The OPAx333 series of CMOS operational amplifiers use a proprietary auto-calibration technique to simultaneously provide very low offset voltage (10 µV, maximum) and near-zero drift over time and temperature. These miniature, high-precision, low quiescent current amplifiers offer high-impedance inputs that have a common-mode range 100 mV beyond the rails, and rail-to-rail output that swings within 50 mV of the rails. Single or dual supplies as low as 1.8 V (±0.9 V) and up to 5.5 V (±2.75 V) can be used. These devices are optimized for low-voltage, single-supply operation.
The OPAx333 family offers excellent CMRR without the crossover associated with traditional complementary input stages. This design results in superior performance for driving analog-to-digital converters (ADCs) without degradation of differential linearity.
The OPA333 (single version) is available in the 5-pin SOT-23, SOT, and 8-pin SOIC packages, while the OPA2333 (dual version) is available in the 8-pin VSON, SOIC, and VSSOP packages. All versions are specified for operation from –40°C to 125°C.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | OPAx333 1.8-V, microPower, CMOS Operational Amplifiers, Zero-Drift Series datasheet (Rev. E) | PDF | HTML | Dec 17, 2015 |
| Application brief | Offset Correction Methods: Laser Trim, e-Trim, and Chopper (Rev. D) | PDF | HTML | Dec 5, 2024 | |
| Circuit design | Low-power, bidirectional current-sensing circuit (Rev. B) | PDF | HTML | Oct 2, 2024 | |
| E-book | An Engineer’s Guide to Designing with Precision Amplifiers | Apr 29, 2021 | ||
| Technical article | Designing with low-power op amps, part 1: Power-saving techniques for op-amp circu | PDF | HTML | Feb 2, 2021 | |
| Application brief | Low-Power, Small-Size, High-Side Current Monitoring | Jun 3, 2020 | ||
| Application brief | High-Performance 16-bit PWM to 4- to 20-mA DAC for Field Transmitters | Mar 26, 2020 | ||
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | PDF | HTML | Mar 28, 2017 | |
| Application note | OPA333, OPA2333 EMI Immunity Performance (Rev. A) | Oct 31, 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 |
|---|---|---|
| VSON (DRB) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
| VSSOP (DGK) | 8 | Ultra Librarian |
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