The OPAx211 series of precision operational amplifiers achieves very low 1.1-nV/√Hz noise density with a supply current of only 3.6 mA. This series also offers rail-to-rail output swing, which maximizes dynamic range.
The extremely low voltage and low current noise, high-speed, and wide output swing of the OPAx211 series make these devices an excellent choice as a loop filter amplifier in PLL applications.
In precision data acquisition applications, the OPAx211 series of operational amplifiers provides 700-ns settling time to 16-bit accuracy throughout 10-V output swings. This ac performance, combined with only 125 µV of offset and 0.35 µV/°C of drift over temperature, makes the OPAx211 series a great choice for driving high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of high-resolution digital-to-analog converters (DACs).
The OPAx211 series is specified over a wide dual-power supply range of ±2.25 to ±18 V, or for single-supply operation from 4.5 to 36 V.
The OPA211 is available in the small SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8 packages. The dual version OPA2211 is available in a SON-8 (3 mm × 3 mm) or an SO-8 PowerPAD™ package. This series of operational amplifiers is specified from TA = –40°C to +125°C.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | OPAx211 1.1-nv/√Hz Noise, Low Power, Precision Operational Amplifiers datasheet (Rev. L) | PDF | HTML | Jan 30, 2020 |
| Application note | How to Measure Total Harmonic Distortion of an Op-Amp and THD + N Fundamentals | PDF | HTML | Nov 9, 2023 | |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | PDF | HTML | Mar 28, 2017 | |
| Application note | OPA211, OPA211A, OP2211, OPA2211A EMI Immunity Performance | Sep 24, 2012 |
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 |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
| WSON (DRG) | 8 | Ultra Librarian |
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