Home Amplifiers Current sense amplifiers Current sense amplifiers analog output
Home
Amplifiers
Current sense amplifiers
Current sense amplifiers analog output

INA186-Q1

ACTIVE

AEC-Q100, 40-V, bidirectional, high-precision current sense amplifier w/ picoamp input bias & ENABLE

Order now
Data sheet
AEC-Q100, 40-V, bidirectional, high-precision current sense amplifier w/ picoamp input bias & ENABLE

INA186-Q1

ACTIVE
Data sheet Order now

Product details

Common mode voltage (Max) (V) 40 Common mode voltage (Min) (V) -0.2 Input offset (+/-) (Max) (uV) 50 Input offset drift (+/-) (Typ) (uV/C) 0.05 Gain (V/V) 100, 200, 25, 50, 500 Gain error (%) 0.9 Gain error drift (+/-) (Max) (ppm/°C) 10 CMRR (Min) (dB) 120 Bandwidth (kHz) 45, 37, 35, 32, 27 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 1.7 Iq (Max) (mA) 0.09 Number of channels (#) 1 Comparators (#) 0 Features Bi-directional, High precision, Low-side Capable Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (C) -40 to 125
Common mode voltage (Max) (V) 40 Common mode voltage (Min) (V) -0.2 Input offset (+/-) (Max) (uV) 50 Input offset drift (+/-) (Typ) (uV/C) 0.05 Gain (V/V) 100, 200, 25, 50, 500 Gain error (%) 0.9 Gain error drift (+/-) (Max) (ppm/°C) 10 CMRR (Min) (dB) 120 Bandwidth (kHz) 45, 37, 35, 32, 27 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 1.7 Iq (Max) (mA) 0.09 Number of channels (#) 1 Comparators (#) 0 Features 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
SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 SOT-SC70 (DCK) 6 4 mm² 2 x 2.1
open-in-new Find other Current sense amplifiers analog output
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Wide common-mode voltage range, VCM:
    –0.2 V to +40 V with survivability up to 42 V (recommended for automotive 12-V battery applications)
  • Low input bias currents, IIB: 500 pA (typical)
  • Low power:
    • Low supply voltage, VS: 1.7 V to 5.5 V
    • Low quiescent current, IQ: 48 µA (typical)
  • Accuracy:
    • Common-mode rejection ratio: 120 dB (minimum)
    • Gain error, EG: ±1% (maximum)
    • Gain drift: 10 ppm/°C (maximum)
    • Offset voltage, VOS: ±50 µV (maximum)
    • Offset drift: 0.5 µV/°C (maximum)
  • Bidirectional current sensing capability
  • Gain options:
    • INA186A1-Q1: 25 V/V
    • INA186A2-Q1: 50 V/V
    • INA186A3-Q1: 100 V/V
    • INA186A4-Q1: 200 V/V
    • INA186A5-Q1: 500 V/V
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Wide common-mode voltage range, VCM:
    –0.2 V to +40 V with survivability up to 42 V (recommended for automotive 12-V battery applications)
  • Low input bias currents, IIB: 500 pA (typical)
  • Low power:
    • Low supply voltage, VS: 1.7 V to 5.5 V
    • Low quiescent current, IQ: 48 µA (typical)
  • Accuracy:
    • Common-mode rejection ratio: 120 dB (minimum)
    • Gain error, EG: ±1% (maximum)
    • Gain drift: 10 ppm/°C (maximum)
    • Offset voltage, VOS: ±50 µV (maximum)
    • Offset drift: 0.5 µV/°C (maximum)
  • Bidirectional current sensing capability
  • Gain options:
    • INA186A1-Q1: 25 V/V
    • INA186A2-Q1: 50 V/V
    • INA186A3-Q1: 100 V/V
    • INA186A4-Q1: 200 V/V
    • INA186A5-Q1: 500 V/V
open-in-new Find other Current sense amplifiers analog output

The INA186-Q1 is an automotive, low-power, voltage-output, current-sense amplifier (also called a current-shunt monitor). This device is commonly used for monitoring systems directly connected to an automotive 12-V battery. The INA186-Q1 can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage. In addition, the input pins have an absolute maximum voltage of 42V.

The low input bias current of the INA186-Q1 permits the use of larger current-sense resistors, thus providing accurate current measurements in the microamp range. The low offset voltage of the zero-drift architecture extends the dynamic range of the current measurement. This feature allows for smaller sense resistors with lower power loss, while still providing accurate current measurements.

The INA186-Q1 operates from a single 1.7-V to 5.5-V power supply, and draws a maximum of 90 µA of supply current. Five fixed gain options are available: 25 V/V, 50 V/V, 100 V/V, 200 V/V, or 500 V/V. The device is specified over the operating temperature range of –40°C to +125°C, and offered in SC70, and SOT-23 packages. The SC70 package supports bidirectional current measurement, whereas the SOT-23 (DBV) only supports current measurement in one direction.

The INA186-Q1 is an automotive, low-power, voltage-output, current-sense amplifier (also called a current-shunt monitor). This device is commonly used for monitoring systems directly connected to an automotive 12-V battery. The INA186-Q1 can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage. In addition, the input pins have an absolute maximum voltage of 42V.

The low input bias current of the INA186-Q1 permits the use of larger current-sense resistors, thus providing accurate current measurements in the microamp range. The low offset voltage of the zero-drift architecture extends the dynamic range of the current measurement. This feature allows for smaller sense resistors with lower power loss, while still providing accurate current measurements.

The INA186-Q1 operates from a single 1.7-V to 5.5-V power supply, and draws a maximum of 90 µA of supply current. Five fixed gain options are available: 25 V/V, 50 V/V, 100 V/V, 200 V/V, or 500 V/V. The device is specified over the operating temperature range of –40°C to +125°C, and offered in SC70, and SOT-23 packages. The SC70 package supports bidirectional current measurement, whereas the SOT-23 (DBV) only supports current measurement in one direction.

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

Similar products you might be interested in

open-in-new Compare products
Pin-for-pin with same functionality to the compared device.
INA190-Q1 ACTIVE AEC-Q100, 40V, bi-directional, ultra-precise current sense amplifier w/picoamp IB & ENABLE The INA190-Q1 is functionally identical with increased accuracy

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 12
Type Title Date
* Data sheet INA186-Q1 Automotive, 40-V Current Sense Amplifier for Cost-Sensitive Systems datasheet (Rev. A) 01 May 2020
Technical article Solving the multidecade current-measurement challenge in your 48-V BMS application 14 Jun 2021
Technical article How current-sense amplifiers monitor satellite health 08 Feb 2021
Application note Precision Current Measurements on High-Voltage Power-Supply Rails (Rev. D) 29 Dec 2020
Application note Low-Drift, Low-Side, Bidirectional Current Sensing Circuit (Rev. A) 02 Dec 2020
Functional safety information INA186-Q1 Functional Safety FIT Rate, Failure Mode Distribution and Pin FMA 23 Mar 2020
Technical article Dark-current measurement in automotive telematics applications 04 Mar 2020
Application note Evaluating Current Sensing Amplifiers in Body Control Modules Using Simulation 16 Dec 2019
Application note 12-V Battery Monitoring in an Automotive Module 06 Mar 2019
Application note External current sense amps vs integrated onboard amplifiers for current sensing (Rev. B) 19 Feb 2019
Application note Low (microamp), high-side, current-sensing circuit with current-sensing amp 08 Jan 2019
Technical article A key to accurate system thermal management: monitoring both current flow and temperature 04 Oct 2018

Design & development

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

Evaluation board

INA186EVM — INA186 evaluation module

This is a small module with 5 completely independent boards that can be broken off by the user. Five identical boards (15A rating) can be used for the five device gain variants. Each board provides test points for VS, GND, OUT, and REF. Additionally, boards are compatible with 1206 to 0603 shunt (...)
document-pdfAcrobat User guide
In stock
Limit: 5
Simulation model

INA186 TINA-TI Reference Design (Rev. A)

SBOMAX9A.TSC (192 KB) - TINA-TI Reference Design
Download
Simulation model

INA186 TINA-TI Spice Model (Rev. A)

SBOMAY0A.ZIP (58 KB) - TINA-TI Spice Model
Download
Simulation model

INA186A2 PSpice Model

SBOMBA6.ZIP (30 KB) - PSpice Model
Download
Simulation model

INA186A3 PSpice Model

SBOMBA7.ZIP (30 KB) - PSpice Model
Download
Simulation model

INA186A4 PSpice Model

SBOMBA9.ZIP (30 KB) - PSpice Model
Download
Simulation model

INA186A5 PSpice Model

SBOMBD1.ZIP (30 KB) - PSpice Model
Download
Simulation model

INA186A1 PSpice Model

SBOMBE8.ZIP (29 KB) - PSpice Model
Download
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 (...)
Request
Simulation tool

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 (...)
document-pdfAcrobat User guide
View options
Calculation tool

Current Sense Amplifier Comparison and Error Tool (Rev. D)

SBOR020D.ZIP (582 KB)
Download
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 (...)

document-pdfAcrobat Schematic
Package Pins Download
SC70 (DCK) 6 View options
SOT-23 (DBV) 5 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

View all forum topics

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