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posted in July 2003
LDO regulators offer 400-mV dropout
Product News  
7/30/2003   Post a comment
Sipex Corp.'s SPX-2950x family of low-dropout (LDO) linear regulators is said to provide output current of up to 5 amps, dropout of 400 millivolts typical and fast transient response.
Optocouplers maintain data integrity near high voltage noise
News & Analysis  
7/29/2003   Post a comment
Factories have noisy environments that can make transmitting data over long distances a nightmare ---- unless the noise can be eliminated at the receiver. High-speed optocouplers that can handle data rates of up to 15 Mbits/s can isolate high frequency signals typically found in the factory data transmission. A Fairchild apps engineer offers provide background information on optocouplers and some applications circuits.
TriQuint posts loss on 2% sales jump
News & Analysis  
7/24/2003   Post a comment
TriQuint Semiconductor Inc. posted sales of $72.8 million in the quarter, up 19 percent compared to the second quarter of 2002 and up 1.6 percent compared to the first quarter of 2003.
Wolfson recruiting after doubling sales
News & Analysis  
7/24/2003   Post a comment
Mixed signal semiconductor group Wolfson Microelectronics plc saw a 100 percent improvement in sales for the year ended 31st December 2002 to £22.4 million (about $35 million).
Peripherals add voice functionality to home appliances
News & Analysis  
7/22/2003   Post a comment
Voice solutions, with their relatively low cost and ease of integration, hold the promise of making appliances easier to use and more interactive, and presenting a more intuitive and comfortable experience for the consumer. From the July issue of Planet Analog magazine, Winbond engineers examine some of the technical issues and essential peripherals for building speech into microcontroller-based appliances.
AmberWave gets credit from GE Technology Finance
News & Analysis  
7/22/2003   Post a comment
AmberWave Systems Corp., a supplier of strained silicon technology, said Tuesday (July 22, 2003) that GE Technology Finance, a unit of the GE Structured Finance, has recently expanded its existing line of credit to AmberWave.
Overcoming 1394 asynchronous bandwidth limitations for consumer electronics devices
News & Analysis  
7/21/2003   Post a comment
When adding IEEE 1394 to CE devices, system design engineers need to be aware that the bus bandwidth is shared among all devices on the bus, writes TI apps engineers. With isochronous traffic, there are few bandwidth issues since the bandwidth is guaranteed, but asynchronous bandwidth is not guaranteed, they say. System designers must pay close attention to factors that affect asynchronous bandwidth when designing their systems.
Wireless for the Masses
News & Analysis  
7/13/2003   Post a comment
RF testing
News & Analysis  
7/11/2003   Post a comment
Confidence in Waterfall Curves guides noise analysis in wireless system test
News & Analysis  
7/11/2003   Post a comment
Factoring confidence and accuracy into the measurements for wireless systems can be somewhat complicated.
Challenges confront RFIC, WLAN testing
Design How-To  
7/11/2003   Post a comment
Like the prices of any products that compete largely in the consumer market, those of wireless devices such as LANs and cell phones are being squeezed constantly.
A marriage of design and test environments speed RF device characterization
News & Analysis  
7/9/2003   Post a comment
Many companies are forging links between design and test - using measurement data to hone the accuracy of simulation models, and simulation results to tune test suites and procedures. An alliance between Ansoft and National Instruments promises to speed characterization and modeling procedures for RF devices. This piece (originally intended for this week's EE Times InFocus section on RF test issues) offers an overview.
Fab utilization above 90% by year-end, says Gartner
News & Analysis  
7/9/2003   Post a comment
The semiconductor industry's utilization of wafer fab capacity should move back above 90 percent for the first time in three years in the first quarter of 2004 and remain there throughout the year, according to a forecast from market research firm Gartner Inc.
June sales down at UMC, half-year up 28%
News & Analysis  
7/9/2003   Post a comment
June 2003 sales revenue at foundry chip supplier United Microelectronics Corp. (UMC) was NT$7028 million (about $204 million) up 4.7 percent from the same month a year before and down 4.5 percent from sales revenue in May 2003, UMC said Wednesday (July 9, 2003).
Gartner quantifies back-end led 2003 spending revival
News & Analysis  
7/8/2003   Post a comment
Market research company Gartner Inc. is forecasting 2003 to be a growth year in capital expenditure with equipment for packaging and assembly scoring a 26 percent rise over 2002 and wafer fabrication equipment scoring a more modest 9 percent growth.
Nikon adds 193-nm, 248-nm steppers to range
News & Analysis  
7/8/2003   Post a comment
Nikon Corp. has developed three 'step-and-repeat' scanning photolithography systems, the company said Tuesday (July 8, 2003).
Second-order IIR Filters will support cascade implementations - 5 Part digital audio application tutorial
Design How-To  
7/1/2003   3 comments
It is possible to implement IIR filters of any order by cascading first- and second-order IIR sections. Today, as digital audio processors embodying this topology becomes commonplace in the market, the designer's challenge is to find a way to design coefficients for these to accomplish the overall filtering goal. This multi-part article series - by the knowledgeable and prolific Rusty Allred - brings together the basic information needed to design and implement a wide variety of audio filters. P
DC signal conditioning aids microcontroller readings
News & Analysis  
7/1/2003   Post a comment
Certain types of low-level DC signals can present a challenge when trying to digitize using the internal analog-to-digital Converter (A/D) commonly found on many microcontrollers. These A/Ds typically have limited operating range and reference selection, which forces designers to condition the signal prior to digitization. A Cypress apps engineer offers some insights for boosting low-level signals.

As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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