Product details


Common mode voltage (Max) (V) 110 Common mode voltage (Min) (V) -4 Input offset (+/-) (Max) (uV) 20 Input offset drift (+/-) (Typ) (uV/C) 0.025 Gain (V/V) 100, 20, 200, 50, 500 Gain error (%) 0.15 Gain error drift (+/-) (Max) (ppm/°C) 10 CMRR (Min) (dB) 140 Bandwidth (kHz) 1300 Supply voltage (Max) (V) 20 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 2.25 Number of channels (#) 1 Comparators (#) 0 Features Low-side Capable, 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-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other Current sense amplifiers analog output


  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40 °C to +125 °C, TA
  • Functional Safety-Capable
  • Wide common-mode voltage:
    • Operational voltage: −4 V to +110 V
    • Survival voltage: −20 V to +120 V
  • Excellent CMRR:
    • 160-dB DC-CMRR
    • 85-dB AC-CMRR at 50 kHz
  • Accuracy:
    • Gain:
      • Gain error: ±0.15% (maximum)
      • Gain drift: ±10 ppm/ °C (maximum)
    • Offset:
      • Offset voltage: ±15 µV (typical)
      • Offset drift: ±0.05 µV/ °C (typical)
  • Available gains:
    • INA293A1-Q1, INA293B1-Q1 : 20 V/V
    • INA293A2-Q1, INA293B2-Q1 : 50 V/V
    • INA293A3-Q1, INA293B3-Q1 : 100 V/V
    • INA293A4-Q1, INA293B4-Q1 : 200 V/V
    • INA293A5-Q1, INA293B5-Q1 : 500 V/V
  • High bandwidth: 1.3 MHz
  • Slew rate: 2.5 V/µs
  • Quiescent current: 1.5 mA
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The INA293-Q1 is a ultra-precise current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –4 V to 110 V. The negative common-mode voltage allows the device to operate below ground, thus accommodating precise measurement of recirculating currents in half-bridge applications. The combination of a low offset voltage, small gain error and high DC CMRR enables highly accurate current measurement. The INA293-Q1 is not only designed for DC current measurement, but also for high-speed applications (ex. Fast over-current protection) with a high bandwidth of 1.3 MHz and an 85-dB AC CMRR (at 50 kHz).

The INA293-Q1 operates from a single 2.7-V to 20-V supply, drawing 1.5 mA of supply current. The INA293-Q1 is available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address wide dynamic range current-sensing applications.

The INA293-Q1 is specified over an operating temperature range of −40 °C to +125 °C and is offered in a space-saving SOT-23 package with two pin-out variants.

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Technical documentation

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Type Title Date
* Data sheet INA293-Q1, AEC-Q100, –4-V to 110-V, 1.3-MHz, Ultra-Precise Current Sense Amplifier datasheet (Rev. B) May 10, 2021
Technical article Solving the multidecade current-measurement challenge in your 48-V BMS application Jun. 14, 2021
Application note High-Side Motor Current Monitoring for Over-Current Protection (Rev. B) Feb. 23, 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 High-Side Drive, High-Side Solenoid Monitor With PWM Rejection (Rev. C) Dec. 04, 2020
Functional safety information INA293-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA (Rev. A) Nov. 05, 2020
Application note Difference Between an Instrumentation Amplifier and a Current Sense Amplifier Apr. 03, 2020
Application note Evaluating Current Sensing Amplifiers in Body Control Modules Using Simulation Dec. 16, 2019
User guide INA293EVM User's Guide (Rev. A) Dec. 12, 2019
Technical article A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Application note Benefits of Intergated Low Inductive Shunt for PWM Applications Jun. 17, 2017
Technical article System trade-offs for high- and low-side current measurements Jun. 01, 2017
Application note Precision LED Brightness and Color Mixing With Discrete Current Sense Amplifiers Feb. 28, 2017
Application note Low-cost current-shunt monitor IC revives moving-coil meter design Apr. 18, 2006

Design & development

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

Hardware development

document-generic User guide

This is a small module with 10 completely independent boards that can be broken off by the user. Ten schematically identical boards for each of the five gain variation and two pinout variations of the INA293 with inputs up to 110V common mode and 5A (on board shunt) input capability. Each board (...)

  • Easy to test INA293 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 and two pin outs.

Design tools & simulation

SBOMAZ2A.ZIP (43 KB) - TINA-TI Spice Model
SBOMAZ3A.TSC (612 KB) - TINA-TI Reference Design
SBOMAZ5A.ZIP (590 KB) - PSpice Model
SBOMBG6.ZIP (36 KB) - PSpice Model
SBOMBG7.ZIP (25 KB) - PSpice Model
SBOMBG8.ZIP (25 KB) - PSpice Model
SBOMBG9.ZIP (25 KB) - PSpice Model
SBOMBH0.ZIP (26 KB) - PSpice Model
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 (...)
  • 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
  • (...)
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
SBOR020C.ZIP (568 KB)

Reference designs

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 document-generic User guide
Design files

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 5 View options

Ordering & quality

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  • MSL rating/Peak reflow
  • MTBF/FIT estimates
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  • Qualification summary
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Support & training

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