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Product details

Parameters

Common mode voltage (Max) (V) 80 Common mode voltage (Min) (V) -4 Input offset (+/-) (Max) (uV) 12.5mA Input offset drift (+/-) (Typ) (uV/C) 125uA/C Gain (V/V) 100mV/A, 200mV/A, 400mV/A 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 Number of channels (#) 1 Comparators (#) 0 Features Bi-directional, Enhanced PWM Rejection, Integrated Shunt, Low-side Capable Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other Current sense amplifiers analog output

Package | Pins | Size

TSSOP (PW) 20 42 mm² 6.5 x 6.4 open-in-new Find other Current sense amplifiers analog output

Features

  • Precision Integrated Shunt Resistor
    • Shunt Resistor: 2 mΩ
    • Shunt Inductance: 3 nH
    • Shunt Resistor Tolerance: 0.1% (Max)
    • ±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% (Max)
      • Gain Drift: 45 ppm/°C (Max)
    • Offset:
      • Offset Current: ±15 mA (Max)
      • Offset Drift: 125 µA/°C (Max)
  • 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 (Max)

All trademarks are the property of their respective owners.

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Description

The INA253 is a voltage-output, current sense amplifier with an integrated shunt resistor of 2 mΩ. The INA253 is designed to monitor 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 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 extended operating temperature range (–40°C to +125°C), and are available in a 20-pin TSSOP package.

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Technical documentation

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Type Title Date
* Datasheet INA253 High Voltage, Bidirectional, Zero-Drift, Current-Shunt Monitor With Integrated, 2-mΩ, Precision, Low Inductive Shunt Resistor datasheet (Rev. A) Dec. 12, 2018
More literature Simplifying Current Sensing (Rev. A) Jan. 09, 2020
Technical articles Current-sensing dynamics in automotive solenoids Nov. 01, 2019
Technical articles A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Application notes Current Measurements in Power Supplies (Rev. A) Jul. 20, 2018
Application notes Current Mode Control in Switching Power Supplies (Rev. A) Jul. 20, 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 Integrating a Current Sense Resistor With a Current Sense Amplifier (Rev. B) Jul. 20, 2018
Application notes Low-Drift, Precision, In-Line Motor Current Measurements With PWM Rejection (Rev. B) Jul. 20, 2018
User guides INA253EVM User's Guide May 08, 2018
Selection guides Current Sense Amplifiers (Rev. D) Apr. 04, 2018
Application notes Low Temperature Drift Integrated Shunt vs Active Temp Compensation of Shunt Dec. 27, 2017
Application notes Integrated-Resistor Current Sensors Simplify PCB Design Jun. 30, 2017
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
Technical articles Why should you care about overcurrent protection in your system? Jun. 16, 2016

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
$49.00
Description
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.
Features
  • All INA253 gain versions are included
  • Easy access to all pins
  • Place holders on the PCB for configurations other than default

Design tools & simulation

SIMULATION MODELS Download
SLOM451.ZIP (24 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLOM452.TSC (453 KB) - TINA-TI Reference Design
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

Reference designs

REFERENCE DESIGNS Download
8 Port IO-Link Master Reference Design
TIDA-010016 — PLC applications requiring fast timing and fast cycle time can now be realized using this reference design which implements, an eight-port IO-Link master. It can be used to build a remote IO gateway to connect to OPC UA, Profinet, EtherCAT or Ethernet IP. A PRU-based frame handler enables a very (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive proportional solenoid drive with highly accurate current sensor reference design
TIDA-020023 — 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 (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 20 View options

Ordering & quality

Support & training

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Videos

Over Current Sensing Techniques

Watch this webinar recording to learn more about the over-current protection (OCP). This webinar was brought to you in cooperation with Farnell element 14. 

Posted: 19-Jan-2016
Duration: 07:00

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