Top

Product details

Parameters

Common mode voltage (Max) (V) 36 Common mode voltage (Min) (V) 0 Input offset (+/-) (Max) (uV) 30, 50, 80 Input offset drift (+/-) (Typ) (uV/C) 0.1 Gain (V/V) 100, 20, 50 Gain error (%) 0.1, 0.15, 0.2 Gain error drift (+/-) (Max) (ppm/°C) 10 CMRR (Min) (dB) 100 Bandwidth (kHz) 550, 500, 450 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 1.1 Number of channels (#) 1 Comparators (#) 2 Features Alert Function, Bi-directional, High precision, Low-side Capable 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

TSSOP (PW) 14 32 mm² 5 x 6.4 open-in-new Find other Current sense amplifiers analog output

Features

  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C ≤ TA ≤ +125°C
    • HBM ESD classification level 2
    • CDM ESD classification level C6
  • Wide common-mode input range: –0.1 V to +36 V
  • Dual comparator outputs:
    • INA302-Q1: Two independent overlimit alerts
    • INA303-Q1: Window comparator
    • Threshold levels set individually
    • Comparator 1 alert response: 1 µs
    • Comparator 2 adjustable delay: 2 µs to 10 s
    • Open-drain outputs with independent latch control modes
  • High accuracy amplifier:
    • Offset voltage: 30 µV (max, A3 version)
    • Offset voltage drift: 0.5 µV/°C (max)
    • Gain error: 0.15% (max, A3 version)
    • Gain error drift: 10 ppm/°C
  • Available amplifier gains:
    • INA302A1-Q1, INA303A1-Q1: 20 V/V
    • INA302A2-Q1, INA303A2-Q1: 50 V/V
    • INA302A3-Q1, INA303A3-Q1: 100 V/V

All trademarks are the property of their respective owners.

open-in-new Find other Current sense amplifiers analog output

Description

The INA302-Q1 and INA303-Q1 (INA30x-Q1) devices feature a high common-mode, bidirectional, current-sensing amplifier and two high-speed comparators to detect out-of-range current conditions. The INA302-Q1 comparators are configured to detect and respond to overcurrent conditions. The INA303-Q1 comparators are configured to respond to both overcurrent and undercurrent conditions in a windowed configuration. These devices feature an adjustable limit threshold range for each comparator set using an external limit-setting resistor. These current-shunt monitors can measure differential voltage signals on common-mode voltages that can vary from –0.1 V up to +36 V, independent of the supply. In addition, these devices will survive with common-mode voltages as high as 40 V.

The open-drain alert outputs can be configured to operate in either a transparent mode (output status follows the input state), or in a latched mode (alert output is cleared when the latch is reset). The alert response time for comparator 1 is under 1 µs, and the alert response for comparator 2 is set through an external capacitor ranging from 2 µs to 10 s.

These devices operate from a single 2.7-V to 5.5-V supply, drawing a maximum supply current of 950 µA. The devices are specified over the extended operating temperature range of –40°C to +125°C, and are available in a 14-pin TSSOP package.

open-in-new Find other Current sense amplifiers analog output
Download
Similar products you might be interested in
open-in-new Compare products
Similar but not functionally equivalent to the compared device:
INA300-Q1 ACTIVE AEC-Q100, 36V current sense comparator The INA301-Q1 has a single ALERT with similar performance
INA301-Q1 ACTIVE AEC-Q100, 36V, 550kHz, 4V/µs, high-precision current sense amplifier w/ comparator The INA302-Q1 has dual over-current comparators

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 16
Type Title Date
* Data sheet INA30x-Q1 Automotive, 36-V, Overcurrent Protection, Precision, Current-Sense Amplifiers With Dual Integrated Comparators datasheet Feb. 26, 2019
Functional safety information INA30x-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA Apr. 15, 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 Bidirectional, Low-Side Phase Current Sensing With Onboard Overcurrent Detection (Rev. D) Mar. 06, 2019
Application note External current sense amps vs integrated onboard amplifiers for current sensing (Rev. B) Feb. 19, 2019
Technical article A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Application note Overcurrent event detection circuit Jul. 31, 2018
Application note Integrating a Current Sense Resistor With a Current Sense Amplifier (Rev. B) Jul. 20, 2018
Application note Measuring Current to Handle Multiple Out-of-Range Conditions (Rev. B) May 18, 2018
Application note Overcurrent and Out-of-Range Protections (Rev. C) May 18, 2018
Application note Low-Drift, Low-Side Current Measurements for Three-Phase Systems (Rev. B) Sep. 05, 2017
Technical article System trade-offs for high- and low-side current measurements Jun. 01, 2017
Application note Integrating The Current Sensing Signal Path (Rev. A) Dec. 02, 2016
Technical article Why should you care about overcurrent protection in your system? Jun. 16, 2016
White paper Overcurrent protection enables more efficient and reliable systems May 16, 2016

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description
The INA303EVM is a compact, easy-to-use platform for evaluating the main features and performance of the INA303 High-Speed Precision Current-Sense Amplifier with Dual Integrated Comparators, across its specified input voltage, common-mode voltage and temperature ranges. The EVM features all 3 gain (...)
Features
  • Small form factor
  • Features all 3 gain variants of the INA303 (20V/V, 50V/V and 100V/V)
  • LED indicators to conveniently monitor comparator output signals
EVALUATION BOARD Download
document-generic User guide
49
Description

The TMAG5124EVM is the evaluation module (EVM) for the TMAG5124, a 2-wire Hall effect sensor that utilizes a closed current loop as the signal of interest. The EVM is intended to facilitate rapid, convenient use of the device family and consists of a single printed-circuit board (PCB) that can be (...)

Features
  • Evaluation of the TMAG5124 across all sensitivities
  • Visual feedback board included for out of the box prototyping
  • Separable coupon boards for quick prototyping

Design tools & simulation

SIMULATION MODEL Download
SBOMAB9A.TSC (306 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SBOMAC0.ZIP (29 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SBOMB40.ZIP (63 KB) - PSpice Model
SIMULATION MODEL Download
SBOMBG0.ZIP (33 KB) - PSpice Model
SIMULATION MODEL Download
SBOMBH6.ZIP (33 KB) - PSpice Model
SIMULATION TOOL 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 TOOL 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
CALCULATION TOOL Download
SBOR020A.ZIP (525 KB)

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

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 14 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos