The OPA891 and OPA2891 (OPAx891) are ultra-low voltage noise, high-speed voltage feedback amplifiers that are an excellent choice for applications requiring low voltage noise, including communications and imaging. The single-amplifier OPA891 and the dual-amplifier OPA2891 offer very good ac performance with 140MHz bandwidth, gain (G) = 2V/V, 105V/µs slew rate, and 70ns settling time (0.1%). The OPAx891 are unity-gain stable with 180MHz bandwidth. These amplifiers have a high drive capability of 200mA and draw only 7.5mA supply current per channel. With –100dBc of total harmonic distortion (THD) at f = 1MHz and a very low noise of 0.95nV/√Hz, the OPAx891 are designed for applications requiring low distortion and low noise such as buffering analog-to-digital converters.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | OPAx891 180MHz, 0.95nV/√Hz, Ultra-Low THD Operational Amplifiers datasheet (Rev. B) | PDF | HTML | 23 Jul 2024 |
| Application note | Noise Analysis for High Speed Op Amps (Rev. A) | 17 Jan 2005 |
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The amplifier performance development kit (PDK) is an evaluation module (EVM) kit to test common operational amplifier (op amp) parameters and is compatible with most op amps and comparators. The EVM kit offers a main board with several socketed daughtercard options to fit package needs, allowing (...)
The OPAMPEVM-SOIC is a general-purpose blank-circuit evaluation module (EVM) that simplifies development of surface-mount operational amplifiers. The design allows many different circuits to be constructed easily and quickly. The EVM has three circuit-development areas that can be snapped apart and (...)
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| HVSSOP (DGN) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
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Analog Engineer's Calc Installer
General calculator tool for analog design support.