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Product details

Parameters

Common mode voltage (Max) (V) 60 Common mode voltage (Min) (V) 2.7 Input offset (+/-) (Max) (uV) 1000 Input offset drift (+/-) (Typ) (uV/C) 1 Gain (V/V) Adjustable Gain error (%) 2 Gain error drift (+/-) (Max) (ppm/°C) 100 CMRR (Min) (dB) 100 Bandwidth (kHz) 440 Supply voltage (Max) (V) 60 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 0.125 Number of channels (#) 1 Comparators (#) 0 Features Current Output Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other Current sense amplifiers analog output

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other Current sense amplifiers analog output

Features

  • Complete Unipolar High-Side Current Measurement Circuit
  • Wide Supply and Common-Mode Range
  • INA139: 2.7 V to 40 V
  • INA169: 2.7 V to 60 V
  • Independent Supply and Input Common-Mode Voltages
  • Single Resistor Gain Set
  • Low Quiescent Current: 60 µA (Typical)
  • 5-Pin, SOT-23 Packages

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Description

The INA139 and INA169 are high-side, unipolar, current shunt monitors. Wide input common-mode voltage range, high-speed, low quiescent current, and tiny SOT-23 packaging enable use in a variety of applications.

Input common-mode and power-supply voltages are independent and can range from 2.7 V to 40 V for the INA139 and 2.7 V to 60 V for the INA169. Quiescent current is only 60 µA, which permits connecting the power supply to either side of the current measurement shunt with minimal error.

The device converts a differential input voltage to a current output. This current is converted back to a voltage with an external load resistor that sets any gain from 1 to over 100. Although designed for current shunt measurement, the circuit invites creative applications in measurement and level shifting.

Both the INA139 and INA169 are available in 5-pin SOT-23 packages. The INA139 device is specified for the –40°C to +125°C temperature range, and the INA169 is specified from –40°C to +85°C.

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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 10
Type Title Date
* Datasheet INA1x9 High-Side Measurement Current Shunt Monitor datasheet (Rev. F) Feb. 27, 2017
Technical articles A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Application notes High-voltage, high-side floating current sensing circuit using current output, c Jun. 28, 2018
Application notes Extending Common-Mode Range of Current-Sense Amplifiers Jul. 06, 2017
Technical articles System trade-offs for high- and low-side current measurements Jun. 01, 2017
Application notes Current Sensing in a Programmable Logic Controller (PLC) May 03, 2017
Application notes Precision LED Brightness and Color Mixing With Discrete Current Sense Amplifiers Feb. 28, 2017
Technical articles Why should you care about overcurrent protection in your system? Jun. 16, 2016
Technical articles How to get started with current sense amplifiers – part 2 May 26, 2015
Application notes Extending Voltage Range of Current Shunt Monitor Feb. 15, 2006

Design & development

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

Design tools & simulation

SIMULATION MODELS Download
SBOC008B.ZIP (38 KB) - PSpice Model
SIMULATION MODELS Download
SBOC162C.TSC (82 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBOM223B.ZIP (4 KB) - TINA-TI Spice 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
LED-Lighting Control Reference Design for Machine Vision
TIDA-01081 — This LED lighting control reference design demonstrates a unique approach to drive and control a string of multiple high-power light-emitting diodes (LEDs). This reference design is targeted for industrial machine vision systems and is also suitable for other industrial or automotive lighting (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Range boost converter reference design to drive two strings of automotive LEDs
PMP9010 This wide input voltage range boost operates from an input of 9V - 32V and regulates current in two strings of 13 LEDs. A second control loop monitors and regulates the input current during drop outs or faults. Discrete linear regulators at the bottom of each string control the individual string (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive Range Boost Converter Drives Two Strings of LEDs Reference Design
PMP8948 — This wide input voltage range boost operates from an input of 9V - 32V and regulates current in two strings of 13 LEDs. Additionally, a second control loop monitors and regulates the input current during drop outs or faults. This low cost design operates at greater than 94% efficiency.

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 5 View options

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