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 Catalog 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 Catalog Operating temperature range (C) -40 to 125
DSBGA (YFD) 6 1 mm² .8 x 1.21 SOT-23-THN (DDF) 8 8 mm² 2.9 x 2.8 SOT-SC70 (DCK) 6 4 mm² 2 x 2.1
  • Wide common-mode voltage range, VCM: –0.2 V to +40 V
  • Low input bias currents, IIB: 500 pA (typical) (enables microamp current measurement)
  • 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: 25 V/V
    • INA186A2: 50 V/V
    • INA186A3: 100 V/V
    • INA186A4: 200 V/V
    • INA186A5: 500 V/V
  • Wide common-mode voltage range, VCM: –0.2 V to +40 V
  • Low input bias currents, IIB: 500 pA (typical) (enables microamp current measurement)
  • 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: 25 V/V
    • INA186A2: 50 V/V
    • INA186A3: 100 V/V
    • INA186A4: 200 V/V
    • INA186A5: 500 V/V

The INA186 is a low-power, voltage-output, current-sense amplifier (also called a current-shunt monitor). This device is commonly used for overcurrent protection, precision current measurement for system optimization, or in closed-loop feedback circuits. The INA186 can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage.

The low input bias current of the INA186 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 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, SOT-23-THIN, and DSBGA packages. The SC70 and SOT-23 (DDF) packages support bidirectional current measurement, whereas the DSBGA package only supports current measurement in one direction.

The INA186 is a low-power, voltage-output, current-sense amplifier (also called a current-shunt monitor). This device is commonly used for overcurrent protection, precision current measurement for system optimization, or in closed-loop feedback circuits. The INA186 can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage.

The low input bias current of the INA186 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 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, SOT-23-THIN, and DSBGA packages. The SC70 and SOT-23 (DDF) packages support bidirectional current measurement, whereas the DSBGA package only supports current measurement in one direction.

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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 (...)
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Simulation model

INA186 TINA-TI Reference Design (Rev. A)

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

INA186 TINA-TI Spice Model (Rev. A)

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

INA186A2 PSpice Model

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

INA186A3 PSpice Model

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

INA186A4 PSpice Model

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

INA186A5 PSpice Model

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

INA186A1 PSpice Model

SBOMBE8.ZIP (29 KB) - PSpice Model
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 (...)
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 (...)
Design tool

CIRCUIT060035 — Bidirectional current sensing with a window comparator circuit

This bidirectional current sensing solution uses a current-sense amplifier and a high-speed dual comparator with a rail-to-rail input common mode range to create over-current (OC) alert signals at the comparator outputs (OUTA and OUTB) if the input current (IG1) rises above 100 A or falls below (...)
Design tool

CIRCUIT060037 — Precision over-current latch circuit

This high-side, current sensing solution uses a current sense amplifier, a comparator with an integrated reference and a P-channel MOSFET to create an over-current latch circuit. When a load current greater than 200 mA is detected, the circuit disconnects the system from its power source. The (...)
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 (...)

Package Pins Download
DSBGA (YFD) 6 View options
SC70 (DCK) 6 View options
SOT-23-THIN (DDF) 8 View options

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