Design Center

Analog Design

News and design information for analog design engineers, including those working on signal-chain, power, interface, and RF issues.
Top Story
Top Story

Design mingles with test across domains 7/9/2009

The lines between electrical-engineering disciplines are continually blurring, with traditional test products taking on design chores and vice versa.

News

Analog Devices, Infineon collaborate on air-bag systems 6/25/2009

Analog Devices and Infineon Technologies have collaborated to produce next-generation automotive-air-bag systems. In the immediate future, the two companies will produce a hardware platform using parts from each company’s current offerings. Designers will be able to adopt this platform to begin development of code using a well-defined software interface.

SIwave 4.0 addresses signal and power integrity 6/17/2009

Part of the Ansys’ Ansoft family of products, SIwave (signal-integrity-wave) Version 4.0 includes new features for signal-integrity, power-integrity, and electromagnetic-compatibility testing.

Chip allows isolated USB 5/28/2009

Analog Devices’ new ADuM4160 bidirectional isolator provides UL (Underwriter Laboratories) 1577-rated, 5-kV isolation for 1.5 or 12-Mbps USB (Universal Serial Bus)-data lines.

Two-terminal current source supplies 200 mA. 5/19/2009

Linear Technology Corp’s new LT3092 two-terminal current source can supply 0.5 to 200mA of current at a 1% initial accuracy.

Op amp has offset calibration to 200 μV 5/18/2009

Microchip Technology’s new MCP651/2/5 operational amplifier targets use in microphone preamplifiers, optical-detector circuitry, digital scales, industrial instrumentation, H-bridge drivers, bar-code scanners, transmission-line drivers, and medical equipment for patient monitoring and ultrasound functions.
In-Depth

Diagnostic ultrasound gets smaller, faster, and more useful 6/25/2009

The signal path in ultrasound machines is a multichannel transmitter-receiver system with blazingly fast data rates. Engineers need to weigh a host of options in designing these complex machines.

Characterize optocouplers in the feedback loop of high-frequency power converters 6/19/2009

Optocouplers will add a phase shift that can make your power supply unstable. Here is how you can measure and compensate the loop.

Stress out; strain gauges in 5/28/2009

The careful selection and application of strain gauges can ensure good results from this difficult measurement.

Use alternative approaches to evaluate dc/dc synchronous buck converters 4/23/2009

Linear systems, online tools, and full simulations help you analyze your designs.

Online tools home in on analog design 4/9/2009

Analog design gets easier and more convenient, thanks to free web applications and downloadable tools.
Experts

Holding on 7/9/2009

The tristate feature can help you extend the hold time of your driver.

Is your amplifier offset way out of whack? 6/25/2009

Consider trying to explain offset error by reexamining your amplifier's specifications.

Can’t see the forest ... 6/25/2009

Analog design is all about trade-offs, so system-design expertise is vital to any company offering analog chips.

Endpoint distortion 6/11/2009

The end termination improves short-term response, but round-trip reflections may interfere with subsequent bits.

The non-negotiable single-supply operational amplifier 5/28/2009

Analog devices that serve applications such as high-resolution delta-sigma or SAR (successive-approximation-register) converter systems are feeling the crunch from amplifiers that have difficulty with achieving good rail-to-rail input performance.
DesignIdeas

Convert signals to proper logic levels 2/5/2009

Reduce digital-voltage levels to those compatible with microcontrollers.

Flying capacitor and negative time constant make digitally programmable-gain instrumentation amplifier 2/5/2009

Digitally programmable-gain instrumentation amplifiers prevent common-mode noise and variable signal amplitudes.

Voltage doubler improves accuracy 2/5/2009

A transistor's low saturation voltage results in less loss.

Linear wind-power meter compensates for temperature 11/13/2008

Using a free-spinning anemometer for wind speed and a diode-connected transistor for temperature sensing, this meter measures the wind power available for "green" power generation.

Oscillator uses dual-output current-controlled conveyors 11/13/2008

Varying the bias current of dual-output current-controlled conveyors controls the frequency of oscillation of the circuits.
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Blog

Anablog

Matt Berggren on Altium PCB design software

When I wrote up my blog post about Altium circuit board layout software I had not received confirmation that the $995 competitive upgrade for their... 

Analog Devices has a new differential amplifier calculator

I got a press release from ADI saying they have just released a calculator to help you design differential amplifiers. This downloadable calculator... 

Altium schematic deal and dealing with piracy

I received two interesting missives from the Altium circuit board layout company. The first was a deal to do a competitive upgrade from Orcad Captu... 



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