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ADS7955 Status: ACTIVE

10 bit, 1 MSPS, 8 Ch, Single Ended, Micro Power, sr i/f, SAR ADC


      
         
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Datasheet

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Functional Block Diagram


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 ADS7950 ADS7951 ADS7952 ADS7953 ADS7954 ADS7955ADS7956 ADS7957 ADS7958 ADS7959 ADS7960 ADS7961 
Resolution(Bits)12  12  12  12  10  10  10  10  8  8  8  8  
Sample Rate (max)1MSPS  1MSPS  1MSPS  1MSPS  1MSPS  1MSPS  1MSPS  1MSPS  1MSPS  1MSPS  1MSPS  1MSPS  
ArchitectureSAR  SAR  SAR  SAR  SAR  SAR  SAR  SAR  SAR  SAR  SAR  SAR  
Power Consumption(Typ)(mW)11.5  11.5  11.5  11.5  11.5  11.5  11.5  11.5  11.5  11.5  11.5  11.5  
SINAD(dB)69  69  69  69  60  60  60  60  49  49  49  49  
SNR(dB)70  70  70  70  60  60  60  60  49  49  49  49  
SNR(Typ)(dB)71.7  71.7  71.7  71.7  61.7  61.7  61.7  61.7  49.8  49.8  49  49  
SFDR(dB)84  84  84  84  82  82  82  82  78  78  78  78  
DNL(Max)(+/-LSB)1  1  1  1  0.5  0.5  0.5  0.5  0.3  0.3  0.3  0.3  
INL(Max)(+/-LSB)1  1  1  1  0.5  0.5  0.5  0.5  0.3  0.3  0.3  0.3  
No Missing Codes(Bits)12  12  12  12  10  10  10  10  8  8  8  8  
ENOB(Bits)11.29  11.29  11.29  11.29  9.66  9.66  9.66  9.66  7.85  7.85  7.85  7.85  
No. of Supplies2  2  2  2  2  2  2  2  2  2  2  2  
Analog Voltage AV/DD(Min)(V)2.7  2.7  2.7  2.7  2.7  2.7  2.7  2.7  2.7  2.7  2.7  2.7  
Analog Voltage AV/DD(Max)(V)5.25  5.25  5.25  5.25  5.25  5.25  5.25  5.25  5.25  5.25  5.25  5.25  
Logic Voltage DV/DD(Min)(V)1.7  1.7  1.7  1.7  1.7  1.7  1.7  1.7  1.7  1.7  1.7  1.7  
Logic Voltage DV/DD(Max)(V)5.25  5.25  5.25  5.25  5.25  5.25  5.25  5.25  5.25  5.25  5.25  5.25  
Input Configuration RangeVref, 2Vref  Vref, 2Vref  Vref, 2Vref  Vref, 2Vref  Vref, 2Vref  Vref, 2VREF  Vref, 2VREF  Vref, 2Vref  Vref. 2Vref  Vref, 2Vref  Vref, 2Vref  Vref, 2Vref  
Reference ModeExt  Ext  Ext  Ext  Ext  Ext  Ext  Ext  Ext  Ext  Ext  Ext  
RatingCatalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  
Pin/Package24VQFN, 30TSSOP  24VQFN, 30TSSOP  32QFN, 38TSSOP  32QFN, 38TSSOP  24VQFN, 30TSSOP  24VQFN, 30TSSOP  32QFN, 38TSSOP  32QFN, 38TSSOP  24VQFN, 30TSSOP  24VQFN, 30TSSOP  32QFN, 38TSSOP  32QFN, 38TSSOP  
# Input Channels4  8  12  16  4  8  12  16  4  8  12  16  
 SamplesSamplesSamplesSamplesSamplesSamplesSamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventoryInventoryInventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • ADS7951: 12 bit, 1 MSPS,8 ch, single ended, micro power, sr i/f, SAR ADC

Product Information

Features

  • 1-MHz Sample Rate Serial Devices
  • Product Family of 12/10/8-Bit Resolution
  • Zero Latency
  • 20-MHz Serial Interface
  • Analog Supply Range: 2.7 to 5.25V
  • I/O Supply Range: 1.7 to 5.25V
  • Two SW Selectable Unipolar, Input Ranges: 0 to 2.5V and 0 to 5V
  • Auto and Manual Modes for Channel Selection
  • 12,8,4-Channel Devices can Share 16 Channel Device Footprint
  • Two Programmable Alarm Levels per Channel
  • Four Individually Configurable GPIOs
  • Typical Power Dissipation: 14.5 mW (+VA = 5V, +VBD = 3V) at 1 MSPS
  • Power-Down Current (1 µA)
  • Input Bandwidth (47 at 3dB)
  • 30-Pin and 38-Pin TSSOP Packages
  • APPLICATIONS
    • PLC / IPC
    • Battery Powered Systems
    • Medical Instrumentation
    • Digital Power Supplies

View All Features in Datasheet

Description

The ADS79XX is a 12/10/8-bit multichannel analog-to-digital converter family. The following table shows all twelve devices from this product family.

The devices include a capacitor based SAR A/D converter with inherent sample and hold.

The devices accept a wide analog supply range from 2.7V to 5.25V. Very low power consumption makes these devices suitable for battery-powered and isolated power supply applications.

A wide 1.7V to 5.25V I/O supply range facilitates a glue-less interface with the most commonly used CMOS digital hosts.

The serial interface is controlled by CS and SCLK for easy connection with microprocessors and DSP.

The input signal is sampled with the falling edge of CS. It uses SCLK for conversion, serial data output, and reading serial data in.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSamples
ADS7955SDBTACTIVE-40 to 1253.00 | 1kuTSSOP (DBT) | 30 View 60 | TUBE
ADS7955SDBTG4ACTIVE-40 to 1253.00 | 1kuTSSOP (DBT) | 30 View 60 | TUBE
ADS7955SDBTRACTIVE-40 to 1252.70 | 1kuTSSOP (DBT) | 30 View 2000 | LARGE T&RPurchase Samples
ADS7955SDBTRG4ACTIVE-40 to 1252.70 | 1kuTSSOP (DBT) | 30 View 2000 | LARGE T&RPurchase Samples
ADS7955SRGERPREVIEW-40 to 125 VQFN (RGE) | 24 View 3000Not Available
ADS7955SRGETPREVIEW-40 to 125 VQFN (RGE) | 24 View 250Not Available

* 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 12:17 PM GMT, 20 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksADS7955SDBT
AsiaFarnell Asia 115
WPI 58
EuropeFarnell 115
WorldwideDigiKey 638
Mouser Electronics >1k
TI Lead Time*: 20 WeeksADS7955SDBTG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksADS7955SDBTR
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksADS7955SDBTRG4
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
ADS7955SDBT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7955SDBTG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7955SDBTR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7955SDBTRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7955SRGER      View
ADS7955SRGET      View

* 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 ADS7955 Help

Datasheet

Application Notes

View Application Notes for Analog to Digital Converter

User Guides

View User Guides for Analog to Digital Converter

More Literature

View More Literature 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

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
ADS7951 12 bit, 1 MSPS,8 ch, single ended, micro power, sr i/f, SAR ADC DATA CONVERTERS-ANALOG TO DIGITAL CONVERTER TI customers also evaluated this product.

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