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Analog current-sense amplifiers with integrated shunt resistor

INA253-Q1

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AEC-Q100, 80V, bi-directional, precision current sense amp w/pwm rejection & int. shunt resistor

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Data sheet

INA253-Q1

ACTIVE
Data sheet Order now

Product details

Common-mode voltage (max) (V) 80 Common-mode voltage (min) (V) -4 Gain error (%) 0.4 Gain error drift (±) (max) (ppm/°C) 45 CMRR (min) (dB) 120 Bandwidth (kHz) 350 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.7 Iq (max) (mA) 2.6 Features Bidirectional, Enhanced PWM Rejection, Integrated Shunt, Low-side Capable Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
Common-mode voltage (max) (V) 80 Common-mode voltage (min) (V) -4 Gain error (%) 0.4 Gain error drift (±) (max) (ppm/°C) 45 CMRR (min) (dB) 120 Bandwidth (kHz) 350 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 2.7 Iq (max) (mA) 2.6 Features Bidirectional, Enhanced PWM Rejection, Integrated Shunt, Low-side Capable Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
TSSOP (PW) 20 41.6 mm² 6.5 x 6.4
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40 °C to +125 °C, TA
  • Functional Safety-Capable
  • Precision integrated shunt resistor
    • Shunt resistor: 2 mΩ
    • Shunt inductance: 3 nH
    • Shunt resistor tolerance: 0.1% (maximum)
    • ±15 A continuous from –40 °C to +85 °C
    • 0 °C to 125 °C temperature coefficient: 10 ppm/°C
  • High bandwidth: 350 kHz
  • Enhanced PWM rejection
  • Excellent CMRR
    • > 120-dB DC CMRR
    • 90-dB AC CMRR at 50 kHz
  • Accuracy:
    • Gain:
      • Gain error: 0.4% (maximum)
      • Gain drift: 45 ppm/°C (maximum)
    • Offset:
      • Offset current: ±15 mA (maximum)
      • Offset drift: 125 µA/°C (maximum)
  • Wide common-mode range: –4 V to +80 V
  • Available gains: 100 mV/A, 200 mV/A, and 400 mV/A
  • Quiescent current: 2.4 mA (maximum)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40 °C to +125 °C, TA
  • Functional Safety-Capable
  • Precision integrated shunt resistor
    • Shunt resistor: 2 mΩ
    • Shunt inductance: 3 nH
    • Shunt resistor tolerance: 0.1% (maximum)
    • ±15 A continuous from –40 °C to +85 °C
    • 0 °C to 125 °C temperature coefficient: 10 ppm/°C
  • High bandwidth: 350 kHz
  • Enhanced PWM rejection
  • Excellent CMRR
    • > 120-dB DC CMRR
    • 90-dB AC CMRR at 50 kHz
  • Accuracy:
    • Gain:
      • Gain error: 0.4% (maximum)
      • Gain drift: 45 ppm/°C (maximum)
    • Offset:
      • Offset current: ±15 mA (maximum)
      • Offset drift: 125 µA/°C (maximum)
  • Wide common-mode range: –4 V to +80 V
  • Available gains: 100 mV/A, 200 mV/A, and 400 mV/A
  • Quiescent current: 2.4 mA (maximum)

The INA253-Q1 is an automotive, voltage-output, current sense amplifier with an integrated shunt resistor of 2 mΩ. The INA253-Q1 monitors bidirectional currents over a wide common-mode range from –4 V to +80 V, independent of the supply voltage. Three fixed gains are available: 100 mV/A, 200 mV/A, and 400 mV/A. The integration of the precision resistor with a zero-drift chopped amplifier provides calibration-equivalent measurement accuracy, ultra-low temperature-drift performance of 15 ppm/ °C, and an optimized Kelvin layout for the sensing resistor.

The INA253-Q1 is designed with enhanced PWM rejection circuitry to suppress large (dv/dt) signals that enable real-time continuous current measurements. The measurements are critical for in-line current measurements in a motor-drive application, and for solenoid valve-control applications.

This device operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 3 mA of supply current. All gain versions are specified over the operating temperature range of –40 °C to +125 °C, and are available in a 20-pin TSSOP package.

The INA253-Q1 is an automotive, voltage-output, current sense amplifier with an integrated shunt resistor of 2 mΩ. The INA253-Q1 monitors bidirectional currents over a wide common-mode range from –4 V to +80 V, independent of the supply voltage. Three fixed gains are available: 100 mV/A, 200 mV/A, and 400 mV/A. The integration of the precision resistor with a zero-drift chopped amplifier provides calibration-equivalent measurement accuracy, ultra-low temperature-drift performance of 15 ppm/ °C, and an optimized Kelvin layout for the sensing resistor.

The INA253-Q1 is designed with enhanced PWM rejection circuitry to suppress large (dv/dt) signals that enable real-time continuous current measurements. The measurements are critical for in-line current measurements in a motor-drive application, and for solenoid valve-control applications.

This device operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 3 mA of supply current. All gain versions are specified over the operating temperature range of –40 °C to +125 °C, and are available in a 20-pin TSSOP package.
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Technical documentation

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* Data sheet INA253-Q1 AEC-Q100, 80-V, Bidirectional, Precision Current Sense Amplifier With PWM Rejection and Integrated Shunt Resistor datasheet (Rev. A) PDF | HTML 08 Jan 2020
Application note Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers PDF | HTML 18 Nov 2024
Application brief Current Mode Control in Switching Power Supplies (Rev. E) PDF | HTML 12 Apr 2023
Application brief Current Sensing in an H-Bridge (Rev. D) PDF | HTML 07 Apr 2023
Application brief Integrating the Current Sensing Resistor (Rev. D) PDF | HTML 07 Apr 2023
Application brief Low-Drift, Precision, In-Line Motor Current Measurements With PWM Rejection (Rev. D) PDF | HTML 07 Apr 2023
Application brief Switching Power Supply Current Measurements (Rev. E) PDF | HTML 07 Apr 2023
Application brief High-Side Drive, High-Side Solenoid Monitor With PWM Rejection (Rev. D) PDF | HTML 15 Aug 2022
Functional safety information INA253-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 25 Jan 2021
Technical article Current-sensing dynamics in automotive solenoids PDF | HTML 01 Nov 2019
Application brief Benefits of Intergated Low Inductive Shunt for PWM Applications 17 Jun 2017

Design & development

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

Evaluation board

INA253EVM — INA253 Current Sensing Evaluation Module with Easy Test Access

The INA253EVM consists of one PCB with an option to cut out three individual PCBs.  Each of the PCB cutouts consists of the INA253Ax device (where Ax is A1, A2, and A3, for boards 1 through 3, respectively) and test points for external hardware connections.
User guide: PDF
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Simulation model

INA253 TINA-TI Reference Design

SLOM452.TSC (453 KB) - TINA-TI Reference Design
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Simulation model

INA253 TINA-TI Spice Model

SLOM451.ZIP (24 KB) - TINA-TI Spice Model
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Simulation model

INA253A1 PSpice Model

SLOM499.ZIP (23 KB) - PSpice Model
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Simulation model

INA253A2 PSpice Model

SLOM496.ZIP (23 KB) - PSpice Model
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Simulation model

INA253A3 PSpice Model

SLOM492.ZIP (23 KB) - PSpice Model
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Calculation tool

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

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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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Supported products & hardware
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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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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 (...)
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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
Reference designs

TIDA-020023 — Automotive proportional solenoid drive with highly accurate current sensor reference design

This reference design demonstrates precise proportional solenoid drive using a simple push-pull output comparator and highly-accurate, integrated current shunt monitor. Precise and accurate control of proportional solenoids is especially necessary in the automatic transmission of a vehicle for (...)
Design guide: PDF
Schematic: PDF
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TSSOP (PW) 20 Ultra Librarian
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