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Content posted in October 2003
Industry's Fastest 12V CMOS Amplifiers Drive High-Performance 16-Bit Data Converters
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10/31/2003   Post a comment
A family of low noise, high-speed 12V CMOS operational amplifiers are ideal for driving 16-bit analog-to-digital converters (ADCs), as well as active filter, transimpedance amplifier, optical networking and portable audio applications. They combine AC characteristics of 20MHz bandwidth, 30V/us slew rate, 6nV/rtHz noise and 0.0003% harmonic distortion.
The impact of signal reflections: Part 2 in the series on lost-link bandwidth
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10/29/2003   Post a comment
In part 1 of this series, signal integrity expert John Ellis indicated that attenuation, reflections and system noise have the potential to dramatically reduce link throughput. The first article reviewed issues surrounding attenuation. In this installment, Ellis discusses the impact of reflections on link bandwidth.
EMI from the Ground Up: DM and CM noise in Switching Power Supplies
Articles  
10/29/2003   1 comment
In part 4 of his continuing series on EMI effects in switching power supplies, Sanjaya Maniktala examines what he calls "a real power supply." Due to common mode and differential mode couplings, he sees EMI effects radiating through insulators and even enclosures. It's a bit spooky. See for yourself "where all the buzz is really coming from."
±0.5 Degree C Temperature Switches in SOT-23 Package
Articles  
10/28/2003   Post a comment
These analog temperature switches assert a logic signal when a preset temperature is reached. The devices feature ±0.5 degrees Celsius (typical) accuracy while consuming only 20mA of supply current. Temperature trip thresholds are factory set and available from +35 degrees C to +115 degrees C in 10 degree increments.
Programmable System-on-Chip (PSoC) Devices Combine Low-Power Digital and Instrumentation-Quality Analog Blocks, Flash, SRAM, M8 MCU, Clock--for under $2
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10/27/2003   Post a comment
Programmable System-on-Chip (PSoC) Devices Combine Low-Power Digital and Instrumentation-Quality Analog Blocks, Flash, SRAM, M8 MCU, Clock--for under $2
Fairchild Introduces the Industry's Smallest Low-Ohmic Analog Switches
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10/27/2003   Post a comment
Designed with less than 0.002% Total Harmonic Distortion (THD) for audio fidelity.
Temperature Sensing System Design
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10/24/2003   Post a comment
Today's engineers are required to design systems to measure temperature in order to accurately control other functions in their system. There are many different types of temperature sensors used today for a very wide range of temperatures. The author focuses on describing three temperature sensors used in systems for measurements ranging from about "50°C (or lower) to +125°C, and discusses the tradeoffs to each system.
Product Focus: A/D Converters
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10/23/2003   Post a comment
Facing customer pressure to reduce board space requirements and improve performance, makers of analog-to-digital converters are integrating signal-conditioning functionality into their products in hopes of furthering both objectives.
DFT—The Easier Way to Test Analog ICs
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10/22/2003   Post a comment
The article discusses testmode development, a specific DFT technique, for device testing in particular. The design can be dynamically configured to allow one or more independent functional blocks to be tested without the parasitic effects that occur in a full functional test. Testmode development comprises a device-specific circuitry that allows the device to enter a certain state, thereby giving the test/design engineer access to singular or particular device blocks. The article goes on to expl
Analog front ends eye flat displays
Articles  
10/10/2003   Post a comment
Xicor Inc.'s X98000 line of five high-speed analog front ends is said to provide the performance needed for high-resolution flat-panel monitors, LCD projectors and high-definition televisions.
'Rail-to-rail' for HDTV/RGB
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10/10/2003   Post a comment
Intersil Corp. is aiming two triple rail-to-rail amplifiers at high-definition digital television and high-speed RGB monitor applications that require low power consumption.
Mono amps run off a 2-V supply
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10/10/2003   Post a comment
STMicroelectronics' TS419 and TS421 mono audio amplifiers drive 16 to 32- ohms speakers and earpieces in cellular and cordless phones, PDAs and other portable appliances.
ChipCenter's Paul O'Shea does his own assessment
Articles  
10/10/2003   Post a comment
Analog Devices Inc. calls any amp above 50 MHz a high-speed amplifier, while everything between 25 MHz and 50 MHz is defined more by the parameters and design optimization.
Op-amp architecture claims better balance of trade-offs
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10/10/2003   Post a comment
Analog Devices Inc. today ushered in a new era for high-speed operational amplifiers with the introduction of an IC that minimizes two fundamental error sources in amplifier design: voltage noise and harmonic distortion.
Verifying Jitter Measurement Accuracy
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10/3/2003   Post a comment
Jitter measurements are becoming increasingly important in the characterization and qualification of high-speed computing and communication systems. Steven Draving of Agilent Technologies proposes two methods that quantify the accuracy of oscilloscope-based jitter measurements. It describes a method to determine the measurement floor when measuring a jitter-free signal, and it describes a method to verify the absolute accuracy when measuring a signal with a known amount of jitter.
Resistors values select cut-offs for 2nd and 4th order analog filters*
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10/2/2003   Post a comment
Every analog engineer knows a good op amp and some precise RC components will make sharp cutoff filter. The trick is repeating this in production with readily available resistors
18-bit serdes chips head for comms
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10/2/2003   Post a comment
National Semiconductor Corp. said its low-voltage differential signaling 18-bit serializer/deserializer (serdes) makes it simpler to design such networking and communication systems as third-generation basestations, wireless local-loop systems and broadband access equipment.




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The theoretical advantages of GaN-based power transistors are now being realized in mainstream system designs. Power supplies for data centers and telecom switching racks are two application areas where GaN transistors show significant improvement in comparison to systems using best-in-class Silicon-based Superjunction devices.
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