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Product details

Parameters

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 open-in-new Find other Current sense amplifiers analog output

Package | Pins | Size

SOT-SC70 (DCK) 5 4 mm² 2 x 2.1 open-in-new Find other Current sense amplifiers analog output

Features

  • 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
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Description

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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NEW INA280-Q1 ACTIVE AEC-Q100, 2.7-V to 120-V, 1.1-Mhz current sense amplifier in small (SC-70) package Functionally identical with reduced accuracy at a lower price

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) Nov. 20, 2020
Technical article Solving the multidecade current-measurement challenge in your 48-V BMS application Jun. 14, 2021
Technical article How current-sense amplifiers monitor satellite health Feb. 08, 2021
Application note Current Sensing in an H-Bridge (Rev. B) Feb. 05, 2021
Application note Improving Power Amplifier Efficiency with Current Monitors (Rev. A) Dec. 29, 2020
Application note INA2x0-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA Nov. 17, 2020
User guide INA290EVM User's Guide Oct. 11, 2019
Technical article A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Technical article System trade-offs for high- and low-side current measurements Jun. 01, 2017

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
25
Description
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 (...)
Features
  • Easy to test INA290 with differential voltage or shunt resistor.
  • Pads and sockets allow quick and easy implementation of SMD filtering.
  • Breakable panels lets customer experiment and test with all gain variants.

Design tools & simulation

SIMULATION MODEL Download
SBOMB25.TSC (138 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SBOMB26.ZIP (38 KB) - TINA-TI Spice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SIMULATION TOOL Download
SPICE-based analog simulation program
TINA-TI 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 (...)
document-generic User guide
CALCULATION TOOL Download
SBOR020C.ZIP (568 KB)

Reference designs

REFERENCE DESIGNS Download
Current Shunt Monitor with Transient Robustness Reference Design
TIDA-00302 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 (...)

document-generic Schematic
Design files

CAD/CAE symbols

Package Pins Download
SC70 (DCK) 5 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

Support & training

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