Product details


Common mode voltage (Max) (V) 26 Common mode voltage (Min) (V) -0.1 Input offset (+/-) (Max) (uV) 150 Input offset drift (+/-) (Typ) (uV/C) 0.1 Gain (V/V) 100, 200, 50 Gain error (%) 1.5, 1 Gain error drift (+/-) (Max) (ppm/°C) 10 CMRR (Min) (dB) 100 Bandwidth (kHz) 80, 30, 14 Supply voltage (Max) (V) 26 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 0.115 Number of channels (#) 1 Comparators (#) 0 Features Bi-directional, 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

SOT-SC70 (DCK) 6 4 mm² 2 x 2.1 UQFN (RSW) 10 3 mm² 1.8 x 1.4 open-in-new Find other Current sense amplifiers analog output


  • Wide Common-Mode Range: –0.3 V to 26 V
  • Offset Voltage: ±150 µV (Maximum)
    (Enables Shunt Drops of 10-mV Full-Scale)
  • Accuracy:
    • Gain Error (Maximum Over Temperature):
      • ±1% (C Version)
      • ±1.5% (A and B Versions)
    • 0.5-µV/°C Offset Drift (Maximum)
    • 10-ppm/°C Gain Drift (Maximum)
  • Choice of Gains:
    • INA199x1: 50 V/V
    • INA199x2: 100 V/V
    • INA199x3: 200 V/V
  • Quiescent Current: 100 µA (Maximum)
  • Packages: 6-Pin SC70, 10-Pin UQFN
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The INA199 series of voltage-output, current-shunt monitors (also called current-sense amplifiers) are commonly used for overcurrent protection, precision-current measurement for system optimization, or in closed-loop feedback circuits. This series of devices can sense drops across shunt resistors at common-mode voltages from –0.3 V to 26 V, independent of the supply voltage. Three fixed gains are available: 50 V/V, 100 V/V, and 200 V/V. The low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10-mV full-scale.

These devices operate from a single 2.7-V to 26-V power supply, drawing a maximum of 100 µA of supply current. All versions are specified from –40°C to 125°C, and offered in both SC70-6 and thin UQFN-10 packages.

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Technical documentation

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Type Title Date
* Data sheet INA199 26-V, Bidirectional, Zero-Drift, Low- or High-Side, Voltage-Output, Current-Shunt Monitor datasheet (Rev. G) Feb. 02, 2017
Technical article Solving the multidecade current-measurement challenge in your 48-V BMS application Jun. 14, 2021
Technical article How current-sense amplifiers monitor satellite health Feb. 08, 2021
Application note Precision Current Measurements on High-Voltage Power-Supply Rails (Rev. D) Dec. 29, 2020
Application note Current sensing in high‐power USB Type‐C applications Dec. 21, 2020
Application note Low-Drift, Low-Side, Bidirectional Current Sensing Circuit (Rev. A) Dec. 02, 2020
E-book Simplifying Current Sensing (Rev. A) Jan. 09, 2020
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
Selection guide Current Sense Amplifiers (Rev. D) Apr. 04, 2018
Application note Closed-Loop Analysis of Load-Induced Amplifier Stability Issues Using Zout Oct. 27, 2017
Technical article Precise constant current regulation helps advance fast-charging Jun. 15, 2017
Application note Low-Side Current Sense Circuit Integration Mar. 30, 2017
Application note Integrating The Current Sensing Signal Path (Rev. A) Dec. 02, 2016
User guide INA199B1-B3EVM User's Guide Hardware Version 2 Jul. 08, 2016
White paper Overcurrent protection enables more efficient and reliable systems May 16, 2016
User guide INA199A1-A3EVM User's Guide Hardware Version 1 May 13, 2010

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 INA199B1-B3 devices are voltage output, high-side measurement, bi-directional, zero-drift current

shunt monitors. The INA199EVM is intended to provide basic functional evaluation of this device family.  The fixture layout is not intended to be a model for the target circuit, nor is it laid (...)

  • Evaluation of all gain options through provided device
  • Ease of access to device pins with test points
  • Space for optional input filtering capacitors and resistors
  • Multiple input signal options

Design tools & simulation

SBOM925.ZIP (7 KB) - TINA-TI Spice Model
SBOM926.TSC (252 KB) - TINA-TI Reference Design
SBOM927.ZIP (7 KB) - TINA-TI Spice Model
SBOM928.TSC (253 KB) - TINA-TI Reference Design
SBOM929.ZIP (7 KB) - TINA-TI Spice Model
SBOM930.TSC (253 KB) - TINA-TI Reference Design
SBOMBC1.ZIP (24 KB) - PSpice Model
SBOMBC8.ZIP (24 KB) - PSpice Model
SBOMBD0.ZIP (24 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

Three Phase AC Current Measurements Using Current Transformer Reference Design
TIDA-00753 The TIDA-00753 reference design demonstrates high accuracy wide range AC current measurement for a three phase motor using the INA199 zero drift current shunt monitor. The design also has low power consumption of 25mW for Gain stage of 200 as compared to a discrete solution. The design footprint and (...)
document-generic Schematic document-generic User guide
97% efficiency, 125W, Wide input Synchronous 4-Switch Buck-Boost Battery Charger Reference Design
PMP10594 — PMP10594 is a synchronous 4-switch buck-boost converter reference design which utilizes the LM5175 controller for battery charger applications. The output voltage set point can be adjusted by a PWM signal over the range of 7.1V to 9.2V. I2C programming allows independent control of the average (...)
document-generic Schematic document-generic User guide
Fast Charge Adapter Control Board Using MaxCharge™ Technology Reference Design
PMP40133 — The PMP40133 control board provides the interface with fast charger adapter solution. The main MCU is MSP430G2955 which controls communication with a charger device using MaxCharge™ techonlogy. TPL0102-100 digital potentiometer is used for fine tuning the adapter output voltage. 256 taps  (...)
document-generic Schematic document-generic User guide
60W Synchronous Boost LED Driver Reference Design for Automotive Application
TIDA-00748 TIDA-00748 is a 60W Synchronous Boost Design for automotive LED application utilizing the Synchronous Boost Converter LM5122-Q1.  This design applies to automotive lighting for exterior lighting such as headlights and taillights and also interior LED lighting systems. The design accepts an (...)
document-generic Schematic document-generic User guide
Low Power Micro Stepper Motor Driver Reference Design Using FRAM
TIDM-LPSM Controlled by the  MSP-EXP430FR5969 FRAM LaunchPad, this 20-pin boosterpack utilizes the DRV8836 motor driver for operating low-voltage stepper motors with minimal power consumption to better optimize battery life.  Micro stepping logic provides for smooth motor steps, a INA199 current (...)
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

Package Pins Download
SC70 (DCK) 6 View options
UQFN (RSW) 10 View options

Ordering & quality

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  • Ongoing reliability monitoring

Support & training

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