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Content posted in May 2004
High quality audio amp for the home with minimal design effort
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5/28/2004   Post a comment
National Semi offers three new stereo audio amplifiers in its Overture line of products for home stereo systems. Check out the review by Editor Paul O'Shea on these newest audio amplifiers that feature quiet fade-in/fade-out mute mode circuitry for gradually bringing the sound up or down.
These differential amplifiers drive the complete range of A/D converters
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5/27/2004   Post a comment
Analog Devices' newest fully differential high-speed amplifiers are designed to deliver the industry's best combination of low noise, low distortion and wide dynamic range"ideal for driving high-speed, analog-to-digital converters.
The fastest 5-V fractional-unit load full duplex RS-485/422 transceiver?
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5/27/2004   Post a comment
Intersil announced two more LINEARLINK full-duplex RS-485/422 transceivers. The ISL4491E is the world's fastest 5-V, full-duplex, one-eighth fractional-unit load transceiver with 15-kV ESD protection. These new devices boost performance in industrial and commercial applications.
Class-D audio power amplifiers balanced just right for small LCD TVs
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5/26/2004   Post a comment
Providing liquid crystal display (LCD) TV manufacturers with the feature set required to meet high efficiency audio demands, TI announced two new stereo Class-D audio power amplifiers for 17 to 23 inch LCD-TVs. The two new devices feature efficient Class-D operation, driving up to 10W of continuous stereo output power with no external heat sink.
Pin-compatiblility makes upgrading ADCs simple
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5/26/2004   Post a comment
Texas Instruments announced five new members of the ADS5500 high-speed analog-to-digital converter (ADC) family. The ADS5500 family now consists of three 14-bit ADCs and three 12-bit ADCs available in speeds of 80, 100 and 125 MSPS. The pin-compatible family of ADCs provides customers with an easy upgrade path. Designers now have a range of resolutions, speed and performance options tailored for their application requirements.
The mighty zener
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5/26/2004   Post a comment
We are by now sadly conditioned to expecting that nothing good is ever going to come our way, at least not easily and cheaply, writes Sanjaya Maniktala in the latest installment of his power supply design column. Surprise, surprise: The gate-source zener on your power FET " a couple of cents " can really save your bacon on safety issues.
8-bit A/D converter achieves best-in-class linearity at 250 MSPS
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5/25/2004   Post a comment
Analog Devices' new 8-bit analog-to-digital converter (ADC) achieves a conversion rate of 250 MSPS while maintaining a differential nonlinearity (DNL) of +/- 0.25 LSB, two times better than competitive ICs with comparable sample rates.
Free software download helps speed A/D converter design
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5/24/2004   Post a comment
Analog Devices today announced the launch of its ADIsimADC(TM) software design tool that allows systems designers to simulate analog-to-digital converter (ADC) performance, speeding the evaluation and design process. The software is available as a free download from the ADI website.
Platform Challenges and Opportunities for Handsets in the Emerging Wireless Lifestyle
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5/24/2004   Post a comment
Listen in as Samsung's Ivan Greenberg opines what he thinks is happening in the wireless world. For example, over the next several years, wireless carriers will rollout new multimedia services at an unprecedented pace. These media-rich services will place new requirements on the platforms that power handsets. While the semiconductor technology to enable these new services has been available for some time on large PC platforms, commercialization of this technology for wireless handsets will under
To guard (band)... or not to guard? That is the question
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5/20/2004   Post a comment
Printed circuit boards allow you place shielding around sensitive signal conditioning circuitry. The question is: Will this screw up the signal you're trying to read with its' own impedance hurdles? In the latest installment of his popular trouble-shooting column, "A Call I Took Last Week," Bill Klein talks about the consequences of reading a low current from a high-impedance source... and answers some reader questions raised by his last column.
Serial interface 8-digit driver ideal for bar-graph displays, industrial controllers, and LED matrix display
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5/7/2004   Post a comment
Austriamicrosystems has launched the AS1100, an LED driver for seven segment numeric displays of up to eight digits. It features a shutdown current of 50μA and an operating current of less than 500μA.
10 Mbps and 250 kbps transceivers are drop-ins with high-performance
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5/7/2004   Post a comment
RS-485/422 transceivers, the ISL8489E and the ISL8491E. These new transceivers are drop-in upgrades from competing parts of similar nomenclature and offer full 15 kV ESD protection.
Converter smooths the way to direct IF sampling to 500 MHz
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5/6/2004   Post a comment
Editor Paul O'Shea reviews Linear Technologies 12- and 14-bit A/D converter that focuses on applications for base stations by helping to eliminate an intermediate frequency down conversion stage. O'Shea says it will do that yet still keep the distortion at a low level.
Tutorial on PLLs: Part 2
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5/6/2004   1 comment
Have to design with a PLL? This two-part series provides you with the basics and theories needed to implement a PLL in a communication design.
Tutorial on PLLs: Part 1
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5/5/2004   Post a comment
Have to design with a PLL? This two-part series provides you with the basics and theories needed to implement a PLL in a communication design.
The digitization of analog and RF circuits
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5/3/2004   Post a comment
When discussing the integration of analog and RF into digital system-on-chips, it is usually analog that emerges as the most important. However, changes in digital processing are shifting that focus. During the past several years, designers have been working to design simpler analog and RF systems by transferring resources and operations to the digital domain, particularly in the case of wireless basestation design.




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