The OPAx191 family (OPA191, OPA2191, and OPA4191) is a new generation of 36-V, e-trim™ operational amplifiers.
These devices offer outstanding dc precision and ac performance, including rail-to-rail input/output, low offset voltage (±5 µV, typ), low offset drift (±0.2 µV/°C, typ), and 2-MHz bandwidth.
Unique features, such as differential input-voltage range to the supply rail, high output current (±65 mA), high capacitive load drive of up to 1 nF, and high slew rate (5 V/µs), make the OPAx191 a robust, high-performance operational amplifier for high-voltage industrial applications.
The OPAx191 family of op amps is available in standard packages and is specified from –40°C to +125°C.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | OPAx191 36-V, Low-Power, Precision, CMOS, Rail-to-Rail Input/Output, Low Offset Voltage, Low Input Bias Current Op Amp datasheet (Rev. D) | PDF | HTML | Aug 4, 2021 |
| Application brief | Offset Correction Methods: Laser Trim, e-Trim, and Chopper (Rev. D) | PDF | HTML | Dec 5, 2024 | |
| Application brief | MUX-Friendly, Precision Operational Amplifiers (Rev. C) | PDF | HTML | Feb 8, 2022 | |
| Application brief | Low-Power, Small-Size, High-Side Current Monitoring | Jun 3, 2020 | ||
| Technical article | Simplify your bill of materials with high-voltage amplifiers | PDF | HTML | Apr 18, 2019 | |
| Application brief | Green-Williams-Lis: Improved Op Amp Spice Model | Jan 28, 2019 | ||
| Application brief | Multichannel Analog Input Modules for PLC Equipment | Jan 4, 2019 | ||
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | PDF | HTML | Mar 28, 2017 |
For additional terms or required resources, click any title below to view the detail page where available.
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This folder contains three tools to help in understandning and managing noise in cicuits. The included tools are:
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
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