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TI op amp uses E-trim technology

Posted: 16 Dec 2004 ?? ?Print Version ?Bookmark and Share

Keywords:texas instruments? ti? operational amplifier? op amp? burr-brown?

Texas Instruments Inc. (TI) released a high-precision, high-speed 12V CMOS operational amplifier from its Burr-Brown product line that utilizes e-trimthe company's new trimming technology that calibrates offset voltage and temperature drift during the final steps of manufacturing.

The new OPA727 is designed for applications requiring excellent dynamic characteristics such as active filters, transimpedance amplifiers, audio, test equipment and process control, said the press release. "The OPA727 delivers excellent offset voltage (150?V max) and extremely low offset voltage drift (1.5?V/C) through e-trim,&quot boasted Frank Haupt, strategic marketing engineer of TI's high-performance amplifier products. &quto;To correct for offset drift, the op amp is trimmed over temperature."

E-trim technology is used to trim the OPA727's offset voltage and offset voltage drift over temperature after packaging. According to TI, this significantly improves accuracy compared to traditional laser trimming methods by avoiding parameter shifts that occur during plastic molding.

The company added that the OPA727 also provides excellent AC performance. Its 20MHz bandwidth, 30V/?s slew rate, 600ns settling time, 6nV/rtHz noise and 0.0003 percent harmonic distortion make it suitable for driving fast, 16bit ADCs.

The input common-mode range extends to ground for true single-supply operation and output swings to within 150mV of the rails, maximizing dynamic range. The shutdown version (OPA728) reduces the quiescent current to 6?A (typically) and features a digital ground reference pin for easy interface to standard logic levels in dual-supply applications. Both the OPA727 and OPA728 are fully specified and tested over the full 4V to 12V or 2V to 6V supply range.

The OPA727 (single version) and OPA728 (single with shutdown) are packaged in MSOP-8 and 3x3mm DFN-8. The OPA2727 (dual) is packaged in 3x3mm DFN-8 and SO-8. These versions are available today from TI and its authorized distributors. A quad version, the OPA4727, will be available in 1Q 2005. All are specified for operation from -40C to +125C.

The OPA727 and OPA728 are priced starting from $1.45, and the OPA2727 is available for $2.20. All quotes are suggested resale pricing for 1,000-piece orders.




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