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ADS1251 Status: ACTIVE

ResolutionPlus 24-Bit, 20kHz, Low Power Analog-to-Digital Converter


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See Also

  • ADS1252 - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.  Has a higher sampling rate
  • ADS1253 - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.  4 channel version of ADS1251
  • ADS1258 - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.  8 channel differential input with very high resolution

Datasheet

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Functional Block Diagram


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 ADS1250 ADS1251ADS1252 ADS1253 ADS1254 ADS1255 ADS1258 
Resolution(Bits)20  24  24  24  24  24  24  
Sample Rate (max)25kSPS  20kSPS  41kSPS  20kSPS  20kSPS  30kSPS  125kSPS  
ArchitectureDelta-Sigma  Delta-Sigma  Delta-Sigma  Delta-Sigma  Delta-Sigma  Delta-Sigma  Delta-Sigma  
Power Consumption(Typ)(mW)75  7.5  40  7.5  4.36  36  42  
DNL(Max)(+/-LSB)1  1  1  1  1  2  1  
INL(Max)(+/-LSB)0.0012%  0.0002%  0.0003%  0.0002%  0.0002%  0.0003%  0.0003%  
No Missing Codes(Bits)20  24  24  24  24  24  24  
ENOB(Bits)18  19  19  19  19  23  21.6  
No. of Supplies1  1  1  1  2  2  2  
Analog Voltage AV/DD(Min)(V)4.75  4.75  4.75  4.75  4.75  4.75  4.75  
Analog Voltage AV/DD(Max)(V)5.25  5.25  5.25  5.25  5.25  5.25  5.25  
Logic Voltage DV/DD(Min)(V)4.75  4.75  4.75  4.75  1.8  1.8  2.5  
Logic Voltage DV/DD(Max)(V)5.25  5.25  5.25  5.25  3.6  3.6  3.6  
Input Configuration RangeVref/PGA (1-8)  Vref  Vref  Vref  Vref  2Vref/PGA(1-64)  1.06Vref  
Reference ModeExt  Ext  Ext  Ext  Ext  Ext  Ext  
RatingCatalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  
Pin/Package16SOIC  8SOIC  8SOIC  16SSOP/QSOP  20SSOP/QSOP  20SSOP  48QFN  
# Input Channels1  1  1  4  4  2  16  
 SamplesSamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • ADS1271: 24-Bit, 105kSPS Industrial Delta-Sigma ADC
  • ADS1281: High Resolution 24-Bit Analog-to Digital Converter
  • ADS1210: 24-Bit Analog-to-Digital Converter
  • INA101: Very High Accuracy Instrumentation Amplifier
  • TPS61200: 0.3V Input Voltage Boost Converter with 1.3A Switches and 'Down Mode' in a 3x3 QFN
  • INA110: Fast-Settling FET-Input Very High Accuracy Instrumentation Amplifier

More Related Products

Product Information

Features

  • 24 BITS—NO MISSING CODES
  • 19 BITS EFFECTIVE RESOLUTION UP TO 20kHz DATA RATE
  • LOW NOISE: 1.5ppm
  • DIFFERENTIAL INPUTS
  • INL: 15ppm (max)
  • EXTERNAL REFERENCE (0.5V to 5V)
  • POWER-DOWN MODE
  • SYNC MODE
  • LOW POWER:
    8mW at 20kHz
    5mW at 10kHz
  • APPLICATIONS
    • CARDIAC DIAGNOSTICS
    • DIRECT THERMOCOUPLE INTERFACES
    • BLOOD ANALYSIS
    • INFRARED PYROMETERS
    • LIQUID/GAS CHROMATOGRAPHY
    • PRECISION PROCESS CONTROL

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Description

The ADS1251 is a precision, wide dynamic range, delta-sigma, Analog-to-Digital (A/D) converter with 24-bit resolution operating from a single +5V supply. The delta-sigma architecture is used for wide dynamic range and to guarantee 24 bits of no missing codes performance. Effective resolution of 19 bits (1.5ppm of rms noise) is achieved for conversion rates up to 20kHz.

The ADS1251 is designed for high-resolution measurement applications in cardiac diagnostics, smart transmitters, industrial process control, weight scales, chromatography, and portable instrumentation. The converter includes a flexible, 2-wire synchronous serial interface for low-cost isolation.

The ADS1251 is a single-channel converter and is offered in an SO-8 package.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
ADS1251UACTIVE-40 to 856.60 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
ADS1251U/2K5ACTIVE 6.00 | 1kuSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ADS1251U/2K5G4ACTIVE 6.00 | 1kuSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ADS1251UG4ACTIVE-40 to 856.60 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint

* 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 12:20 PM GMT, 20 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksADS1251U
AmericasAvnet 130
EuropeAvnet-SILICA 16
TI Lead Time*: 20 WeeksADS1251U/2K5
None Reported
View Distributors
TI Lead Time*: 20 WeeksADS1251U/2K5G4
None Reported
View Distributors
TI Lead Time*: 20 WeeksADS1251UG4
AsiaFarnell Asia 5
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
ADS1251U RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS1251U/2K5 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS1251U/2K5G4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS1251UG4 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 ADS1251 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
DCPFREETOOL Software Plug-In to Code Composer StudioDCPFREETOOLTexas InstrumentsUtilities/Plug-Ins

Part # Name Product Family Comments
ADS1252   ResolutionPlus 24-Bit, 40kHz Analog-to-Digital Converter   DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER   The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.  Has a higher sampling rate  
ADS1253   24-Bit, 20kHz, Low Power Analog-to-Digital Converter   DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER   The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.  4 channel version of ADS1251  
ADS1258   24 Bit, Fast Channel Cycling Delta-Sigma ADC   DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER   The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.  8 channel differential input with very high resolution  
OPA333   1.8V, 17uA, 2uV, microPOWER CMOS Zero-Drift Series Operational Amplifier   PRECISION AMPLIFIER - LOW OFFSET VOLTAGE   OPERATIONAL AMPLIFIER    
OPA277   High Precision Operational Amplifiers   PRECISION AMPLIFIER - LOW OFFSET VOLTAGE   OPERATIONAL AMPLIFIER    
REF5025   Low Noise, Very Low Drift, Precision Voltage Reference   VOLTAGE REFERENCE - SERIES VOLTAGE REFERENCE   SERIES VOLTAGE REFERENCE    
Customers Who Evaluated This Product Also Evaluated...
ADS1271 24-Bit, 105kSPS Industrial Delta-Sigma ADC DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS1281 High Resolution 24-Bit Analog-to Digital Converter DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS1210 24-Bit Analog-to-Digital Converter DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS1241 24-Bit Analog-to-Digital Converter DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS1252 ResolutionPlus 24-Bit, 40kHz Analog-to-Digital Converter DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS1258 24 Bit, Fast Channel Cycling Delta-Sigma ADC DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
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ADS1256 24 Bit, 30kSPS Very Low Noise Delta-Sigma ADC with Multiplexer DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS1274 Quad, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
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