INA170

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2.7 to 60V, bi-directional, 400kHz Variable gain current sense amplifier

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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) 400 Supply voltage (Max) (V) 60 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 0.125 Number of channels (#) 1 Comparators (#) 0 Features Bi-directional, Current Output Rating Catalog Operating temperature range (C) -40 to 85 open-in-new Find other Current sense amplifiers analog output

Package | Pins | Size

VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Current sense amplifiers analog output

Features

  • COMPLETE BIDIRECTIONAL CURRENT MEASUREMENT CIRCUIT
  • WIDE SUPPLY RANGE: 2.7V to 40V
  • SUPPLY-INDEPENDENT COMMON-MODE VOLTAGE: 2.7V TO 60V
  • RESISTOR PROGRAMMABLE GAIN SET
  • LOW QUIESCENT CURRENT: 75µA (typ)
  • MSOP-8 PACKAGE
  • APPLICATIONS
    • CURRENT SHUNT MEASUREMENT:
        Automotive, Telephone, Computers, Power Systems, Test, General Instrumentation
    • PORTABLE AND BATTERY-BACKUP SYSTEMS
    • BATTERY CHARGERS
    • POWER MANAGEMENT
    • CELL PHONES

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Description

The INA170 is a high-side, bidirectional current shunt monitor featuring a wide input common-mode voltage range, low quiescent current, and a tiny MSOP-8 package.

Bidirectional current measurement is accomplished by output offsetting. The offset voltage level is set with an external resistor and voltage reference. This permits measurement of a bidirectional shunt current while using a single supply for the INA170.

Input common-mode and power-supply voltages are independent. Input voltage can range from +2.7V to +60V on any supply voltage from +2.7V to +40V. Low 10µA input bias current adds minimal error to the shunt current.

The INA170 converts a differential input voltage to a current output. This current develops a voltage across an external load resistor, setting any gain from 1 to over 100.

The INA170 is available in an MSOP-8 package, and is specified over the extended industrial temperature range, –40°C to +85°C with operation from –55°C to +125°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 7
Type Title Date
* Datasheet High-Side, Bidirectional Current Shunt Monitor datasheet (Rev. D) Jan. 31, 2006
Technical articles A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Technical articles System trade-offs for high- and low-side current measurements Jun. 01, 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 A dual-polarity, bidirectional current-shunt monitor Oct. 22, 2008
Application notes Q4 2008 Issue Analog Applications Journal Oct. 22, 2008

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
SBOC016B.ZIP (39 KB) - PSpice Model
SIMULATION MODELS Download
SBOC163C.TSC (81 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBOM224B.ZIP (5 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
Shunt based Ground Fault Protection for Inverters Powered from 220Vac Supply Reference Design
TIDA-00442 The TIDA-00442 TI design provides a reference solution for detecting  ground fault in inverter based drives. Inverter current is measured on both DC positive and DC negative bus using shunt resistors. Current on DC positive bus is measured using INA170 which is powered by low side switched buck (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VSSOP (DGK) 8 View options

Ordering & quality

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