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Product details

Parameters

Common mode voltage (Max) (V) 36 Common mode voltage (Min) (V) 0 Input offset (+/-) (Max) (uV) 650 Input offset drift (+/-) (Typ) (uV/C) 0.1 CMRR (Min) (dB) 96 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 0.135 Number of channels (#) 1 Comparators (#) 1 Features Alert Function, 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

VSSOP (DGS) 10 9 mm² 3 x 3 WSON (DSQ) 10 4 mm² 2 x 2 open-in-new Find other Current sense amplifiers analog output

Features

  • Wide Common-Mode Range: 0 V to 36 V
  • Selectable Response Times:
    • 10 µs, 50 µs, 100 µs
  • Programmable Threshold:
    • Adjust Using Single Resistor
    • Programmable From 0 mV to 250 mV
  • Accuracy:
    • Offset Voltage: ±500 µV (Max)
    • Offset Voltage Drift: 0.5 µV/°C (Max)
  • Selectable Hysteresis:
    • 2 mV, 4 mV, 8 mV
  • Active Quiescent Current: 135 µA (Max)
  • Selectable Disable Mode
    • Disabled Quiescent Current: 3.5 µA (Max)
    • Disabled Input Bias Current: 500 nA (Max)
  • Open-Drain Output with Latch Mode Available
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Description

Designed for overcurrent protection applications, the INA300 is a current-sensing comparator that detects overcurrent by measuring the voltage developed across a shunt resistor, and comparing that voltage to the threshold voltage input level. The device measures this differential voltage signal on common-mode voltages that can vary from 0 V up to 36 V, independent of the supply voltage. The device features an adjustable threshold range that is set using a single external limit-setting resistor. A selectable hysteresis feature enables adjustable operation of the comparator to accommodate the wide input signal range of 0 mV to 250 mV.

An open-drain alert output on the device can be configured to operate in either a transparent mode where the output status follows the input state, or in a latched mode where the alert output is cleared when the latch is cleared. The device response time setting is selectable, which enables overcurrent alerts to be issued in as fast as 10 µs.

This device operates from a single 2.7-V to 5.5-V supply, drawing a maximum supply current of 135 µA. The device is specified over the extended operating temperature range of –40°C to +125°C, and is available in WSON-10 and VSSOP-10 packages.

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Technical documentation

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No results found. Please clear your search and try again. View all 15
Type Title Date
* Datasheet INA300 Overcurrent-Protection, Current-Sense Comparator datasheet (Rev. B) Apr. 11, 2016
White papers Simplifying Current Sensing (Rev. A) Jan. 09, 2020
Application notes Bidirectional, Low-Side Phase Current Sensing With Onboard Overcurrent Detection (Rev. D) Mar. 06, 2019
Technical articles A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Application notes Overcurrent event detection circuit Jul. 31, 2018
Application notes Measuring Current to Handle Multiple Out-of-Range Conditions (Rev. B) May 18, 2018
Application notes Overcurrent and Out-of-Range Protections (Rev. C) May 18, 2018
Selection guides Current Sense Amplifiers (Rev. D) Apr. 04, 2018
Application notes Low-Drift, Low-Side Current Measurements for Three-Phase Systems (Rev. B) Sep. 05, 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
White papers Overcurrent protection enables more efficient and reliable systems May 16, 2016
Technical articles How to get started with current sense amplifiers – part 3 Jul. 09, 2015
More literature Over-Current Detection Products Brochure Aug. 14, 2014
User guides INA300EVM User's Guide Feb. 17, 2014

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
Description

The INA300 is a high common-mode, precision, bidirectional, current-sensing comparator that can be configured to detect over current conditions through the voltage developed across a shunt resistor.  Operating from a single power supply from 2.7 V to 5.5 V, the INA300 can be configured to (...)

Features
  • Jumper selectable Enable and disable
  • Jumper selectable Latch mode and transparent mode
  • Jumper selectable Delay (10 μs, 50 μs, and 100 μs)
  • Jumper selectable Hysteresis (2 mV, 5 mV, and 10 mV)
  • Threshold set by a single resistor or an external voltage source

Design tools & simulation

SIMULATION MODELS Download
SBOM879A.ZIP (9 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOM880A.TSC (1606 KB) - TINA-TI Reference Design
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

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 document-generic User guide
Design files
REFERENCE DESIGNS Download
50 mA-20 A, Single-Supply, Low-Side or High-Side Current Sensing Solution
TIDA-00328 This TI Reference Design implements a low-side or high-side wide dynamic range current sensing solution.  Wide dynamic range is achieved by a unique gain switching method.  Switching gain in hardware allows a faster response time than what can typically be achieved with other (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VSSOP (DGS) 10 View options
WSON (DSQ) 10 View options

Ordering & quality

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