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TI's OPA388 Family | Featured Product Spotlight

403 views · Published 20 October 2017 · 1:44 · Indexed 10 November 2026

Channel: All About Circuits · 2017 · Science & Technology

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View full article: https://www.allaboutcircuits.com/new-industry-products/texas-instruments-opa388-precision-opamps-featured-product-spotlight/

TI's OPA388 family of precision op amps are the first zero-drift, zero-crossover, rail-to-rail opamps available. They deliver high precision and linearity across the entire input range, and they're targeted at test and measurement, medical and safety, and high-resolution data acquisition.

Zero drift is critical for small signal, high gain, precision applications, and TI’s topology also achieves the lowest 1/f noise for precision measurements at DC or low frequencies. The OPA388 has multiple stages, but the first stage has a set of switches that inverts the input on each half-cycle, and another set that corrects the signal polarity before the second stage. This effectively averages the offset error to zero at the first stage and maintains the correct polarity on the output.  This self-correcting technique results in an offset of just ±0.25 µV and offset drift of 5 nV/°C. For more information, as well as all the latest All About Circuits projects and articles, visit the official website at http://www.allaboutcircuits.com/

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