small footprint audio distribution amplifiers, Part 1

Sometimes we may need to distribute audio signals to several rooms in the house or in the office. That is useful when we want to mask external noise or when we wish to create an appropriate environment. Read More...

Book Review: Classic analog design textbook by Professor Sergio Franco

Professor Franco has completed his Fourth Edition of “Design with Operational Amplifiers and Integrated Circuits”, a book targeted at Senior undergraduate and Graduate level university engineering courses as well as all levels of design engineers working in the field of electronics. Read More...

JESD204B Subclasses (part 2): Subclass 1 vs. 2, System Considerations

Part 2 of the series takes a closer look at the differences between subclass 1 and subclass 2. In particular, we will look at the challenges to meeting the deterministic latency related timing requirements, device clock speed limitations in subclass 2, and guidelines on which subclass is best for a given system application. Read More...

JESD204B Subclasses (part 1): Intro and Deterministic Latency

The intent of this “mini-tutorial” is to clarify the operational distinctions between the three JESD204B subclasses, and to provide the reader with a working knowledge on the implementation of their individual deterministic latency functionality. Read More...

Simplify analog circuit analysis with impedance and a signal flow graph

To model a physical component, you may need to add components for Series Resistance, Stray Capacitance, etc. If a Simulator is available, you can check the simulation values with measured circuit values. When the values match, you have a good circuit model.To model a physical component, you may need to add components for Series Resistance, Stray Capacitance, etc. If a Simulator is available, you can check the simulation values with measured circuit values. When the values match, you have a good circuit model. Read More...

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Intro to LTE-Advanced

How do we achieve higher capacity mobile phone performance with the LTE-Advanced (LTE-A) specification from the 3GPP? Read More...

Synth startup looks to the cloud

A team of UK engineers is aiming to create a world-leading audio company making a new generation of cloud-connected music synthesizers. Read More...

Fairchild acquisition of Xsens

I was not too impressed with all the talk I’ve heard but not much action---until now—Learning of the Xsens acquisition significantly reinforces my faith in Fairchild’s MEMS and sensor offerings and is in tune with what they have been promising. Read More...

Power supply oscillation

In a nutshell, the power supply problem was as sketched below. When it was assembled by that first company, it worked okay. When it was assembled by my company's "Manufacturing" people, the power supply oscillated at 10 MHz. Read More...

Test power ICs to survive radiation

In space, power-management ICs can be subjected to radiation. Testing can assure that a part will still function, even if the silicon structure is altered. Read More...

Intro to airborne radar

George Stimson’s Introduction to Airborne Radar is now in its third edition. Here’s a look at how SciTech worked with a team of radar and EW engineers to update the latest version of this venerable text. Read More...

Quick & dirty cable length & impedance measurement

Can't afford a full-blown TDR? Here are a few quick & dirty measurement tips. Read More...

Cirrus to take half the audio IC market, says report

Price pressure in the growing audio IC market is leading to consolidation and will continue, according to SensiAn Research. And it is happening top-down with the acquisition of Wolfson Microelectronics by Cirrus Logic. Read More...

Top ten MEMS microphone vendors ranked

Knowles made nearly $500 million of packaged MEMS microphone sales in 2013 and dominates a supply chain that focuses on keeping Apple and Samsung happy. Read More...

Can you identify this?

My colleagues and I are having some difficulty in identifying the strange-looking device in the photo. Read More...

Getting low-distortion sine waves from a loudspeaker

Distortion reduction in bass drivers has a long history, but apparently no one thought to try this method. Read More...

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