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INA326 Status: ACTIVE

Precision, Low Drift, CMOS Instrumentation Amplifier

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Datasheet

Download - PDF Icon
  • INA326, 327: Precision, Rail-To-Rail I/O Instrumentation Amplifier (Rev. D) (ina326.pdf, 641 KB)
    03 Nov 2004 Download

 INA326
CMRR(Min)(dB)100  
Number of Channels1  
Pin/Package8MSOP  
Input Offset (+/-)(Max)(uV)100  
Input Offset Drift (+/-)(Max)(uV/Degrees Celsius)0.4  
Input Bias Current (+/-)(Max)(nA)2  
Noise at 1kHz(Typ)(nV/rt(Hz))33  
Quiescent Current (+/-)(Typ)(mA)2.4  
Settling Time to 0.01%(Typ)(us)160  
Gain(V/V)0.1 to 10000  
Input TypeCMOS  
Non-Linearity (+/-)(Max)(%)0.01  
Bandwidth at G=100(Min)(kHz)1  
Operating Temp Range(Celsius)-40 to 85  
Vs(Min)(V)2.7  
Vs(Max)(V)5.5  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • INA321: Micropower single-supply CMOS Instrumentation Amplifier
  • INA126: Micropower Instrumentation Amplifier Single and Dual Versions
  • INA128: Precision, Low Power Instrumentation Amplifiers
  • ADS1258: 24 Bit, Fast Channel Cycling Delta-Sigma ADC
  • OPA2333: 1.8V, 17uA, 2uV, microPOWER CMOS Zero-Drift Series Operational Amplifier
  • ADS8325: 16-Bit, 100kSPS Serial Out, 2.7V to 5.5V Micro Power Sampling ADC

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Product Information

Features

  • PRECISION
       LOW OFFSET: 100 µV (max)
       LOW OFFSET DRIFT: 0.4 µV/°C (max)
       EXCELLENT LONG-TERM STABILITY
       VERY-LOW 1/f NOISE
  • TRUE RAIL-TO-RAIL I/O
       INPUT COMMON-MODE RANGE:
          20mV Below Negative Rail to 100mV Above Positive Rail
       WIDE OUTPUT SWING: Within 10mV of Rails
       SUPPLY RANGE: Single +2.7V to +5.5V
  • SMALL SIZE
       microPACKAGE: MSOP-8, MSOP-10
  • LOW COST
  • APPLICATIONS
    • LOW-LEVEL TRANSDUCER AMPLIFIER FOR BRIDGES, LOAD CELLS, THERMOCOUPLES
    • WIDE DYNAMIC RANGE SENSOR MEASUREMENTS
    • HIGH-RESOLUTION TEST SYSTEMS
    • WEIGH SCALES
    • MULTI-CHANNEL DATA ACQUISITION SYSTEMS
    • MEDICAL INSTRUMENTATION
    • GENERAL-PURPOSE

Description

The INA326 and INA327 (with shutdown) are high-performance, low-cost, precision instrumentation amplifiers with rail-to-rail input and output. They are true single-supply instrumentation amplifiers with very low DC errors and input common-mode ranges that extends beyond the positive and negative rails. These features make them suitable for applications ranging from general-purpose to high-accuracy.

Excellent long-term stability and very low 1/f noise assure low offset voltage and drift throughout the life of the product.

The INA326 (without shutdown) comes in the MSOP-8 package. The INA327 (with shutdown) is offered in an MSOP-10. Both are specified over the industrial temperature range, –40°C to +85°C, with operation from –40°C to +125°C.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
INA326EA/250ACTIVE-40 to 852.15 | 1kuMSOP (DGK) | 8 View 250 | SMALL T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
INA326EA/250G4ACTIVE-40 to 852.15 | 1kuMSOP (DGK) | 8 View 250 | SMALL T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
INA326EA/2K5ACTIVE-40 to 851.95 | 1kuMSOP (DGK) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
INA326EA/2K5G4ACTIVE-40 to 851.95 | 1kuMSOP (DGK) | 8 View 2500 | 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
INA326EA/250As of 9:08 AM GMT, 15 Oct 2008As of 9:08 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 9733* >10k | 21 Nov 6 Weeks AmericasArrow >1k
  DigiKey >1k
  Newark 772
  AsiaWPI 991
  EuropeSpoerle 250
INA326EA/250G4As of 9:08 AM GMT, 15 Oct 2008As of 9:08 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 9733* >10k | 21 Nov 6 Weeks EuropeFarnell 247
INA326EA/2K5As of 9:08 AM GMT, 15 Oct 2008As of 9:08 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 >10k* >10k | 26 Nov 6 Weeks AmericasDigiKey >1k
  Newark >1k
  EuropeAvnet-SILICA >1k
INA326EA/2K5G4As of 9:08 AM GMT, 15 Oct 2008As of 9:08 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 >10k* >10k | 26 Nov 6 Weeks None Reported
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* 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
INA326EA/250 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
INA326EA/250G4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
INA326EA/2K5 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
INA326EA/2K5G4 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

  • INA326, 327: Precision, Rail-To-Rail I/O Instrumentation Amplifier (Rev. D) (ina326.pdf, 641 KB)
    03 Nov 2004 Download

Application Notes

  • Low-Cost Noise-Immune Isolated Thermocouple Signal Processor (sloa123.htm, 8 KB)
    08 Jan 2007 Abstract
  • Getting the most out of your instrumentation amplifier design (slyt226.pdf, 177 KB)
    10 Oct 2005 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

Simulation Models

  • Spice Model
    • INA326 TINA Macro Model and Test Circuit (Enhanced Model - Long Simulation Time) (sboc169.zip, 12 KB)
      28 Aug 2006 zip
    • INA326T TINA Macro Model and Test Circuit (Standard Model - Recommended) (sboc170.zip, 29 KB)
      28 Aug 2006 zip
  • PSpice Model
    • INA326 PSpice Macromodel  (sbom150.zip, 6 KB)
      28 Aug 2002  zip

Tools & Software

NamePart # Company Tool / Software Type
Calculate Input Common-Mode Range of Instrumentation AmplifiersINA-CMV-CALCTexas InstrumentsCalculation Utilities
SPICE-Based Analog Simulation ProgramTINA-TITexas InstrumentsSimulators
MDACBufferPro Output Buffer Amplifier Selection ToolMDACBUFFERPRO Texas Instruments Application Software 

 Alternative Products - Are similar to INA326
Part #NameComments
INA327 Precision, Low Drift, CMOS Instrumentation Amplifier with Shutdown The INA327 has shutdown and package MSOP-10 
INA321 Micropower single-supply CMOS Instrumentation Amplifier 500µV VOS, 0.5pA IB, 94dB CMRR, 60µA IQ, rail-to-rail output 
INA337 Wide-Temperature, Precision Instrumentation Amplifier Precision, 0.4µV/°C drift, specified –40°C to +125°C 
INA122 Single Supply, MicroPower Instrumentation Amplifier 250µV VOS, 10nA IB, 85µA IQ, rail-to-rail output, 3µV/°C drift 
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 Complementary Products - Can be used with INA326
Part #NameProduct FamilyComments
OPA333 1.8V, 17uA, 2uV, microPOWER CMOS Zero-Drift Series Operational Amplifier PRECISION AMPLIFIERS- LOW OFFSET VOLTAGE   
OPA336 Single-Supply, MicroPower CMOS Operational Amplifiers MicroAmplifier(TM) Series PRECISION AMPLIFIERS- LOW OFFSET VOLTAGE Can be used for both low-side and high-seed current shunt monitor
See Literature sbos222d  
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