• Understand and characterize envelope-tracking power amplifiers

  Gerard Wimpenny, Nujira Ltd, May 10, 2012
  In contrast to fixed-supply power amps, the performance of an envelope-tracking power amplifier is not self-contained and requires substantially more data to predict system performance.  More

• Signal-powered switch connects devices

  James Dean, National Research Council, Ottawa, ON, Canada, May 10, 2012
  Use a switch to selectively connect a terminal, personal computer, or any other originating device to one of four receivers.  More

• Remote display technology lets users fully experience cloud content

  Raj Pawate, Distinguished member, Technical Staff, Texas Instruments Incorporated, May 9, 2012
  The cloud can provide content almost anywhere, anytime. Often, however, the device where the content ends up is not ideal for viewing, sharing and experiencing it. Remote display technology provides an effective path around this dilemma.  More

• High-performance HF transceiver design: A ham's perspective

  Doug Grant, May 3, 2012
  Designers of equipment for radio amateurs face the same problems as designers of most other systems - squeezing the last dB of performance from off-the-shelf components. Some ingenious designs have evolved, using analog, digital and DSP technology.  More

• PCB and ESR subtleties in switching regulator and LDO designs

  Kern Wong, Principal Applications Engineer, Texas Instruments, April 27, 2012
  This article focuses on some key layout subtleties and points out several frequently overlooked design parameters and design considerations relating to ESR, load capacitors, vias, and feedback networks.  More

• OEM-ready wireless sensor site launches

  Steve Taranovich, Senior Technical Editor, April 26, 2012
  Monnit Corporation has launched OEMSensors.com with a new line of OEM-ready wireless sensors, gateways and back-end monitoring software targeting broad lines of commercial, industrial and M2M applications.  More

• Understanding the basics of setup and hold time

  Deepak Behera, Karthik Rao C.G. and Deepak Mahajan, Freescale Semiconductor, April 19, 2012
  Setup and hold times are treated as intrinsic properties of an element. However, it is the very existence of setup and hold time that often confuses us. Here are the cause of setup and hold time within a sequential element (flip-flop) and a look at the operation of the flop.  More

• Smack attack

  Terry Staler, Specialty Concepts Inc, April 19, 2012
  Amid a maze of wires, a junior engineer must find out why his company's telephone-usage-monitoring equipment is failing.  More

• Design calculations for robust I2C communications

  Chris Parris, Senior Applications Engineer and Jonathan Dillon, Senior Applications Engineer, Memory Products Division, Microchip Technology Inc., April 18, 2012
  The I2C bus topology relies on correctly sized resistance pull-ups for reliable, robust communications. Getting these values wrong can lead to erroneous bus conditions and transmission errors caused by noise or changes in temperature and operating voltages, and by variations between devices.  More

• 18-bit, 2.5Msps SAR ADC achieves no latency

  Steve Taranovich, Senior Technical Editor, April 13, 2012
  Provides 99.8dB SNR with flexible analog input ranges.  More

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