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Product details

Parameters

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

Features

  • 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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Description

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

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 16
Type Title Date
* Datasheet INA199 26-V, Bidirectional, Zero-Drift, Low- or High-Side, Voltage-Output, Current-Shunt Monitor datasheet (Rev. G) Feb. 02, 2017
White papers Simplifying Current Sensing (Rev. A) Jan. 09, 2020
Application notes External current sense amps vs integrated onboard amplifiers for current sensing (Rev. B) Feb. 19, 2019
Application notes Precision current measurements on high-voltage power-supply rails (Rev. C) Feb. 19, 2019
Technical articles A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Application notes Low-drift, low-side, bidirectional current sensing circuit with integrated preci Jun. 28, 2018
Selection guides Current Sense Amplifiers (Rev. D) Apr. 04, 2018
Application notes Closed-Loop Analysis of Load-Induced Amplifier Stability Issues Using Zout Oct. 27, 2017
Technical articles Precise constant current regulation helps advance fast-charging Jun. 15, 2017
Technical articles System trade-offs for high- and low-side current measurements Jun. 01, 2017
Application notes Low-Side Current Sense Circuit Integration Mar. 30, 2017
Application notes Integrating The Current Sensing Signal Path (Rev. A) Dec. 02, 2016
User guides INA199B1-B3EVM User's Guide Hardware Version 2 Jul. 08, 2016
Technical articles Why should you care about overcurrent protection in your system? Jun. 16, 2016
White papers Overcurrent protection enables more efficient and reliable systems May 16, 2016
User guides 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

EVALUATION BOARDS Download
document-generic User guide
25
Description

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 (...)

Features
  • 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

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

Reference designs

REFERENCE DESIGNS Download
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
REFERENCE DESIGNS Download
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
REFERENCE DESIGNS Download
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
REFERENCE DESIGNS Download
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
REFERENCE DESIGNS Download
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
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
SC70 (DCK) 6 View options
UQFN (RSW) 10 View options

Ordering & quality

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