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LOG101 Status: ACTIVE

Logarithmic Amplifier

      
         
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Datasheet

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 LOG101
Scale Factor(V/decade)1  
Input Current Range(Min)(nA)100  
Input Current Range(Max)(mA)3.5  
Conformity Error (initial 5 decades)(Max)(%)0.2  
Conformity Error (initial 5 decades) (typ. over temp)(%/degree C)0.0001  
Offset Voltage (Input Amplifiers)(Max)(mV)1.5  
Vs (+/-)(Min)(V)4.5  
Vs (+/-)(Max)(V)18  
Iq(Max)(mA)1.5  
Reference TypeExternal  
Full-Scale Output Voltage(Min)(+/- V)1.2  
Full-Scale Output Voltage(Max)(+/- V)1.5  
Operating Temp Range(Celsius)-40 to 85  
Pin/Package8SOIC  
RatingCatalog  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

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  • ADS8364: 16-Bit 250 kSPS 6 ADCs, Parallel Out, W/6 x FIFO W/6 Ch.
  • INA103: Low Noise, Low Distortion Instrumentation Amplifier
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Product Information

Features

  • EASY-TO-USE COMPLETE CORE FUNCTION
  • HIGH ACCURACY: 0.01% FSO Over 5 Decades
  • WIDE INPUT DYNAMIC RANGE:
         7.5 Decades, 100pA to 3.5mA
  • LOW QUIESCENT CURRENT: 1mA
  • WIDE SUPPLY RANGE: ±4.5V to ±18V
  • APPLICATIONS
    • LOG, LOG RATIO, ANTI-LOG COMPUTATION:
           Communication, Analytical, Medical, Industrial, Test, and General Instrumentation
    • PHOTODIODE SIGNAL COMPRESSION AMPS
    • ANALOG SIGNAL COMPRESSION IN FRONT OF ANALOG-TO-DIGITAL (A/D)CONVERTERS

Note: Protected under US Patent #6,667,650; other patents pending.

Description

The LOG101 is a versatile integrated circuit that computes the logarithm or log ratio of an input current relative to a reference current.

The LOG101 is tested over a wide dynamic range of input signals. In log ratio applications, a signal current can come from a photodiode, and a reference current from a resistor in series with a precision external reference.

The output signal at VOUT is trimmed to 1V per decade of input current allowing seven decades of input current dynamic range.

Low DC offset voltage and temperature drift allow accurate measurement of low-level signals over a wide environmental temperature range. The LOG101 is specified over the temperature range –5°C to +75°C, with operation over –40°C to +85°C.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
LOG101AIDACTIVE-40 to 857.65 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
LOG101AIDE4ACTIVE-40 to 857.65 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
LOG101AIDRACTIVE-40 to 856.95 | 1kuSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
LOG101AIDRE4ACTIVE-40 to 856.95 | 1kuSOIC (D) | 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
LOG101AIDAs of 11:22 AM GMT, 03 Jul 2009As of 11:22 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 8 Weeks AmericasAvnet 99
 DigiKey 929
 Rochester Electronics >1k
 EuropeAvnet-SILICA 280
LOG101AIDE4As of 11:22 AM GMT, 03 Jul 2009As of 11:22 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 8 Weeks AmericasArrow 100
 DigiKey  Available
 EuropeFarnell 101
LOG101AIDRAs of 11:22 AM GMT, 03 Jul 2009As of 11:22 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasDigiKey  Available
 Rochester Electronics >1k
LOG101AIDRE4As of 11:22 AM GMT, 03 Jul 2009As of 11:22 AM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasDigiKey  Available
View all Distributors  

** 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
LOG101AID RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
LOG101AIDE4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
LOG101AIDR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
LOG101AIDRE4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView

* 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

Most useful technical documents for LOG101 Help

Datasheet

Simulation Models

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