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The OPA3691 sets a new level of performance for broadband, triple current-feedback op amps. Operating on a very low 5.1mA/ch supply current, the OPA3691 offers a slew rate and output power normally associated with a much higher supply current. A new output stage architecture delivers a high output current with minimal voltage headroom and crossover distortion. This gives exceptional single-supply operation. Using a single +5V supply, the OPA3691 can deliver a 1V to 4V output swing with over 120mA drive current and 150MHz bandwidth. This combination of features makes the OPA3691 an ideal RGB line driver or single-supply Analog-to-Digital Converter (ADC) input driver.
The OPA3691‘s low 5.1mA/ch supply current is precisely trimmed at 25°C. This trim, along with low drift over temperature, ensures lower maximum supply current than competing products. System power may be further reduced by using the optional disable control pin. Leaving this disable pin open, or holding it HIGH, gives normal operation. If pulled LOW, the OPA3691 supply current drops to less than 150µA/ch while the output goes into a high impedance state. This feature may be used for power savings.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | Triple Wideband, Current-Feedback Operational Amplifier With Disable datasheet (Rev. E) | 02 Jul 2008 | |
| Technical article | 3 common questions when designing with high-speed amplifiers | PDF | HTML | 17 Jul 2020 | |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 28 Mar 2017 | ||
| User guide | DEM-OPA-SO-3A User's Guide (Rev. A) | 20 Jun 2006 | ||
| User guide | DEM-OPA-SSOP-3A User's Guide (Rev. A) | 20 Jun 2006 | ||
| Analog Design Journal | Expanding the usability of current-feedback amplifiers | 28 Feb 2005 | ||
| Analog Design Journal | Active filters using current-feedback amplifiers | 25 Feb 2005 | ||
| Application note | Noise Analysis for High Speed Op Amps (Rev. A) | 17 Jan 2005 | ||
| Application note | Stabilizing Current-Feedback Op Amps While Optimizing Circuit Performance | 28 Apr 2004 | ||
| Application note | Current Feedback Amplifiers: Review, Stability Analysis, and Applications | 20 Nov 2000 |
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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 |
|---|---|---|
| SOIC (D) | 16 | Ultra Librarian |
| SSOP (DBQ) | 16 | Ultra Librarian |
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Analog Engineer's Calc Installer
General calculator tool for analog design support.