The OPA863A and OPA2863A devices (OPAx863A) are low-power, unity-gain stable, rail-to-rail input and output, voltage-feedback operational amplifiers. These devices are trimmed in package to offer high-precision performance with a maximum input offset voltage of 95µV and offset drift of 1.2µV/°C for high accuracy measurements over temperature.
Consuming only 800µA per channel, the OPAx863A offer a gain-bandwidth product of 50MHz, slew rate of 100V/µs, and a voltage noise density of 6.3nV/√Hz. The rail-to-rail input stage with 2.7V supply operation is useful in portable, battery-powered applications. The rail-to-rail input stage is well matched for gain-bandwidth product and noise across the full input common-mode voltage range, enabling excellent performance with wide-input dynamic range.
The OPAx863A include overload power limiting to limit the increase in IQ with saturated outputs, thereby preventing excessive power dissipation in power-conscious, battery-operated systems. The output stage is short-circuit protected, making these devices conducive to ruggedized environments.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | OPAx863A High-Precision, 105MHz, Rail-to-Rail Input/Output Amplifiers datasheet (Rev. G) | PDF | HTML | Dec 24, 2024 |
| Application brief | High Speed Current Sensing for Data Center mCRPS Standards | PDF | HTML | Apr 7, 2026 | |
| Circuit design | Circuit for driving high-voltage SAR ADC with a buffered instrumentation (Rev. A) | PDF | HTML | Sep 20, 2024 | |
| Circuit design | Inverting circuit for high-to-low voltage level translation to drive ADC (Rev. A) | PDF | HTML | Sep 19, 2024 | |
| Circuit design | Driving a low-voltage single-ended SAR ADC circuit with high-voltage input (Rev. A) | PDF | HTML | Sep 19, 2024 | |
| Application brief | Higher accuracy using an external amplifier in ultrasonic flow measurement | Feb 5, 2019 | ||
| Design guide | High-Speed, High-Side Current Sense Reference Design | Jul 19, 2017 | ||
| Application note | ADC Input Protection | Sep 4, 2013 | ||
| Application note | A Walk Along the Signal Path (High-Speed Signal Path) | Mar 30, 2005 |
For additional terms or required resources, click any title below to view the detail page where available.
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOT-23 (DBV) | 5 | Ultra Librarian |
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