July 22, 2002[Forefront] Mixed-Signal IC Merges 14-Bit ADC With DSP In 0.18-μm CMOS
Audio IC supplier Wolfson Microelectronics of the U.K., partnered with Japan's Sanyo, is prepping a mixed-signal device for next-generation automotive entertainment systems. This audio chip will tap advances in the state-of-the-art 0.18-µm CMOS...
July 22, 2002[Forefront] Power MOSFETs Switch High-Side Load Intelligently
Tapping an advanced CMOS process and innovative circuit design, Advanced Analogic Technologies has readied a family of intelligent power control switches for cell phones, PDAs, and other portable consumer electronics. Built around p-channel...
July 22, 2002[Forefront] High-Bandwidth Analog Switches Set New Performance Levels
A line of 5-V analog switches from Siliconix boasts an order-of-magnitude improvement in performance over previous devices. Typical charge injection has been lowered to 1 pC, minimizing glitching and reducing noise, distortion, and leakage for...
July 22, 2002[New Products] PWM Motor Driver IC Handles ±1.5-A Continuous Current
Designed for pulse-width modulation (PWM) motor control, the A3948 integrates on-chip DMOS output transistors in an H-bridge configuration. Consequently, the motor driver chip can handle continuous currents of ±1.5 A and operating voltages up...
July 22, 2002[New Products] Current-Mode Controller Improves Conversion Efficiency
The NCP1205 is a pulse-width modulated (PWM) current-mode controller for high-voltage off-line power conversion applications. To cut electromagnetic interference (EMI) and turn-on losses, the NCP1205 operates in a true quasi-resonant (QR) valley...
July 22, 2002[New Products] Power-Supply Software Slashes Design Time
Version 4.0 of the PIExpert power-supply design software automates the design of single- and multiple-output flyback power supplies using the company's TOPSwitch and TinySwitch families. This PC-based software now offers a more intuitive user...
July 22, 2002[New Products] Power MOSFETs Achieve New Low In On-Resistance
Three power MOSFETs in tiny six-lead SC-89 packages reach a new low in on-resistance--less than 1 W. The single p-channel Si1039X and Si1037X offer an RDS(ON) of 165 and 195 mW, respectively, at a 4.5-V gate drive. Incorporating...
July 22, 2002[New Products] Hot-Swap Power Controller Eases PCI System Development
The TPS2345 integrated hot-swap power controller complies with the PICMG2.1 specifications for the PCI bus. It's designed to gradually power-up inserted PCI boards, detect load failures in PCI plug-in cards, remove power from failed boards, isolate...
July 8, 2002[Forefront] Dedicated Baseband Processor Breaks New Ground In 3G Designs
Greater computational complexity and the rising broadband demands of the evolving third-generation wireless standards are forcing developers to look beyond traditional digital signal processor (DSP) architectures. Since MOPS requirements for these...
June 24, 2002[Product Innovation] CMOS DC-DC Controller Tackles High Voltages
Pressure to speed designs to market without compromising reliability and performance isn't the only compelling reason to adopt more integrated voltage converters or controllers in power supplies. The ability to build smaller, lighter, and more...
June 24, 2002[New Products] Stereo Audio DAC For SACD Players Samples Up To 192 kHz
The AD1955 24-bit stereo audio digital-to-analog converter (DAC) is designed for use in high-end super audio CD (SACD) players and a variety of other consumer and professional equipment. Based on a multibit sigma-delta modulator, it provides 123 dB...
June 24, 2002[New Products] Low-Voltage Analog Switches Offer 19-Ω On-Resistance
The ISL5120/21/22/23 low-voltage analog switches boast an on-resistance as as low as 19 Ω, while their switching time is 28 ns for turn-on and 20-ns for turn-off. These 2.7- to 12-V (15-V max) single-supply units are offered as dual-SPST or...
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