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ADS7890 Status:ACTIVE

2.7V-5.25V Digital, 5V Analog, 14 Bit, 1.25 MSPS, Serial ADC w/Ref

      
         
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See Also

  • ADS7891 - 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 higher sampling rate
  • ADS7886 - The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent. 

Datasheet

Download - PDF Icon
  • ADS7890: 14-Bit, 1.25 MSPS, Low Power, SAR Analog-to-Digital Converter (ads7890.pdf, 370 KB)
    03 Nov 2003 Download

 ADS7890
Resolution(Bits)14  
Sample Rate (max)1.25MSPS  
ArchitectureSAR  
Power Consumption(Typ)(mW)45  
SINAD(dB)77  
SNR(dB)77.5  
SFDR(dB)97  
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

  • ADS8505: 16-Bit 250kHz CMOS Analog-to-Digital Converter w/Parallel Interface 2.5V Internal Reference
  • ADS8370: 16-Bit 600KSPS Serial ADC with Ref and Unipolar Pseudo Diff Input
  • ADS8325: 16-Bit, 100kSPS Serial Out, 2.7V to 5.5V Micro Power Sampling ADC
  • DAC8501: Multiplying, Low-Power, Rail-to-Rail Output, 16-Bit Serial Input Digital-to-Analog Converter
  • TLV5618A: 12-Bit, 2.5 us Dual DAC, Serial Input, Pgrmable Settling Time, Q temp available
  • INA141: Precision, Low Power, G = 10, 100 Instrumentation Amplifier

More Related Products

Product Information

Features

  • 1.25 MHz Sample Rate, 14-Bit Resolution
  • Zero Latency
  • Unipolar, Pseudo Differential Input, Range:
    • 0 V to 2.5 V
  • SPI™ Compatible Serial Interface
  • 77.5 dB SNR and –95 dB THD at 0.5 MHz I/P
  • Power Dissipation 45 mW at 1.25 MSPS
  • Nap Mode (10 mW Power Dissipation)
  • Power Down (10 µW)
  • Internal Reference
  • Internal Reference Buffer
  • 48-Pin TQFP Package
  • APPLICATIONS
    • Optical Networking (DWDM, MEMS Based Switching)
    • Spectrum Analyzers
    • High Speed Data Acquisition Systems
    • High Speed Close-Loop Systems
    • Telecommunication

SPI is a trademark of Motorola, Inc.

Description

The ADS7890 is a 14-bit 1.25-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 serial SPI or DSP compatible interface. 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. The device operates at lower power when used at lower conversion rates because of the nap feature. The device is available in a 48-pin TQFP package.

    

Pricing / Packaging / CAD Design Tools / Samples

Price ($US)PackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price ($US) | QuantityPackage | PinsTop Side MarkingSymbolsFootprintsSamples
ADS7890IPFBRACTIVE-40 to 8513.15 | 100uTQFP (PFB) | 48 View Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ADS7890IPFBRG4ACTIVE-40 to 8513.15 | 100uTQFP (PFB) | 48 View Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ADS7890IPFBTACTIVE-40 to 8513.15 | 100uTQFP (PFB) | 48 View Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ADS7890IPFBTG4ACTIVE-40 to 8513.15 | 100uTQFP (PFB) | 48 View 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
ADS7890IPFBRAs of 9:05 AM GMT, 29 Aug 2008As of 9:05 AM GMT, 29 Aug 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0*  Call**AmericasRochester Electronics 1k
ADS7890IPFBTAs of 9:05 AM GMT, 29 Aug 2008As of 9:05 AM GMT, 29 Aug 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0*  Call**AmericasDigiKey 90
  Rochester Electronics >1k
  AsiaWPI 40
  EuropeAvnet-SILICA 160
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

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

  • ADS7890: 14-Bit, 1.25 MSPS, Low Power, SAR Analog-to-Digital Converter (ads7890.pdf, 370 KB)
    03 Nov 2003 Download

Application Notes

  • A Glossary of Analog-to-Digital Specifications and Performance Characteristics (Rev. A) (sbaa147a.htm, 8 KB)
    12 Jan 2008 Abstract
  • 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
  • Analog-to-Digital Converter Grounding Practices Affect System Performance (sbaa052.htm, 8 KB)
    02 Oct 2000 Abstract
  • Principles of Data Acquisition and Conversion (sbaa051.htm, 8 KB)
    02 Oct 2000 Abstract
  • Interleaving Analog-to-Digital Converters (sbaa049.htm, 8 KB)
    02 Oct 2000 Abstract
  • What Designers Should Know About Data Converter Drift (sbaa046.htm, 8 KB)
    02 Oct 2000 Abstract
  • High Speed Data Conversion (sbaa045.htm, 8 KB)
    02 Oct 2000 Abstract

View Application Notes for Analog to Digital Converters

User Guides

View User Guides for Analog to Digital Converters

More Literature

View More Literature for Analog to Digital Converters

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

 Alternative Products - Are similar to ADS7890
Part #NameComments
ADS7891 2.7V-5.25V Digital, 5V Analog, 14 bit, 3 MSPS, Parallel ADC W/Ref 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 higher sampling rate 
ADS7886 2.35V-5.25V, 12 bit, 1MSPS, Serial ADC The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent.  
Customers Who Evaluated This Product Also Evaluated...
ADS850516-Bit 250kHz CMOS Analog-to-Digital Converter w/Parallel Interface 2.5V Internal ReferenceTI customers also evaluated this product.
ADS837016-Bit 600KSPS Serial ADC with Ref and Unipolar Pseudo Diff InputTI customers also evaluated this product.
ADS832516-Bit, 100kSPS Serial Out, 2.7V to 5.5V Micro Power Sampling ADCTI customers also evaluated this product.
ADS850916-Bit 250kHz CMOS Analog-to-Digital Converter w/Serial Interface 2.5V Internal ReferenceTI customers also evaluated this product.
ADS125824 Bit, Fast Channel Cycling Delta-Sigma ADCTI customers also evaluated this product.
ADS834216-Bit 250 kSPS ADC Par. Out, 4 true bipolar chanelsTI customers also evaluated this product.
ADS121124-Bit Analog-to-Digital ConverterTI customers also evaluated this product.
ADS121624-Bit Analog-to-Digital ConverterTI customers also evaluated this product.
ADS124124-Bit Analog-to-Digital ConverterTI customers also evaluated this product.
ADS78812.7V-5.25V Digital, 5V Analog, 12 Bit, 4MSPS, Parallel ADC with RefTI customers also evaluated this product.
 Complementary Products - Can be used with ADS7890
Customers Who Evaluated This Product Also Evaluated...
Part #NameProduct FamilyComments
DAC8501Multiplying, Low-Power, Rail-to-Rail Output, 16-Bit Serial Input Digital-to-Analog ConverterDATA CONVERTERS-DIGITAL TO ANALOG CONVERTERSTI customers also evaluated this product.
TLV5618A12-Bit, 2.5 us Dual DAC, Serial Input, Pgrmable Settling Time, Q temp availableDATA CONVERTERS-DIGITAL TO ANALOG CONVERTERSTI customers also evaluated this product.
INA141Precision, Low Power, G = 10, 100 Instrumentation AmplifierINSTRUMENTATION AMPLIFIERS-DUAL SUPPLYTI customers also evaluated this product.
DAC85342.7V to 5.5V, Quad Channel, 16-Bit, Serial Input DACDATA CONVERTERS-DIGITAL TO ANALOG CONVERTERSTI customers also evaluated this product.
ISO124Precision Lowest Cost Isolation AmplifierAMPLIFIERS AND LINEAR-ISOLATION AMPLIFIERSTI customers also evaluated this product.
DAC774216-Bit, Single Channel, Parallel Interface with Internal ReferenceDATA CONVERTERS-DIGITAL TO ANALOG CONVERTERSTI customers also evaluated this product.

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