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Current sense amplifiers analog output

INA290-Q1

ACTIVE

AEC-Q100, 2.7-V to 120-V, 1.1-MHz, ultra-precise current sense amplifier in small (SC-70) package

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Data sheet

INA290-Q1

ACTIVE
Data sheet Order now

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 Automotive TI functional safety category Functional Safety-Capable 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 Automotive TI functional safety category Functional Safety-Capable Operating temperature range (C) -40 to 125
SOT-SC70 (DCK) 5 4 mm² 2 x 2.1
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • 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
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • 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

The INA290-Q1 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. It is in a highly space-efficient SC-70 package with a PCB footprint of only 2.0 mm × 2.1 mm. 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 INA290-Q1 is not only designed for DC current measurement, but also for high-speed applications (like 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 INA290-Q1 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 INA290-Q1 is available in the SC-70 package minimizing solution size area.

The INA290-Q1 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. It is in a highly space-efficient SC-70 package with a PCB footprint of only 2.0 mm × 2.1 mm. 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 INA290-Q1 is not only designed for DC current measurement, but also for high-speed applications (like 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 INA290-Q1 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 INA290-Q1 is available in the SC-70 package minimizing solution size area.
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Technical documentation

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Type Title Date
* Data sheet INA290-Q1 AEC-Q100, 2.7-V to 120-V, 1.1-MHz, Ultra-Precise Current Sense Amplifier datasheet (Rev. A) PDF | HTML 20 Nov 2020
Application note Current Sensing in an H-Bridge (Rev. C) PDF | HTML 15 Aug 2022
Application note Using a PCB Copper Trace as a Current-Sense Shunt Resistor PDF | HTML 25 Jan 2022
Technical article Solving the multidecade current-measurement challenge in your 48-V BMS application 14 Jun 2021
Technical article How current-sense amplifiers monitor satellite health 08 Feb 2021
Application note Improving Power Amplifier Efficiency with Current Monitors (Rev. A) PDF | HTML 29 Dec 2020
Functional safety information INA2x0-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 17 Nov 2020
EVM User's guide INA290EVM User's Guide 11 Oct 2019
Technical article A key to accurate system thermal management: monitoring both current flow and temperature 04 Oct 2018
Technical article System trade-offs for high- and low-side current measurements 01 Jun 2017

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, (...)
User guide: PDF
Not available on TI.com
Simulation model

INA290A1 PSpice Model

SBOMC14.ZIP (15 KB) - PSpice Model
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Simulation model

INA290A2 PSpice Model

SBOMC22.ZIP (14 KB) - PSpice Model
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Simulation model

INA290A3 PSpice Model

SBOMC23.ZIP (14 KB) - PSpice Model
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Simulation model

INA290A4 PSpice Model

SBOMC13.ZIP (15 KB) - PSpice Model
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Simulation model

INA290A5 PSpice model

SBOMC12.ZIP (14 KB) - PSpice Model
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Simulation model

TINA SPICE models for INA290 (Rev. A)

SBOMB26A.ZIP (50 KB) - TINA-TI Spice Model
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Simulation model

TINA-TI REFERENCE DESIGN for INA290 (Rev. A)

SBOMB25A.ZIP (69 KB) - TINA-TI Reference Design
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Calculation tool

CS-AMPLIFIER-ERROR-TOOL — Current sense amplifier comparison and error tool

This Excel calculator provides a comparison between two and five of our standard current sense amplifiers, delivering a chart containing the basic parameters of each device. This calculator also takes system condition inputs from users such as common-mode voltage, supply voltage, shunt resistor (...)
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Calculation tool

Current Sense Amplifier Comparison and Error Tool (Rev. E)

SBOR020E.ZIP (592 KB)
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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 (...)
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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 (...)
User guide: PDF
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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 (...)

Design guide: PDF
Schematic: PDF
Package Pins Download
SC70 (DCK) 5 View options

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