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Product details

Parameters

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 Rating Automotive Operating temperature range (C) -40 to 125 open-in-new Find other Current sense amplifiers analog output

Package | Pins | Size

SOT-23 (DBV) 5 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
  • Wide common-mode voltage:
    • Operational voltage: −4 V to +110 V
    • Survival voltage: −20 V to +116 V
  • Excellent CMRR
    • 160-dB dc CMRR
    • 85-dB ac CMRR at 50 kHz
  • Accuracy
    • Gain
      • Gain error: 0.2% (maximum)
      • Gain drift: 10 ppm/°C (maximum)
    • Offset
      • Offset voltage: ±200 µV (maximum)
      • Offset drift: ±1 µV/°C (maximum)
  • 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
  • Bandwidth: 1 MHz
  • Slew rate: 3 V/µs
  • Quiescent current: 1.5 mA

All trademarks are the property of their respective owners.

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Description

The INA293-Q1 is a versatile, automotive, high-voltage, unidirectional, voltage-output, current-sense amplifier that senses voltage drops across external sense (shunt) resistors over a wide common-mode voltage range from –4 V to 110 V. The negative common-mode voltage allows the device to operate below ground, thus accommodating the precise measurement of a recirculating current in typical
h-bridge applications. The INA293-Q1 amplifier has a bandwidth of 1 MHz at gain of 20 V/V. The 1-MHz bandwidth in combination with a low offset of < 200 uV (max) provides fast settling response with accurate measurements in a large common-mode switching transients.

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 current-sensing applications.

The INA293-Q1 is specified over the operating temperature range of −40°C to +125°C, and is offered in a space-saving SOT-23 package.

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Sample availability

Preproduction samples are available (PINA293AxQDBVRQ1). Request now

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 14
Type Title Date
* Datasheet INA293-Q1 Automotive, 110-V Common-Mode, High-Voltage, High-Bandwidth, Zero-Drift, Unidirectional, Current-Sense Amplifier datasheet May 22, 2018
Application notes The Difference Between an Instrumentation Amplifier and a Current Sense Amplifie Apr. 03, 2020
Application notes Evaluating Current Sensing Amplifiers in Body Control Modules Using Simulation Dec. 16, 2019
User guides INA293EVM User's Guide (Rev. A) Dec. 12, 2019
Technical articles A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Application notes Current Sensing in an H-Bridge (Rev. A) Jul. 20, 2018
Application notes High-Side Drive, High-Side Solenoid Monitor With PWM Rejection (Rev. B) Jul. 20, 2018
Application notes Benefits of Intergated Low Inductive Shunt for PWM Applications Jun. 17, 2017
Technical articles System trade-offs for high- and low-side current measurements Jun. 01, 2017
Application notes Precision LED Brightness and Color Mixing With Discrete Current Sense Amplifiers Feb. 28, 2017
Application notes High-Side Motor Current Monitoring for Over-Current Protection (Rev. A) Dec. 01, 2016
Technical articles Why should you care about overcurrent protection in your system? Jun. 16, 2016
Technical articles How to get started with current sense amplifiers – part 2 May 26, 2015
Application notes 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

EVALUATION BOARDS Download
document-generic User guide
25
Description

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 (...)

Features
  • 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

SIMULATION MODELS Download
SBOMAZ2A.ZIP (43 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOMAZ3A.TSC (612 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBOMAZ5A.ZIP (590 KB) - PSpice Model
SIMULATION TOOLS 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 TOOLS 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

CAD/CAE symbols

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

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