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ADS1278 Status: ACTIVE

Octal, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC


      
         
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See Also

  • ADS1274 - It is an 4-channel version of the ADS1278
  • ADS1258 - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 
  • ADS1271 - Single channel version of the ADS1278

View all related products


Datasheet

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Functional Block Diagram


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 ADS1174 ADS1178 ADS1271 ADS1274 ADS1278
Resolution(Bits)16  16  24  24  24  
Sample Rate (max)52kSPS  52kSPS  105kSPS  144kSPS  144kSPS  
ArchitectureDelta-Sigma  Delta-Sigma  Delta-Sigma  Delta-Sigma  Delta-Sigma  
Power Consumption(Typ)(mW)135  245  92  275  530  
SNR(dB)  109  111  111  
SNR(Typ)(dB)97  97     
SFDR(dB)106  106  108  109  109  
DNL(Max)(+/-LSB)1  1  1  1  1  
INL(Max)(+/-LSB)0.0045%  0.0045%  0.0006%  0.0003%  0.0003%  
No Missing Codes(Bits)16  16  24  24  24  
No. of Supplies2  2  2  3  3  
Analog Voltage AV/DD(Min)(V)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  
Logic Voltage DV/DD(Min)(V)1.65  1.65  1.65  1.65  1.65  
Logic Voltage DV/DD(Max)(V)1.95  1.95  3.6  3.6  3.6  
Input Configuration RangeVref  Vref  1.06Vref  Vref  Vref  
Reference ModeExt  Ext  Ext  Ext  Ext  
RatingCatalog  Catalog  Catalog  Catalog  Catalog  
Pin/Package64HTQFP  64HTQFP  16TSSOP  64HTQFP  64HTQFP  
# Input Channels4  8  1  4  8  
 SamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • ADS1258: 24 Bit, Fast Channel Cycling Delta-Sigma ADC
  • ADS1271: 24-Bit, 105kSPS Industrial Delta-Sigma ADC
  • ADS1274: Quad, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC
  • THS4521: Very low power rail-to-rail output fully differential amplifier
  • REF5025: Low Noise, Very Low Drift, Precision Voltage Reference
  • MAX3232: 3-V to 5.5-V Multichannel RS-232 Line Driver/Receiver

More Related Products

Product Information

Features

  • Simultaneously Measure Four/Eight Channels
  • Up to 144kSPS Data Rate
  • AC Performance:
    70kHz Bandwidth
    111dB SNR (High-Resolution Mode)
    -108dB THD
  • DC Accuracy:
    0.8µV/°C Offset Drift
    1.3ppm/°C Gain Drift
  • Selectable Operating Modes:
    High-Speed: 144kSPS, 106dB SNR
    High-Resolution: 52kSPS, 111dB SNR
    Low-Power: 52kSPS, 31mW/ch
    Low-Speed: 10kSPS, 7mW/ch
  • Linear Phase Digital Filter
  • SPI or Frame-Sync Serial Interface
  • Low Sampling Aperture Error
  • Modulator Output Option (digital filter bypass)
  • Analog Supply: 5V
  • Digital Core: 1.8V
  • I/O Supply: 1.8V to 3.3V
  • APPLICATIONS
    • Vibration/Modal Analysis
    • Multi-Channel Data Acquisition
    • Acoustics/Dynamic Strain Gauges
    • Pressure Sensors

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Description

Based on the single-channel ADS1271, the ADS1274 (quad) and ADS1278 (octal) are 24-bit, delta-sigma ( ) analog-to-digital converters (ADCs) with data rates up to 144k samples per second (SPS), allowing simultaneous sampling of four or eight channels. The devices are offered in identical packages, permitting drop-in expandability.

Traditionally, industrial delta-sigma ADCs offering good drift performance use digital filters with large passband droop. As a result, they have limited signal bandwidth and are mostly suited for dc measurements. High-resolution ADCs in audio applications offer larger usable bandwidths, but the offset and drift specifications are significantly weaker than respective industrial counterparts. The ADS1274 and ADS1278 combine these types of converters, allowing high-precision industrial measurement with excellent dc and ac specifications.

The high-order, chopper-stabilized modulator achieves very low drift with low in-band noise. The onboard decimation filter suppresses modulator and signal out-of-band noise. These ADCs provide a usable signal bandwidth up to 90% of the Nyquist rate with less than 0.005dB of ripple.

Four operating modes allow for optimization of speed, resolution, and power. All operations are controlled directly by pins; there are no registers to program. The devices are fully specified over the extended industrial range (-40°C to +105°C) and are available in an HTQFP-64 PowerPAD package.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsSamples
ADS1278IPAPRACTIVE-40 to 10523.95 | 1kuHTQFP (PAP) | 64 View 1000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
ADS1278IPAPRG4ACTIVE-40 to 10523.95 | 1kuHTQFP (PAP) | 64 View 1000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
ADS1278IPAPTACTIVE-40 to 10524.95 | 1kuHTQFP (PAP) | 64 View 250 | SMALL T&R Download CAD Format for this Symbol
ADS1278IPAPTG4ACTIVE-40 to 10524.95 | 1kuHTQFP (PAP) | 64 View 250 | SMALL T&R Download CAD Format for this Symbol

* 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*: 6 WeeksADS1278IPAPR
AsiaWPI 270
WorldwideDigiKey  Available
TI Lead Time*: 6 WeeksADS1278IPAPRG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksADS1278IPAPT
AmericasNewark 288
AsiaFarnell Asia 32
WPI 166
EuropeCompel 300
Farnell 28
WorldwideDigiKey 350
TI Lead Time*: 20 WeeksADS1278IPAPTG4
EuropeSpoerle 130
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
ADS1278IPAPR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
ADS1278IPAPRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
ADS1278IPAPT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-3-260C-168 HRViewView
ADS1278IPAPTG4 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 ADS1278 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
ADS1278 Evaluation ModuleADS1278EVMTexas InstrumentsDevelopment Boards/EVMs
ADS1278EVM-PDK Evaluation ModuleADS1278EVM-PDKTexas InstrumentsDevelopment Boards/EVMs
ADCPro(TM) Analog-to-Digital Converter Evaluation SoftwareADCPRO Texas Instruments Application Software 

Simulation Models

Part # Name Product Family Comments
ADS1274   Quad, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC   DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER   It is an 4-channel version of the ADS1278  
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.   
ADS1271   24-Bit, 105kSPS Industrial Delta-Sigma ADC   DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER   Single channel version of the ADS1278  
ADS1281   High Resolution 24-Bit Analog-to Digital Converter   DATA CONVERTERS - ANALOG TO DIGITAL CONVERTER   The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.  Single channel higher resolution device  
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 higher resolution device with onboard PGA  
THS4521   Very low power rail-to-rail output fully differential amplifier   OPERATIONAL AMPLIFIER - FULLY DIFFERENTIAL AMPLIFIER   Ultra-Low Power, Fully Differential ADC drivers for the ADS127x Delta-Sigma ADC Family    
Customers Who Evaluated This Product Also Evaluated...
ADS1258 24 Bit, Fast Channel Cycling Delta-Sigma ADC 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.
ADS1274 Quad, 128kHz, Simultaneous Sampling 24-Bit Delta Sigma ADC DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
ADS1256 24 Bit, 30kSPS Very Low Noise Delta-Sigma ADC with Multiplexer DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.
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.
ADS1178 Octal, Simultaneous Sampling, 16-Bit Analog-to-Digitalconverter 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.
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