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INA138 Status: ACTIVE

High-Side Measurement Current Shunt Monitor, Current Output

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See Also

  • INA168 - Wider common-mode input range.
  • INA139 - Wider bandwidth.
  • INA169 - Wider bandwidth and wider common-mode input range.

Datasheet

Download - PDF Icon
  • High-Side Measurement Current Shunt Monitor (Rev. C) (ina138.pdf, 415 KB)
    11 Nov 2005 Download

 INA138INA168 
Gain(V/V)1 to 100  1 to 100  
Common Mode Input Range(Min)(V)2.7 to 36  2.7 to 60  
Input Offset (+/-)(Max)(uV)1000  1000  
Input Offset Drift (+/-)(Max)(uV/Degrees Celsius)1  1  
CMRR(Min)(dB)100  100  
Small-Signal Bandwidth(Typ)(MHz)0.8  0.08  
Quiescent Current (+/-)(Typ)(mA)0.025  0.025  
Vs(Min)(V)2.7  2.7  
Vs(Max)(V)36  60  
Operating Temp Range(Celsius)-40 to 125  -40 to 125  
Pin/Package5SOT-23  5SOT-23  
 SamplesSamples
 InventoryInventory

Other qualified versions of INA138

Version Part Number Definition
Automotive INA138-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

Customers Who Evaluated This Product Also Evaluated

  • INA193: Voltage Output High-Side Measurement Current Shunt Monitor
  • INA168: High-Side Measurement Current Shunt Monitor, Current Output
  • INA219: Zero-Drift, Bi-directional Current/Power Monitor in SOT23

More Related Products

Product Information

Features

  • COMPLETE UNIPOLAR HIGH-SIDE CURRENT MEASUREMENT CIRCUIT
  • WIDE SUPPLY AND COMMON-MODE RANGE
  • INA138: 2.7V to 36V
  • INA168: 2.7V to 60V
  • INDEPENDENT SUPPLY AND INPUT COMMONMODE VOLTAGES
  • SINGLE RESISTOR GAIN SET
  • LOW QUIESCENT CURRENT (25µA typ)
  • WIDE TEMPERATURE RANGE: –40°C to +125°C
  • SOT23-5 PACKAGE
  • APPLICATIONS
    • CURRENT SHUNT MEASUREMENT:
        Automotive, Telephone, Computers
    • PORTABLE AND BATTERY-BACKUP SYSTEMS
    • BATTERY CHARGERS
    • POWER MANAGEMENT
    • CELL PHONES
    • PRECISION CURRENT SOURCE

All trademarks are the property of their respective owners.

Description

The INA138 and INA168 are high-side, unipolar, current shunt monitors. Wide input common-mode voltage range, low quiescent current, and tiny SOT23 packaging enable use in a variety of applications.

Input common-mode and power-supply voltages are independent and can range from 2.7V to 36V for the INA138 and 2.7V to 60V for the INA168. Quiescent current is only 25µA, 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 INA138 and INA168 are available in SOT23-5 and are specified for the –40°C to +125°C temperature range.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
INA138NA/250ACTIVE-40 to 1251.10 | 1kuSOT-23 (DBV) | 5 View 250 | SMALL T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
INA138NA/250G4ACTIVE-40 to 1251.10 | 1kuSOT-23 (DBV) | 5 View 250 | SMALL T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
INA138NA/3KACTIVE-40 to 1250.99 | 1kuSOT-23 (DBV) | 5 View 3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
INA138NA/3KG4ACTIVE-40 to 1250.99 | 1kuSOT-23 (DBV) | 5 View 3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

  TI Inventory Status Reported Distributor Inventory
INA138NA/250As of 10:04 AM GMT, 09 Jan 2009As of 10:04 AM GMT, 09 Jan 2009
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* 250 | 18 Feb 8 Weeks AmericasArrow >1k
 >10k | 23 Feb DigiKey >1k
  Mouser Electronics >1k
  Newark >1k
  Rochester Electronics >1k
  EuropeArrow Northern Europe 750
  Avnet-SILICA >1k
INA138NA/250G4As of 10:04 AM GMT, 09 Jan 2009As of 10:04 AM GMT, 09 Jan 2009
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* 250 | 18 Feb 8 Weeks AmericasMouser Electronics 223
 >10k | 23 Feb EuropeEBV Elektronik >1k
  Farnell >1k
INA138NA/3KAs of 10:04 AM GMT, 09 Jan 2009As of 10:04 AM GMT, 09 Jan 2009
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 20 Feb 8 Weeks AmericasArrow >1k
  EuropeArrow Southern Europe >1k
INA138NA/3KG4As of 10:04 AM GMT, 09 Jan 2009As of 10:04 AM GMT, 09 Jan 2009
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 20 Feb 8 Weeks AmericasAvnet >1k
View all Distributors  

* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
INA138NA/250 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
INA138NA/250G4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
INA138NA/3K RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
INA138NA/3KG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Datasheets

  • High-Side Measurement Current Shunt Monitor (Rev. C) (ina138.pdf, 415 KB)
    11 Nov 2005 Download

Application Notes

  • A dual-polarity, bidirectional current-shunt monitor (slyt311.pdf, 704 KB)
    22 Oct 2008 Download
  • Q4 2008 Issue Analog Applications Journal  (slyt305.pdf, 1488 KB)
    22 Oct 2008 Download
  • Shelf-Life Evaluation of Lead-Free Component Finishes (szza046.htm, 8 KB)
    24 May 2004 Abstract
  • Thermal and Electrical Properties of Selected Packaging Materials (sbfa010.htm, 8 KB)
    04 Oct 2000 Abstract

User Guides

  • UCC38C42 30-W Synchronous Buck Converter Reference Design (sluu143.htm, 8 KB)
    04 Feb 2003 Abstract

Simulation Models

  • Spice Model
    • INA138 TINA Macro Model and Test Circuit (sboc152.zip, 14 KB)
      28 Aug 2006 zip
  • PSpice Model
    • INA138 PSpice Model  (sbom140.zip, 3 KB)
      05 Apr 2002  zip

More Literature

View More Literature for Current Shunt Monitors

Tools & Software

NamePart # Company Tool / Software Type
SPICE-Based Analog Simulation ProgramTINA-TITexas InstrumentsSimulators
MDACBufferPro Output Buffer Amplifier Selection ToolMDACBUFFERPRO Texas Instruments Application Software 

 Alternative Products - Are similar to INA138
Part #NameComments
INA168 High-Side Measurement Current Shunt Monitor, Current Output Wider common-mode input range. 
INA139 High-Side Measurement Current Shunt Monitor, Current Output Wider bandwidth. 
INA169 High-Side Measurement Current Shunt Monitor, Current Output Wider bandwidth and wider common-mode input range. 
Customers Who Evaluated This Product Also Evaluated...
INA193Voltage Output High-Side Measurement Current Shunt MonitorTI customers also evaluated this product.
INA168High-Side Measurement Current Shunt Monitor, Current OutputTI customers also evaluated this product.
INA219Zero-Drift, Bi-directional Current/Power Monitor in SOT23TI customers also evaluated this product.
INA210Voltage Output, High/Low-Side Measurement, Bi-Directional Zero-Drift Series Current Shunt MonitorTI customers also evaluated this product.
INA170High-Side Measurement Current Shunt Monitor, Current OutputTI customers also evaluated this product.
INA209High-Side Measurement, Bi-Directional Current/Power Monitor with I2C InterfaceTI customers also evaluated this product.
INA139High-Side Measurement Current Shunt Monitor, Current OutputTI customers also evaluated this product.
INA169High-Side Measurement Current Shunt Monitor, Current OutputTI customers also evaluated this product.
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