The INA790x is a voltage output, current sense amplifier with an integrated shunt resistor of 400µΩ. The INA790x is designed to monitor bidirectional current over a common-mode range of –4V to 110V, independent of the supply voltage. Adjustable gain option assists in optimizing the system dynamic range. The integration of the Kelvin connected shunt resistor with a zero-drift chopped amplifier provides calibration equivalent measurement accuracy, ultra-low temperature drift performance of ±35ppm/°C, and an optimized layout for the sensing resistor.
The INA790x is designed with enhanced PWM rejection circuitry to suppress disturbance from large (dv/dt) common-mode transients and enable real-time continuous current measurements in switching systems. The continuous measurements are critical for inline current measurements in a motor-drive application, and for solenoid valve control application.
This device operates from a single 2.7V to 5.5V power supply, drawing a maximum of 4.25mA of supply current. All versions are specified over the extended operating temperature range (–40°C to +125°C), and are available in a 15-pin VQFN package.
| Top-Dokumentation | Typ | Titel | Format-Optionen | Datum |
|---|---|---|---|---|
| * | Data sheet | INA790x –4V to 110V, Bidirectional, Ultra-Precise, Current Sense Amplifier With Enhanced PWM Rejection and 75A EZShunt Technology datasheet (Rev. B) | PDF | HTML | 14 Jul 2025 |
| Application brief | Marketing Selection Guide For Sensing in Humanoids (Rev. A) | PDF | HTML | 04 Jun 2026 | |
| Functional safety information | INA79X-Q1 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 05 Dez 2025 | |
| Application note | Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers | PDF | HTML | 18 Nov 2024 |
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Das Evaluierungsmodul INA79xx (EVM) enthält den bidirektionalen, ultrapräzisen Strommessverstärker, INA790x–4 V bis 110 V, mit 75 A EZShunt™ -Technologie. Der INA79x verfügt außerdem über verbesserte PWM-Unterdrückung. Das EVM bietet eine Plattform zur Vereinfachung der Verstärkungs- und (...)
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 (...)
| Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
|---|---|---|
| VSON (DEK) | 15 | Ultra Librarian |
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Calculator installer
General calculator tool for analog design support.