Product details


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, 440, 400 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


  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C ≤ TA ≤ +125°C
    • HBM ESD classification level 2
    • CDM ESD classification level C6
  • Functional Safety-Capable
  • 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
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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.

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Similar functionality to the compared device.
INA301-Q1 ACTIVE AEC-Q100, 36V, 550kHz, 4V/µs, high-precision current sense amplifier w/ comparator The INA301-Q1 has a single ALERT with similar performance
INA303-Q1 ACTIVE AEC-Q100, 36V, bi-directional, 550kHz, 4V/µs, high-precision current sense amp w/ window comparator The INA303-Q1 has window comparotor functionality

Technical documentation

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Type Title Date
* Data sheet INA30x-Q1 AEC-Q100, 36-V, Bidirectional, 550-kHz, 4V/µs, High-Precision Current Sense Amplifier With Dual Window Comparator datasheet (Rev. A) May 25, 2021
Technical article Solving the multidecade current-measurement challenge in your 48-V BMS application Jun. 14, 2021
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
Technical article How to design an automotive transient and overcurrent protection filter Oct. 14, 2020
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
Application note Integrating The Current Sensing Signal Path (Rev. A) Dec. 02, 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

document-generic User guide
The INA302EVM evaluation module (EVM) is a compact, easy-to-use platform for evaluating the main features and performance of the INA302 High-Speed Precision Current-Sense Amplifier with Dual Integrated Comparators, across its specified input voltage, common-mode voltage and temperature ranges. The (...)
  • Small form factor
  • Features all 3 gain variants of the INA302 (20V/V, 50V/V and 100V/V)
  • LED indicators to conveniently monitor comparator output signals

Design tools & simulation

SBOMAC1.ZIP (30 KB) - TINA-TI Spice Model
SBOMAC2.TSC (324 KB) - TINA-TI Reference Design
SBOMB41.ZIP (64 KB) - PSpice Model
SBOMBH3.ZIP (35 KB) - PSpice Model
SBOMBH4.ZIP (35 KB) - PSpice Model
SBOMBH5.ZIP (35 KB) - PSpice Model
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 (...)
  • 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
  • (...)
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
SBOR020C.ZIP (568 KB)

Reference designs

Automotive transient and overcurrent protection filter reference design
TIDA-020040 — This reference design showcases a protection system for voltage and current transient events typically found in automotive systems. This reference design optimizes functionality, size and protection capabilities while not sacrificing power delivery for premium audio amplifiers.
document-generic Schematic document-generic User guide
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

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TSSOP (PW) 14 View options

Ordering & quality

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Support & training

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