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Volume 49 ó May 2015

Timely Information

Application Notes

Circuits from the Lab

New-Product Briefs

Rarely Asked Questions

Technical Articles

Webcasts

  

Products

Amplifiers

Analog-to-Digital Converters

Application Specific

Audio and Video Products

Broadband

Clock and Timing

Digital-to-Analog Converters

Interface and Isolation

Linear Products

MEMS

Optical

Power Management

Processors and DSP

RF and Microwave

Sensors

Switches and Multiplexers

  

Analog Dialogue--Since 1967

Feature Articles: Products, Applications, Technology, Design Ideas, Tutorials, and Measurement Techniques

lvdt

Low-Power Synchronous Demodulator Design Considerations

This article looks at some design considerations for sensor signal conditioning using synchronous demodulation in systems with strict power and cost constraints. When carefully designed, analog systems are hard to beat for simplicity, low cost, and low power consumption. This architecture performs most of the signal processing in the analog domain.

nanovolt

No Pain, High Gain: Building a Low-Noise Instrumentation Amplifier with Nanovolt Sensitivity

Building a voltage measurement system with nanovolt sensitivity presents many design challenges. The best available op amps can achieve less than 1 nV/√Hz noise at 1 kHz, but the nature of low-frequency noise limits the achievable noise to about 50 nV p-p over a 0.1 Hz to 10 Hz band. A well-behaved low-noise in-amp simplifies system design and construction, and reduces residual errors due to common-mode voltage, power-supply fluctuations, and temperature drift.

murphy

Murphy Rules!

Why donít my amplifiers and converters work correctly in the published circuit?

input_protection

RF Sampling ADC input protection: Not black magic after all

To counter the risk from overvoltage stress, RF-sampling ADCs include circuitry that detects high thresholds, allowing the receiver to compensate by adjusting the gain with an automatic gain control (AGC) loop. With a pipelined ADC, however, the inherent latency associated with the architecture can briefly expose the input to a high level, potentially harming the ADC inputs. This article discusses a simple method that can augment the AGC loop to protect the ADC.

sensor board and CDC

Liquid Level Sensing Using Capacitive-to-Digital Converters

Procedures such as infusions and transfusions require exact amounts of liquid to be monitored, so they need an accurate, easy-to-implement method for sensing liquid level. This article describes the 24-bit capacitive-to digital converters and level-sensing techniques that enable high-performance capacitive sensing of liquid levels.

muntz

Muntzing can save cost, components, and even your sanity

Do I really need to match the impedance between both inputs of my amplifier?

...Recent Articles

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Analog Dialogue is the technical magazine of Analog Devices. It discusses products, applications, technology, and techniques for analog, digital and mixed-signal processing.

Copyright 1995- Analog Devices, Inc. All rights reserved.          ISSN 1552-3284