January 20, 2003[TechView: Analog & Power] “Amp In A Mike ” Replaces FET
The single FET in an electret microphone's housing may soon become an endangered species. National Semicon-ductor Corp. of Santa Clara, Calif., has two amplifiers that replace the junction FET (JFET) in current electret mikes. A high-gain...
January 6, 2003[Technology Report] Analog/Mixed-Signal: Overview
Last year was supposed to ring in the "Recovery" after the worst year in semiconductor history, yet everyone is still holding their breath for the economy to revive. Most analysts have reported that semiconductor sales grew a meager 1% in 2002, but...
January 6, 2003[Technology Report] Analog/Mixed-Signal: Analog-To-Digital Converters
The analog-to-digital converter (ADC) segment is closely aligned with the overall drive to perform as much signal processing in the digital domain. The drivers and trends are similar to the pressures that affect the logic areas. Converters are moving...
January 6, 2003[Technology Report] Analog/Mixed-Signal: Digital-To-Analog Converters
Like their analog-to-digital converter (ADC) counterparts, digital-to-analog converters (DACs) are moving toward higher speeds and resolutions at a lower operating power. The primary drivers are higher speed, greater resolution, and lower power....
January 6, 2003[Technology Report] Analog/Mixed-Signal: Amplifiers
As basic building blocks, the equally ubiquitous amplifier and comparator can be designed into a host of circuits. The wide range of amplifier functions and large number of variants within each category indicate the high degree of specialization in...
January 6, 2003[Technology Report] Analog/Mixed-Signal: More
Amplifiers and data converters dominate the analog and mixed-signal markets, but lots of other functions are crucial within this industry segment. Space constraints prevent addressing all of them, so we'll focus on two of the fastest growing areas: RF...
December 23, 2002[Technology Report] Programmable Logic: To HDL Or Not To HDL?
Strategies for EDA tool usage will change course as gate levels, and ultimately costs, rise in programmable logic designs. For designs below 25,000 gates, the basic tools from logic vendors and many standard design tools are available for very little...
October 28, 2002[Product Innovation] BiCom-III Process Triples Speed, Halves Noise
Dubbed BiCOM-III, TI's recently announced silicon-germanium (SiGe) complementary bipolar-CMOS manufacturing process integrates both NPN- and PNP-type bi-polar transistors. The result of this first-ever integration is speeds up to three times faster...
October 28, 2002[Forefront] 100-kHz Op Amps Need Very Little Quiescent Current
A family of operational amplifiers featuring a gain-bandwidth product of 100 kHz typically requires an ultra-low quiescent current of 600 nA and a maximum quiescent current of just 1 µA. Microchip Technology's MCP614-XA family consists...
October 28, 2002[Product Innovation] Superfast Op Amps Break 2-GHz Bandwidth Barrier
Until now, very high-speed Operational Amplifiers (OP AMPS) have offered a top bandwidth of about a gigahertz. The addition of silicon germanium (SiGe) to a high-speed bipolar-CMOS process results in a family of fixed-gain, voltage-feedback op amps...
October 14, 2002[Technology Report] Programmable Analog Functions Are Going Mainstream
We have always had programmable analog circuits. Any circuit that makes outputs change as a function of inputs is in some way programmable. Examples include gain change as a function of voltage or current (automatic gain control, or AGC) and frequency...
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