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The OPA698 is a wideband, unity-gain stable voltage-feedback op amp that offers bipolar output voltage limiting. Two buffered limiting voltages take control of the output when it attempts to drive beyond these limits. This new output limiting architecture holds the limiter offset error to ±10mV. The op amp operates linearly to within 20mV of the output limit voltages.
The combination of a narrow nonlinear range and the low limiting offset allows the limiting voltages to be set within 100mV of the desired linear output range. A fast 1ns recovery from limiting ensures that overdrive signals will be transparent to the signal channel. Implementing the limiting function at the output, as opposed to the input, gives the specified limiting accuracy for any gain, and allows the OPA698 to be used in all standard op amp applications.
Nonlinear analog signal processing will benefit from the ability of the OPA698 to sharply transition from linear operation to output limiting. The quick recovery time supports high-speed applications.
The OPA698 is available in an industry standard pinout SO-8 package. For higher gain, or transimpedance applications requiring output limiting with fast recovery, consider the OPA699.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | Unity Gain Stable, Wideband Voltage Limiting Amplifier datasheet (Rev. D) | 30 Dec 2008 | |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 28 Mar 2017 | ||
| Application note | RLC Filter Design for ADC Interface Applications (Rev. A) | 13 May 2015 | ||
| Application note | ADC Input Protection | 04 Sep 2013 | ||
| Application note | Video Designs Using High-Speed Amplifiers (Rev. A) | 03 Feb 2005 | ||
| Application note | Noise Analysis for High Speed Op Amps (Rev. A) | 17 Jan 2005 | ||
| Application note | ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers | 22 Apr 2004 | ||
| Application note | Measuring Board Parasitics in High-Speed Analog Design | 07 Jul 2003 |
For additional terms or required resources, click any title below to view the detail page where available.
The DEM-OPA-SO-1A demonstration fixture helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.
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| Package | Pins | Download |
|---|---|---|
| SOIC (D) | 8 | View options |
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