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Product details

Parameters

Common mode voltage (Max) (V) 80 Common mode voltage (Min) (V) -16 Input offset (+/-) (Max) (uV) 2500 Input offset drift (+/-) (Typ) (uV/C) 2.5 Gain (V/V) 20 Gain error (%) 1 Gain error drift (+/-) (Max) (ppm/°C) 50 CMRR (Min) (dB) 100 Bandwidth (kHz) 130 Supply voltage (Max) (V) 18 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 0.95 Comparators (#) 0 Features Low-side Capable Rating Automotive Operating temperature range (C) -40 to 125 open-in-new Find other Current sense amplifiers analog output

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 open-in-new Find other Current sense amplifiers analog output

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • Pinout Optimized for External Filtering
  • Wide Common-Mode Range: –16 V to +80 V
  • Accuracy:
    • CMRR: 120 dB
    • ±2.5-mV Offset (Maximum)
    • ±1% Gain Error (Maximum)
    • 20-µV/°C Offset Drift (Maximum)
    • 55-ppm/°C Gain Drift (Maximum)
  • Bandwidth: Up to 130 kHz
  • Two Gain Options Available:
    • 14 V/V (INA270A-Q1)
    • 20 V/V (INA271A-Q1)
  • Quiescent Current: 900 µA (Maximum)
  • Power Supply: 2.7 V to 18 V
  • Packages: SOIC-8

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Description

The INA270A-Q1 and INA271A-Q1 (INA27xA-Q1) family of current-shunt monitors with voltage output can sense voltage drops across current shunts at common-mode voltages from –16 V to +80 V, independent of the supply voltage. The INA27xA-Q1 pinouts readily enable filtering.

The INA27xA-Q1 devices are available with two output voltage scales: 14 V/V and 20 V/V. The 130-kHz bandwidth simplifies use in current-control loops.

The INA27xA-Q1 operates from a single 2.7-V to 18-V supply, drawing a maximum of 900 µA of supply current. They are specified over the extended operating temperature range of –40°C to +125°C and are offered in an SOIC-8 package.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet INA27xA-Q1 Automotive Grade, –16V to +80V, Low- or High-side, High-Speed, Voltage Output Current Sense Amplifier With Simplified Filter Inputs datasheet (Rev. C) Apr. 13, 2016
Technical articles How current-sense amplifiers monitor satellite health Feb. 08, 2021
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

Design & development

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

Design tools & simulation

SIMULATION MODEL Download
SBOC285B.TSC (176 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SBOC286A.ZIP (37 KB) - Spice Model
SIMULATION MODEL Download
SBOM313A.ZIP (6 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SBOMBC2.ZIP (57 KB) - PSpice Model
SIMULATION TOOL 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 TOOL 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
CALCULATION TOOL Download
SBOR020A.ZIP (525 KB)

Reference designs

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
SOIC (D) 8 View options

Ordering & quality

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Support & training

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