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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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Texas Instruments Incorporated introduced its second-generation, 15-W, stereo analog-input Class-D amplifiers with single-ended outputs. These highly-efficient devices eliminate components to reduce total solution size and cost in HDTVs and other consumer audio electronics. Innovative features address single-ended design challenges to ensure robust and reliable audio performance in LCD, plasma and DLP® TVs and other home audio products.

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Maxim Integrated Products introduces the MAX2065, the industry's only fully programmable, multistate, analog and digital IF/RF variable-gain amplifier (VGA). This single, easy-to-control device delivers an unparalleled combination of VGA performance and component integration. Operating at 50MHz to 1000MHz, the MAX2065 provides unique "rapid fire" gain selection for four customized attenuation states, fast 25ns digital switching, and very low digital VGA amplitude overshoot/undershoot. It is an ideal choice for "fast-attack" AGC (automatic gain control) circuits found in all 2.5G/3G/4G wireless infrastructure transceivers, including GSM/EDGE, CDMA, WCDMA, LTE, and WiMAX%u2122 applications.

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Analog Devices, Inc. extended its family of differential amplifiers by introducing a new device with the industry's best distortion performance at the lowest power consumption for engineers who need maximum performance when driving high-resolution ADCs (analog-to-digital converters) in communications infrastructure, instrumentation and other high-speed equipment. Optimized to drive today's high-performance 14- and 16-bit converters, the ADA4939 differential amplifier consumes less than 120 mW of power on a single 3.3-V supply, while achieving 82-dB SFDR (spurious-free dynamic range) at 70 MHz.

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PowerWise LMP223x Family Consumes less than 16 uW per Channel with TCVOS as low as /- 0.4 uV per Degree Celsius

February 25, 2008 National Semiconductor Corp. (NYSE:NSM) today introduced a family of micropower precision amplifiers that provides guaranteed maximum offset voltage drift over temperature (TCVOS) as low as /- 0.4 microvolts per degree Celsius (uV/C). These 16 uW per channel operational amplifiers (op amps) feature the industry%u2019s lowest TCVOS, along with low offset voltage, quiescent current and bias current to enable a high level of system accuracy, extended battery life and long-term stability in portable systems and battery-powered sensor interface products.

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