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ADS1281 Status: ACTIVE

High Resolution 24-Bit Analog-to Digital Converter


      
         
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See Also

  • ADS1282 - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.  4 channel version of ADS1281. Has onboard PGA
  • ADS1271 - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.  Has a lower sampling rate
  • ADS1274 - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.  4 channel device. Lower sampling rate

View all related products

 ADS1281ADS1282 
Resolution(Bits)31  31  
Sample Rate (max)4kSPS  4kSPS  
ArchitectureDelta-Sigma  Delta-Sigma  
Power Consumption(Typ)(mW)12  27  
SNR(dB)130  130  
SNR(Typ)(dB)130  130  
SFDR(dB)123  123  
DNL(Max)(+/-LSB)1  1  
INL(Max)(+/-LSB)0.00006%  0.00006%  
No Missing Codes(Bits)31  31  
No. of Supplies2  2  
Analog Voltage AV/DD(Min)(V)4.75  4.75  
Analog Voltage AV/DD(Max)(V)5.25  5.25  
Logic Voltage DV/DD(Min)(V)1.65  1.65  
Logic Voltage DV/DD(Max)(V)3.6  3.6  
Input Configuration Range0.5Vref  0.5Vref/PGA  
Reference ModeExt  Ext  
RatingCatalog  Catalog  
Pin/Package24TSSOP  28TSSOP  
# Input Channels1  2  
 SamplesSamples
 InventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • ADS1282: Ultra High Resolution Delta Sigma ADC with PGA for Seismic and Energy Exploration
  • ADS1271: 24-Bit, 105kSPS Industrial Delta-Sigma ADC
  • ADS1259: Low-Noise, 14kSPS, 24-Bit Analog-to-Digital Converter
  • REF200: Dual Current Source/Current Sink

More Related Products

Product Information

Features

  • High Resolution:
    • 130dB SNR (250SPS)
    • 127dB SNR (500SPS)
  • High Accuracy:
    • THD: –122dB (typ), –115dB (max)
    • INL: 0.6ppm
  • Inherently Stable Modulator with Fast
    Responding Over-Range Detection
  • Flexible Digital Filter:
    • Sinc + FIR + IIR (Selectable)
    • Linear or Minimum Phase Response
    • Programmable High-Pass Filter
    • Selectable FIR Data Rates:
      • 250SPS to 4kSPS
  • Filter Bypass Option
  • Low Power Consumption:
    • Operating: 12mW
    • Shutdown: 10µW
  • Calibration Engine for Offset and
    Gain Correction
  • SYNC Input
  • Analog Supply:
    • Unipolar (+5V) or Bipolar (±2.5V)
  • Digital Supply: 1.8V to 3.3V
  • APPLICATIONS
    • Energy Exploration
    • Seismic Monitoring
    • High-Accuracy Instrumentation

All other trademarks are the property of their respective owners.

Description

The ADS1281 is an extremely high-performance, single-chip analog-to-digital converter (ADC) designed for the demanding needs of energy exploration and seismic monitoring environments. The single-chip design promotes board area savings for improvements in high-density applications.

The converter uses a fourth-order, inherently stable, delta-sigma () modulator that provides outstanding noise and linearity performance. The modulator is used either in conjunction with the on-chip digital filter, or can be bypassed for use with post-processing filters.

The digital filter consists of sinc and finite impulse response (FIR) low-pass stages followed by an infinite impulse response (IIR) high-pass filter (HPF) stage. Selectable decimation provides data rates from 250 to 4000 samples per second (SPS). The FIR low-pass stage provides both linear and minimum phase response. The HPF features an adjustable corner frequency. On-chip gain and offset scaling registers support system calibration.

The synchronization input (SYNC) can be used to synchronize the conversions of multiple ADS1281s. The SYNC input also accepts a clock input for continuous alignment of conversions from an external source.

Together, the modulator and filter dissipate only 12mW. The ADS1281 is available in a compact TSSOP-24 package and is fully specified from –40°C to +85°C, with a maximum operating range to +125°C.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusPrice | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
ADS1281IPWACTIVE34.50 | 1kuTSSOP (PW) | 24 View 60 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ADS1281IPWG4ACTIVE34.50 | 1kuTSSOP (PW) | 24 View 60 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ADS1281IPWRACTIVE28.75 | 1kuTSSOP (PW) | 24 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
ADS1281IPWRG4ACTIVE28.75 | 1kuTSSOP (PW) | 24 View 2000 | LARGE T&R 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 12:10 PM GMT, 06 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 4 WeeksADS1281IPW
AmericasArrow 30
Newark 16
AsiaFarnell Asia 16
EuropeFarnell 13
WorldwideDigiKey  Available
Mouser Electronics 98
TI Lead Time*: 4 WeeksADS1281IPWG4
EuropeEBV Elektronik 5
WorldwideDigiKey  Available
TI Lead Time*: 6 WeeksADS1281IPWR
AmericasRochester Electronics >1k
AsiaWPI >1k
WorldwideDigiKey >1k
Mouser Electronics 178
TI Lead Time*: 6 WeeksADS1281IPWRG4
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
ADS1281IPW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
ADS1281IPWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
ADS1281IPWR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
ADS1281IPWRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView

* 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 ADS1281 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
ADCPro(TM) Analog-to-Digital Converter Evaluation SoftwareADCPRO Texas Instruments Application Software 

Part # Name Product Family Comments
ADS1282   Ultra High Resolution Delta Sigma ADC with PGA for Seismic and Energy Exploration   DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER   The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.  4 channel version of ADS1281. Has onboard PGA  
ADS1271   24-Bit, 105kSPS Industrial Delta-Sigma ADC   DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER   The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.  Has a lower sampling rate  
ADS1274   Quad, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC   DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER   The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.  4 channel device. Lower sampling rate  
ADS1278   Octal, 128kHz, Simultaneous Sampling 24-Bit 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 device. Lower sampling rate  
OPA227   High Precision, Low Noise 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...
ADS1282 Ultra High Resolution Delta Sigma ADC with PGA for Seismic and Energy Exploration DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS1271 24-Bit, 105kSPS Industrial Delta-Sigma ADC DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS1259 Low-Noise, 14kSPS, 24-Bit Analog-to-Digital Converter DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS1278 Octal, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS1251 ResolutionPlus 24-Bit, 20kHz, Low Power Analog-to-Digital Converter DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS1675 4MSPS, 24-Bit Analog-to-Digital Converter 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.
ADS1672 High Speed High Resolution 625kSPS 24 bit Delta Sigma ADC 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.
ADS1252 ResolutionPlus 24-Bit, 40kHz Analog-to-Digital Converter DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
REF200 Dual Current Source/Current Sink VOLTAGE REFERENCE-CURRENT REFERENCE TI customers also evaluated this product.

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