Product details

Common mode voltage (Max) (V) 120 Common mode voltage (Min) (V) 2.7 Input offset (+/-) (Max) (uV) 12 Input offset drift (+/-) (Typ) (uV/C) 0.2 Gain (V/V) 100, 20, 200, 50, 500 Gain error (%) 0.15 Gain error drift (+/-) (Max) (ppm/°C) 5 CMRR (Min) (dB) 140 Bandwidth (kHz) 1100 Supply voltage (Max) (V) 20 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 0.6 Number of channels (#) 1 Comparators (#) 0 Features Ultra precise Rating Catalog Operating temperature range (C) -40 to 125
Common mode voltage (Max) (V) 120 Common mode voltage (Min) (V) 2.7 Input offset (+/-) (Max) (uV) 12 Input offset drift (+/-) (Typ) (uV/C) 0.2 Gain (V/V) 100, 20, 200, 50, 500 Gain error (%) 0.15 Gain error drift (+/-) (Max) (ppm/°C) 5 CMRR (Min) (dB) 140 Bandwidth (kHz) 1100 Supply voltage (Max) (V) 20 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 0.6 Number of channels (#) 1 Comparators (#) 0 Features Ultra precise Rating Catalog Operating temperature range (C) -40 to 125
SOT-SC70 (DCK) 5 4 mm² 2 x 2.1
  • Wide common-mode voltage:
    • Operational voltage: 2.7 V to 120 V
    • Survival voltage: −20 V to +122 V
  • Excellent CMRR:
    • 160-dB DC
    • 85-dB AC at 50 kHz
  • Accuracy
    • Gain:
      • Gain error: ±0.1% (maximum)
      • Gain drift: ±5 ppm/°C (maximum)
    • Offset:
      • Offset voltage: ±12 µV (maximum)
      • Offset drift: ±0.2 µV/°C (maximum)
  • Available gains:
    • A1 devices: 20 V/V
    • A2 devices: 50 V/V
    • A3 devices: 100 V/V
    • A4 devices: 200 V/V
    • A5 devices: 500 V/V
  • High bandwidth: 1.1 MHz
  • Slew rate: 2 V/µs
  • Quiescent current: 370 µA (per channel)
  • Wide common-mode voltage:
    • Operational voltage: 2.7 V to 120 V
    • Survival voltage: −20 V to +122 V
  • Excellent CMRR:
    • 160-dB DC
    • 85-dB AC at 50 kHz
  • Accuracy
    • Gain:
      • Gain error: ±0.1% (maximum)
      • Gain drift: ±5 ppm/°C (maximum)
    • Offset:
      • Offset voltage: ±12 µV (maximum)
      • Offset drift: ±0.2 µV/°C (maximum)
  • Available gains:
    • A1 devices: 20 V/V
    • A2 devices: 50 V/V
    • A3 devices: 100 V/V
    • A4 devices: 200 V/V
    • A5 devices: 500 V/V
  • High bandwidth: 1.1 MHz
  • Slew rate: 2 V/µs
  • Quiescent current: 370 µA (per channel)

The INAx290 is an ultra-precise, current-sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from 2.7 V to 120 V. The ultra-precise current measurement accuracy is achieved thanks to the combination of an ultra-low offset voltage of ±12 µV (maximum), a small gain error of ±0.1% (maximum), and a high DC CMRR of 160 dB (typical). The INAx290 is not only designed for DC current measurement, but also for high-speed applications (such as fast overcurrent protection, for example) with a high bandwidth of 1.1 MHz (at gain of 20 V/V) and an 85-dB AC CMRR (at 50 kHz).

The INAx290 provides the capability to make ultra- precise current measurements by sensing the voltage drop across a shunt resistor over a wide common- mode range from 2.7 V to 120 V. The INAx290 devices come in highly space-efficient packages. The single-channel INA290 device is featured in the SC-70 package, the dual-channel INA2290 device is available in the MSOP-8 package, and the quad-channel INA4290 device is available in the 4 mm x 4 mm QFN package.

The INAx290 operates from a single 2.7-V to 20-V supply with the single channel device only drawing 370-µA supply current per channel (typical). The devices are available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. The low offset of the zero-drift architecture enables current sensing with low ohmic shunts as specified over the extended operating temperature range (−40°C to +125°C).

The INAx290 is an ultra-precise, current-sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from 2.7 V to 120 V. The ultra-precise current measurement accuracy is achieved thanks to the combination of an ultra-low offset voltage of ±12 µV (maximum), a small gain error of ±0.1% (maximum), and a high DC CMRR of 160 dB (typical). The INAx290 is not only designed for DC current measurement, but also for high-speed applications (such as fast overcurrent protection, for example) with a high bandwidth of 1.1 MHz (at gain of 20 V/V) and an 85-dB AC CMRR (at 50 kHz).

The INAx290 provides the capability to make ultra- precise current measurements by sensing the voltage drop across a shunt resistor over a wide common- mode range from 2.7 V to 120 V. The INAx290 devices come in highly space-efficient packages. The single-channel INA290 device is featured in the SC-70 package, the dual-channel INA2290 device is available in the MSOP-8 package, and the quad-channel INA4290 device is available in the 4 mm x 4 mm QFN package.

The INAx290 operates from a single 2.7-V to 20-V supply with the single channel device only drawing 370-µA supply current per channel (typical). The devices are available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. The low offset of the zero-drift architecture enables current sensing with low ohmic shunts as specified over the extended operating temperature range (−40°C to +125°C).

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Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

INA290EVM — INA290 current-sensing evaluation module

This is a small module with 5 completely independent boards that can be broken off by the user. Five schematically identical boards for each of the five gain variation of the INA290 with inputs up to 110V common mode and 5A (on board shunt) input capability. Each board provides test points for VS (...)
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Simulation model

INA290 TINA-TI Reference Design

SBOMB25.TSC (138 KB) - TINA-TI Reference Design
Simulation model

INA290 TINA-TI SPICE Model

SBOMB26.ZIP (38 KB) - TINA-TI Spice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Reference designs

TIDA-00302 — Current Shunt Monitor with Transient Robustness Reference Design

This high-side current shunt monitor is used to measure the voltage developed across a current-sensing resistor when current passes through it.

Additionally, an external protection circuit is implemented to provide surge and fast-transient protection and demonstrate the different immunity levels to (...)

Package Pins Download
SC70 (DCK) 5 View options

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