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Content posted in February 2004
Smallest, lowest power DAB module to date makes debut at 3G in Cannes
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2/24/2004   Post a comment
Samsung Electro-Mechanics, a provider of electronic tuners, and Frontier Silicon, a supplier of DAB chips, have announced the two companies have cooperated to develop a miniature low power DAB receiver module specifically targeted for integration into mobile phone handsets and other communications devices.
Low-noise op amps offer rail-to-rail outputs and 3V operation
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2/24/2004   Post a comment
Catch up on two families of operational amplifiers recently introduced by Linear Technologies and reviewed by editor Paul O'Shea. These devices consume only 50% as much power as competitive devices and deliver ultra low noise performance, rail-to-rail outputs and fully specified 3.3V operation.
Silicon thermistors provide more accurate temperature sensing, optimizing system performance
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2/22/2004   Post a comment
Andigilog announced the SiMISTOR family of linear and highly accurate silicon thermistors. The products, manufactured using mature CMOS processes, can replace traditional thermistors in high-volume cell phones, PCs and peripherals, PDAs, and consumer device applications. The family also displaces thermistors in traditional industrial applications, such as thermostats and portable medical devices.
Triple current feedback amplifiers series features bandwidths up to 600 MHz
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2/20/2004   Post a comment
The latest addition to Intersil's new high-speed operational amplifier portfolio, the Elantec EL536x family includes 200 Megahertz (MHz), 400 MHz, and 600 MHz bandwidth triple current feedback amplifiers. The devices are designed for high-resolution display, RGB video and other high performance video applications.
Low-cost amplifier provides headroom to prevent audio holes
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2/20/2004   Post a comment
Philips introduces the TDA8947J amplifier to provide manufacturers of audio applications a low cost solution for high performance audio. It features the patented overload protection and enables headroom to prevent audio holes under extreme conditions such as low load impedances.
An E-Waste Call to Arms
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2/19/2004   Post a comment
The electronics revolution continues to bring us gee whiz tools, making our lives easier and even more fun. But it doesn't come free. We have created so many electronic toys, tools and gizmos that we are awash in them with no letup in sight. We are now facing an overflow of old, used, and broken electronics equipment in our waste stream.
Integrating Power Management and Audio Blocks on the Same Chip
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2/19/2004   Post a comment
Modern mobile phone design increasingly requires high performance audio processing circuitry to enable inclusion of features such as digital audio players and digital quality voice. One of the key challenges in keeping the electronics sub-system cost low is to integrate this capability with the power management circuit on the same piece of silicon. This article describes the issues involved in each of the sub-systems and how the integration is implemented to combine the two blocks in pure CMOS
On the Design of Higher-order Shelf Filters " Part 1 of 3
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2/19/2004   Post a comment
Rusty Allred, TI's filter design maven is back, this time with an analysis of high-order shelf filters. While although other authors have provided information on the design of higher-order (orders greater than two) shelf filters, he says, the design requires use of uncommon mathematics and numerical techniques. This paper streamlines the approach while exploiting the power of Matlab to make the design of these filters more accessible. In part 1, Rusty describes the theory behind a MatLab impleme
Designing analog circuits in CMOS
Articles  
2/18/2004   1 comment
In advance of the this year's ISSCC conference, two Dutch engineers offered EE Times and Planet Analog insights on how to maintain high-voltage tolerance - essential for analog - on highly-scaled CMOS processes. The morning session in which this paper was formally presented had a standing-room-only attendance.
Sounds like worst-case, but there's danger lurking in the middle
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2/18/2004   Post a comment
Sanjaya Maniktala describes a PC power supply failure that seemed widespread in Japan, but seldom occurred in the U.S. Was it something in the sushi? he asks. It turns out, the failures are related to the way components are specified and tested. This amusing and instructive piece kicks off a new column on power supply design. Sanjaya's comments will appear monthly at Planet Analog online.
Smallest current output digital-to-analog converter delivers 14-bit accuracy
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2/18/2004   Post a comment
Devices is optimizing high-performance applications by delivering the smallest current output D/A converters with resolutions from 8 to 14 bits. The new converter family features SOT-23 packaging and multiplying bandwidths in excess of 10 MHzapplications.
Single-chip environmental monitoring and control devices enable flexible power and thermal management
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2/17/2004   Post a comment
SMSC announced three new single chip environmental monitoring and control (EMC) devices. These solutions target mobile, desktop, workstation, server and embedded applications where optimum power, flexibility and cost are critical drivers to success.
Data converters support motor control for industrial and automotive applications
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2/17/2004   Post a comment
Analog Devices introduced a trio of converters for motor control applications that require high precision. These converters solve challenges associated with current and voltage monitoring, optical encoder feedback, and resolver-to-digital conversion.
A/D converter achieves 7.5 ENOB at 1.6 GHz
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2/17/2004   Post a comment
National Semiconductor Corporation announced a CMOS analog-to-digital converter that requires 75 percent less power than most comparable products on the market. The 8-bit ADC081000 digitizes signals at sampling rates up to 1.6 GHz while consuming just 1.4 watts from a 1.9 volt nominal supply.
Software Tool Aids Design of Active Filters
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2/13/2004   Post a comment
Easing the design process for its customers, TI announced the new version of its FilterPro design tool that helps designers create active filters that reduce unwanted signal frequencies.
Filter-free Class-D audio power amplifier now available in chip scale package
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2/12/2004   Post a comment
Enabling wireless and personal digital assistant (PDA) designers to conserve board space while gaining efficiency, TI announced what it says is the smallest and highest performance filter-free Class-D mono audio power amplifier in the market.
Those pesky unused inputs
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2/11/2004   Post a comment
My caller was looking for some suggestions to improve his design. He had a quad op amp in the circuit but only needed three of the functions. What should he do with unused inputs? Bill Klein is back with a new installment of his every-popular "A Call I took Last Week" column.
Comparators Rival Respect of Sibling Amps
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2/9/2004   Post a comment
Comparators don't get no respect, or at least they may be underrated and under utilized. The reason may simply be because its more famous sibling, the op amp, usually gets the spot light. Read what's new, what to look out for, and how comparators can help you.
Analog front-end revs up motor control applications
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2/6/2004   Post a comment
TI introduced a complete analog front end designed specifically for motor control applications. The ADS7869 integrates three 12-bit, 1 mega samples per second analog-to-digital converters (ADCs), including seven sample-and-hold circuits and twelve fully differential input channels.
Eight-channel, high-speed ADCs with serial LVDS interface has 70.5 SNR
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2/4/2004   Post a comment
TI says they have established a new standard for integration, performance and power with the introduction of an eight-channel family of 10- and 12-bit A/D converters. Check out editor Paul O'Shea's review to get the details.
CODEC provides audio, touch-screen functions for smartphones
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2/2/2004   Post a comment
Wolfson Microelectronics plc and palmOne, Inc. revealed that the Wolfson WM9705 CODEC is an enabling device for the Treo 600 smartphone from palmOne, Inc. The Treo 600 is the mobile phone combining PDA, phone and messaging functionality.
Eight-channel analog/digital converter offers impressive SNR and power-per-channel capabilities
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2/2/2004   Post a comment
Establishing a new standard for integration, performance and power, Texas Instruments Incorporated announced a family of octal, 10- and 12-bit, high-speed analog-to-digital converters. The company says it features serial low-voltage differential-signaling outputs and consumes 123mW of power per channel at 65 MSPS and 138mW/channel at 70 MSPS.
12-bit 80MSPS A/D converter ready for wireless and telecom
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2/2/2004   Post a comment
The Philips TDA8768B is a biCMOS 12-bit Analog-to-Digital converter optimized for EDGE and W-CDMA cellular infrastructures, professional telecommunications and other applications such as advanced FM radio and professional imaging.




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