Analog // Articles
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Telehealth→ June 2014
Measuring heart rate and blood oxygen levels for portable medical and wearable devices
The changes occurring in the medical and fitness fields, along with their associated electronic and wearable devices, can be called truly revolutionary. The demands of today’s healthcare device markets are many, varied, and challenging. Devices that were once primarily found in hospitals are now use... [read more]
Mixed signal→ November 2014The art and science of RF and mixed-signal design
Over the past few decades, mixed-signal integrated circuit (IC) design has been one of the most exciting and technically challenging segments of the semiconductor industry. Despite all of the advances that have occurred in the semiconductor industry over that time span, the one constant need is stil... [read more]
FPGAs→ January 2015Beamforming: FPGAs rise to the challenge
Several design approaches exist for implementing beamforming processing tasks, with options ranging from GPUs to multicore CPUs, DSPs, and FPGAs. The unique strengths of FPGAs make them an increasingly appealing choice for beamforming when compared to their counterparts.
Signal processing→ October 2018Newer 28 nm ADCs enable next-generation EW receiver systems
The high-speed ADC [analog-to-digital converter] is a primary design consideration in all wideband electronic warfare (EW) receivers; it largely determines system architecture and overall detect-and-observe capability.
Sensors→ September 2014Passive IR sensor front-end design
Conventional passive infrared (PIR) sensor application circuits contain numerous bulky passive components. Shrinking the electronics down to the size of the sensor element requires some new design thinking. This article describes an approach using digital signal processing and closed-loop control of... [read more]
DSP→ June 2014DSP capabilities of SoC FPGAs address emerging small cell requirements
The insatiable demand for increased communication bandwidth is driving the development of new wireless architectures and the deployment of a wide variety of new wireless infrastructure devices. Of the two key approaches – a centralized homogeneous network architecture and a distributed heterogeneous... [read more]
Sensors→ November 2014White Paper: Analog Signal Conditioning for Accurate Measurements
Q: Should I put some sort of circuit between my sensor and an analog-to-digital converter? A: Yes. You probably need some signal conditioning. The explanation in this paper goes on for a bit, but stay with it and you'll understand what you need and why you need it.
A/D converters→ December 2015White Paper: Critical Techniques for High-Speed A/D Converters in Real-Time Systems
An A/D (Analog-to-Digital) converter, frequently abbreviated as ADC, accepts an analog voltage at the input and produces a digital representation of that voltage at the output that's called a "sample". The two primary characteristics of A/Ds are the rate of conversion or sampling rate, expressed in ... [read more]
cognitive radio→ October 2014Cognitive radio's fate 'uncertain' as the spectrum battle plays out
The U.S. Federal Communications Commission (FCC) is attempting to find a regulatory fix – striking a balance between national defense and economics – to eliminate electromagnetic spectrum inefficiencies. For now, this is making the exact role cognitive radio technology will play in the U.S. military... [read more]
voltage references→ October 2014Shutting out the noise: Voltage references for precision analog signal paths in space applications
When designers are trying to select a component in the signal path of a satellite system, it is often difficult to find a device with both the radiation tolerance and accuracy required. Signal integrity is, after all, the key specification when designing an analog signal chain. The main causes of er... [read more]
Signal processing→ January 2014Digital channelizer implemented on COTS FPGA board: A flexible solution for military signal processing
One of the major challenges of modern military Digital Signal Processing (DSP) is dealing with the ever-widening bandwidth of digitized signals. Until fairly recently, analog-to-digital converters (A/D converters) were limited to only hundreds of MHz, so anything beyond that had to be dealt with usi... [read more]
radar→ January 2015Space Fence radar system to identify, track space junk
Space Fence, a fully digital S-band radar system, is being built for the U.S. Air Force by Lockheed Martin to better identify and track space junk to help protect military satellites and other space assets by preventing conjunctions and the creation of more debris – hurtling along at speeds of 17,50... [read more]
Real-time OS→ March 2005Fully functional isolated analog signal conditioners suitable for PC/104 boards
Until recently, users usually relegated signal conditioners externally to I/O boards. This configuration resulted in users adding peripheral electronic boards to their systems, substantially increasing both hardware costs and cabinet space requirements. To address these problems, Dataforth designed ... [read more]
Avionics Safety Certification→ February/March 2014MIL-STD-1553 IP cores challenge traditional IC implementation
Forty years since its release, MIL-STD-1553 is evolving from traditional Integrated Circuits (ICs) to Intellectual Property (IP) cores integrated with Field Programmable Gate Arrays (FPGAs). The advantages of IP core implementation include cost reduction, the ability to upgrade and adapt a design ov... [read more]
Analog→ November 2011Hot Chips will need more analog to support multicore
A common thread that ran through the 23rd Hot Chips conference presentations was the integration of more complex and higher performance analog circuits as an absolute requirement.
Analog→ November 2011National Semiconductor adds 16-bit and 24-bit sensor analog front ends
National Semiconductor Corp. has announced the availability of seven new 24-bit and 16-bit multi-channel sensor AFEs (analog front-ends) to enable designers to easilly configure signal paths from interface sensors to microcontrollers.
Astronomy→ Summer 2004PXI-Gigahertz FADCs help astronomers probe deep space using gamma rays
This article describes an example of using new technology and a new ultra fast analog-to-digital converter (ADC) to help study a heretofore unexplored region of the gamma ray spectrum.
Sensors→ August 2005Successful techniques for capturing analog signals for real-time signal processing
Signal processing systems consist of common functional blocks, from the sensor to the processor to “downstream” data recipients. Additionally, all such systems share a common denominator: the real world is analog, not digital. Capturing, sampling, filtering, and processing analog signals requires so... [read more]
CompactPCI→ February 20073U CompactPCI boards key for always on passenger infotainment
Small 3U CompactPCI boards are ruggedized to withstand vibration, shock, pressure, and temperature extremes.
Analog→ November 2011Conexant adds Keterex audio playback IC to launch new product line
Conexant has announced the launch of a new audio playback product line acquired from Keterex to play 8 KHz audio data directly to an external speaker via an on-chip digital audio processor and class-D amplifier.
Software Defined Radio (SDR)→ December 2015White Paper: Software Defined Radio Handbook (11th Edition)
SDR (Software-Defined Radio) has revolutionized electronic systems for a variety of applications including communications, data acquisition and signal processing. This handbook shows how DDCs (Digital Downconverters) and DUCs (Digital Upconverters), the fundamental building blocks of SDR, can replac... [read more]
Software-Defined Radio (SDR)→ March 2014White Paper: Software Defined Radio Handbook -- 10th Edition
New! Software Defined Radio Handbook The folks at Pentek, who wrote the book on software radio, are pleased to announce their recently released and expanded Software Radio Handbook. Downloaded thousands of times, the handbook has proved to be a useful technical reference for engineers. It's yours ... [read more]
Data acquisition→ Winter 2001Data Acquisition and control system for testing beverage vending machines
Using PXI and National Instruments' LabVIEW, Life Cycle Engineering developed and installed a high-channel-count data acquisition and control temperature and humidity in two test cells while acquiring, displaying, and storing up to 512 channels of analog data.
Software Defined Radio (SDR)→ February 2008SDR applications: One size does not fit all
In the choice of PMC/XMC or VXS, VITA's VXS is beating out the competition by providing more board and front-panel space, higher densities, improved analog performance, and more IP and I/O choices than XMCs or PMCs.
Analog→ November 2011TI claims industry's lowest power for NFC transceiver
TI is targeting its new NFC transceiver at infrastructure devices which communicate to NFC-enabled devices such as smartphones.
Unique applications→ Winter 2004Reconfigurable analog: The start of a revolution
Joel and Nathan introduce new dynamic analog capabilities.
Data acquisition→ May 2004Considerations in embedded data acquisition
This article discusses some important characteristics of analog input boards. The discussion is intended to assist in the selection of an analog input board for an embedded system.
SENSORS/CONTROL: Analog→ November 2005Smart sensor interface for industrial applications
Blocks forming a “smart” sensor interface with low- and high-voltage mixed-signal capabilities on a monolithic CMOS solution.
Transportation applications→ July 2004No wheels, no axles, no rails
In this article the authors outline elements required for successful implementation of the Guideway Monitoring System (GMS) for the world’s first Transrapid maglev train. These elements include the use of the CompactPCI bus, LabVIEW capability, and the support of special analog-digital conversion ca... [read more]
VITA/VSO→ April 2009VITA 42.0 receives ANSI recognition, VITA 46.14 tackles analog and RF on VPX
Get an update on the latest VITA standards' statuses and objectives with information provided by VITA technical director John Rynearson.
