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TI offers 'lowest-power' voltage feedback amp

Posted: 28 Mar 2008 ?? ?Print Version ?Bookmark and Share

Keywords:voltage feedback amplifier? slew rate?


Texas Instruments Inc. has introduced a high-speed, unity gain stable, voltage feedback amplifier that features over 90 percent less power than devices with comparable slew rates in the market. The device's architecture provides designers with high bandwidth and slew rate, coupled with a very low quiescent current, making it well-suited for portable instrumentation, active filters and ADC buffers.

Says TI, OPA2889 represents a significant evolution in unity gain stable, voltage feedback amplifiers, offering an excellent combination of bandwidth and slew rate capabilities while consuming only 460?A of quiescent current per channel. Coupled with the ultralow power, the high bandwidth of 115MHz and slew rate of 250V/?s, allows customers to process data faster and more efficiently. The device also includes a power down feature, enabling even further power savings by reducing the quiescent current to 18?A/channel when not in use.

Along with the bandwidth and slew rate capabilities, the OPA2889 offers a flexible single supply voltage range of 2.6-12V or dual supply voltage range of 1.3V to 6V. It also provides a large output swing of 8Vpp and output current of 40?A. These features minimize signal distortion to increase fidelity while giving designers greater flexibility.

The latest offering extends TI's high-speed, low-power voltage and current feedback amplifier offerings including those summarized below.

OPA2889 is available in a SOIC-8 and MSOP-10 package. Suggested resale pricing is $1.35 in quantities of 1,000. Samples and evaluation modules of OPA2889 are available today.

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