amplifier

Analog Devices, Inc. (ADI), a world leader in amplifiers and semiconductors for signal processing applications, introduced the AD8295, a highly integrated precision instrumentation amplifier front-end that uses 50 percent less board space than competing amplifier solutions for industrial and instrumentation applications.

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Two new zero-drift operational amplifiers (op amps) from National Semiconductor Corp. offer the industry's lowest input voltage noise (11 nV/sqrt Hz at a gain of 1000 V/V) and high DC accuracy for sensor interface applications operating at low frequencies and low supply voltage.

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Renesas Technology Europe today announced the R2J15116FP, a compact, high-performance digital amplifier supporting IIS*1 digital audio signal input with a built-in 24-bit audio DSP. It is intended for use in thin flat-screen TVs employing LCD or plasma display panels.

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ON Semiconductor has introduced the NCP2991, a new generation of Class AB audio amplifier dedicated to providing superior audio performance without sacrificing power efficiency for portable and wireless applications.

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Maxim Integrated Products introduces the MAX9928/MAX9929 low-cost, current-sense amplifiers for monitoring charge and discharge currents. These devices use a rail-to-rail input stage to achieve a wide, -0.1V to 28V, input common-mode range. This unique architecture offers true ground sensing and high-side current sensing in the same IC with unidirectional or bidirectional (charge/discharge) current-monitoring capability.

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Linear Technology introduces a family of four high performance dual fixed frequency lowpass active filters/amplifiers targeting a wide range of wireless communications and industrial signal processing equipment applications.

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Texas Instruments Incorporated introduced an analog-input audio subsystem that integrates TI's field-proven stereo Class-D power amplifier and stereo DirectPath headphone amplifier into one compact package. The audio subsystem is highly flexible, enabling customers to choose different input-to-output configurations and program design parameters to optimize audio performance.

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Maxim Integrated Products introduces the MAX9744, the industry's first 20W stereo Class D speaker amplifier to operate from a 4.5V to 14V power supply. The wide supply range minimizes the cost of portable designs by reducing component count and allowing the use of a smaller battery pack. The MAX9744 provides ample output power throughout the power-supply voltage range, making it ideal for MP3 docking stations, gaming consoles, and flat-panel televisions.

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Providing an unmatched combination of precision, low power and low supply voltage, Texas Instruments Incorporated introduced the industry's lowest power zero-drift instrumentation amplifier. The device features the lowest quiescent current and lowest input bias current versus the nearest competition, as well as an impressive power-to-noise ratio, very low offset voltage/drift and 1.8 V operation. Consequently, the INA333 improves accuracy and stability while extending battery life in a variety of precision, low-power applications such as portable medical, handheld instrumentation, weigh scales and data acquisition.

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Texas Instruments Incorporated introduced a highly advanced, filter-free, stereo Class-D amplifier that provides a 1.7-W per channel output drive capability across an 8-Ohm load and improves overall volume versus traditional Class-D products. The new amplifier incorporates programmable dynamic range compression (DRC) that automatically adjusts the audio to the desired loudness range while protecting the speaker and preventing clipping and distortion. In addition, the chip's flexibility and intuitive support tools ease design and speed time to market for manufacturers of wireless handsets, personal navigation devices, notebook PCs and portable DVD players.

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