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ADS7891 Status: ACTIVE

2.7V-5.25V Digital, 5V Analog, 14 bit, 3 MSPS, Parallel ADC W/Ref


      
         
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See Also

  • ADS7890 - The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.  Has a lower sampling rate
  • ADS7881 - The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.  12 bit higher sampling rate device
  • ADS8401 - The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.  16 bit device with similar sampling rate

View all related products


Datasheet

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 ADS7891
Resolution(Bits)14  
Sample Rate (max)3MSPS  
ArchitectureSAR  
Power Consumption(Typ)(mW)85  
SINAD(dB)77  
SNR(dB)78  
SFDR(dB)90  
DNL(Max)(+/-LSB)0.75  
INL(Max)(+/-LSB)0.75  
No Missing Codes(Bits)14  
No. of Supplies2  
Analog Voltage AV/DD(Min)(V)4.75  
Analog Voltage AV/DD(Max)(V)5.25  
Logic Voltage DV/DD(Min)(V)2.7  
Logic Voltage DV/DD(Max)(V)5.25  
Input Configuration RangeVref  
Reference ModeInt  
RatingCatalog  
Pin/Package48TQFP  
# Input Channels1  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • THS14F03: 14-bit, 3 MSPS ADC with 32-word FIFO
  • ADS8422: 16 Bit 4MSPS Parallel ADC W/Ref, Pseudo Bipolar, Fully Differential Input
  • ADS1610: 16-Bit, 10MSPS Delta-Sigma Analog-to-Digital Converter

More Related Products

Product Information

Features

  • 3 MHz Sample Rate, 14-Bit Resolution
  • Zero Latency
  • Unipolar, Pseudo Differential Input, Range:
    • 0 V to 2.5 V
  • High Speed Parallel Interface
  • 78 dB SNR and 88.5 dB THD at 3 MSPS
  • Power Dissipation 85 mW at 3 MSPS
  • Nap Mode (10 mW Power Dissipation)
  • Power Down (10 µW)
  • Internal Reference
  • Internal Reference Buffer
  • 8-/14-Bit Bus Transfer
  • 48-Pin TQFP Package
  • APPLICATIONS
    • Optical Networking (DWDM, MEMS Based Switching)
    • Spectrum Analyzers
    • High Speed Data Acquisition Systems
    • High Speed Close-Loop Systems
    • Telecommunication
    • Ultra-Sound Detection

View All Features in Datasheet

Description

The ADS7891 is a 14-bit 3-MSPS A-to-D converter with 2.5-V internal reference. The device includes a capacitor based SAR A/D converter with inherent sample and hold. The device offers a 14-bit parallel interface with an additional byte mode that provides easy interface with 8-bit processors. The device has a pseudo-differential input stage.

The –IN swing of ±200 mV is useful to compensate for ground voltage mismatch between the ADC and sensor and also to cancel common-mode noise. With nap mode enabled, the device operates at lower power when used at lower conversion rates. The device is available in a 48-pin TQFP package.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
ADS7891IPFBRACTIVE-40 to 8513.15 | 1kuTQFP (PFB) | 48 View 1000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ADS7891IPFBRG4ACTIVE-40 to 8513.15 | 1kuTQFP (PFB) | 48 View 1000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ADS7891IPFBTACTIVE-40 to 8514.45 | 1kuTQFP (PFB) | 48 View 250 | SMALL T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ADS7891IPFBTG4ACTIVE-40 to 8514.45 | 1kuTQFP (PFB) | 48 View 250 | SMALL 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

Reported Distributor Inventory as of 12:16 PM GMT, 22 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksADS7891IPFBR
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksADS7891IPFBRG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksADS7891IPFBT
AmericasRochester Electronics 375
AsiaWPI 138
WorldwideDigiKey 161
TI Lead Time*: 20 WeeksADS7891IPFBTG4
WorldwideDigiKey  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
ADS7891IPFBR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7891IPFBRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7891IPFBT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7891IPFBTG4 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

Most useful technical documents for ADS7891 Help

Datasheet

Application Notes

View Application Notes for Analog to Digital Converter

User Guides

View User Guides for Analog to Digital Converter

Tools & Software

NamePart # Company Tool / Software Type
Anti-Aliasing Calculation Tool for A to D ConvertersANTIALIASINGCALCTexas InstrumentsCalculation Utilities
Op Amp to ADC Circuit Topology CalculatorADC-INPUT-CALCTexas InstrumentsCalculation Utilities
ADS7891EVM Evaluation ModuleADS7891EVMTexas InstrumentsDevelopment Boards/EVMs
DCPFREETOOL Software Plug-In to Code Composer StudioDCPFREETOOLTexas InstrumentsUtilities/Plug-Ins

Part # Name Product Family Comments
ADS7890   2.7V-5.25V Digital, 5V Analog, 14 Bit, 1.25 MSPS, Serial ADC w/Ref   DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER   The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.  Has a lower sampling rate  
ADS7881   2.7V-5.25V Digital, 5V Analog, 12 Bit, 4MSPS, Parallel ADC with Ref   DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER   The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.  12 bit higher sampling rate device  
ADS8401   16 Bit 1.25MSPS Parallel ADC W Ref   DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER   The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.  16 bit device with similar sampling rate  
ADS8405   16-Bit 1.25 MSPS Unipolar Input Micro Power Sampling ADC   DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER   The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.  16 bit device with similar sampling rate  
Customers Who Evaluated This Product Also Evaluated...
THS14F03 14-bit, 3 MSPS ADC with 32-word FIFO DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS8422 16 Bit 4MSPS Parallel ADC W/Ref, Pseudo Bipolar, Fully Differential Input DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS1610 16-Bit, 10MSPS Delta-Sigma Analog-to-Digital Converter DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS8557 670kSPS, 14-Bit, 6-Channels, Simultaneous Sampling Analog-to-Digital Converter DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS7279 Low-Power, 14-Bit, 1-MHz, Single/Dual Unipolar Input, ADCs with Serial Interface DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS7280 Low-Power, 14-Bit, 1-MHz, Single/Dual Unipolar Input, ADCs with Serial Interface DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS8507 16-Bit 40KSPS Analog-to-Digital Converter w/Internal Reference and Parallel/Serial Interface DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.

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