The INA117 is a precision unity-gain difference amplifier with very high common-mode input voltage range. The INA117 is a single monolithic IC consisting of a precision op amp and integrated thin-film resistor network. The device can accurately measure small differential voltages in the presence of common-mode signals up to ±200V. The INA117 inputs are protected from momentary common-mode or differential overloads up to ±500V.
In many applications, where galvanic isolation is not essential, the INA117 can replace isolation amplifiers. This design can eliminate costly isolated input-side power supplies and the associated ripple, noise, and quiescent current. The INA117 offers low nonlinearity of 0.001% and a wide bandwidth of 200kHz (CSO: SHE) or 500kHz (CSO: TID) (see specification note in Section 5).
The INA117 is available in 8-pin plastic mini-DIP and SO-8 surface-mount packages, specified for the –40°C to 85°C temperature range.
| Top-Dokumentation | Typ | Titel | Format-Optionen | Datum |
|---|---|---|---|---|
| * | Data sheet | INA117 High Common-Mode Voltage Difference Amplifier datasheet (Rev. C) | PDF | HTML | 12 Jan 2026 |
| Application brief | Offset Correction Methods: Laser Trim, e-Trim, and Chopper (Rev. D) | PDF | HTML | 05 Dez 2024 | |
| Application note | INA117 and INA149 Differential Input Range (Rev. A) | PDF | HTML | 04 Jun 2020 | |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | 28 Mär 2017 | ||
| More literature | A High-Voltage Bidirectional Current Source | 19 Dez 2013 | ||
| Application note | AC Coupling Instrumentation and Difference Amplifiers | 27 Sep 2000 | ||
| Application note | Extending the Common-Mode Range of Difference Amplifiers | 27 Sep 2000 | ||
| Application note | Implementation and Applications of Current Sources and Current Receivers | 27 Sep 2000 | ||
| Application note | Input Filtering The INA117 ±200V Difference Amplifier | 27 Sep 2000 | ||
| Application note | ±200V Difference Amplifier with Common-Mode Voltage Monitor | 27 Sep 2000 |
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| Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
|---|---|---|
| PDIP (P) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
| TO-CAN (LMC) | 8 | Ultra Librarian |
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Analog Engineer's Calc Installer
General calculator tool for analog design support.