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ADS7885 Status: ACTIVE

2.7V-5.5V, 8 Bit, 3MSPS, Serial ADC

      
         
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Datasheet

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Functional Block Diagram


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 ADS7885
Resolution(Bits)8  
Sample Rate (max)3MSPS  
ArchitectureSAR  
Power Consumption(Typ)(mW)15  
SINAD(dB)49.8  
SNR(dB)49.8  
SFDR(dB)74  
DNL(Max)(+/-LSB)0.4  
INL(Max)(+/-LSB)0.4  
No Missing Codes(Bits)8  
ENOB(Bits)7.98  
No. of Supplies1  
Analog Voltage AV/DD(Min)(V)2.7  
Analog Voltage AV/DD(Max)(V)5.5  
Logic Voltage DV/DD(Min)(V)2.7  
Logic Voltage DV/DD(Max)(V)5.5  
Input Configuration RangeVDD  
RatingCatalog  
Pin/Package6SOT-23  
# Input Channels1  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • ADS7886: 2.35V-5.25V, 12 bit, 1MSPS, Serial ADC
  • TL431A: Adjustable Precision Shunt Regulator
  • TPS2041B: Single-Channel Current-Limited Power Distribution Switch
  • SN74LVC1G08: Single 2-Input Positive-AND Gate

Product Information

Features

  • 3-MHz Sample Rate Serial Device
  • 10-Bit Resolution — ADS7884
  • 8-Bit Resolution — ADS7885
  • Zero Latency
  • 48-MHz Serial Interface
  • Supply Range: 2.7 V to 5.5 V
  • Low Power Dissipation:
    • 6.8 mW at 3-V VDD, 2.5 MSPS
    • 15 mw at 5-V VDD, 3 MSPS
  • ±0.3 LSB INL, ±0.3 LSB DNL — ADS7884
  • ±0.15 LSB INL, ±0.1 LSB DNL — ADS7885
  • 61.7 dB SINAD, -81 dB THD — ADS7884
  • 49.8 dB SINAD, -68 dB THD — ADS7885
  • Unipolar Input Range: 0 V to VDD
  • Powerdown Current: 1 µA
  • Wide Input Bandwidth: 30 MHz at 3 dB
  • 6-Pin SOT23 Package
  • APPLICATIONS
    • Base Band Converters in Radio Communication
    • Motor Current/Bus Voltage Sensors in Digital Drives
    • Optical Networking (DWDM, MEMS Based Switching)
    • Optical Sensors
    • Battery Powered Systems
    • Medical Instrumentations
    • High-Speed Data Acquisition Systems
    • High-Speed Closed-Loop Systems

Description

The ADS7884 is a 10-bit, 3-MSPS analog-to-digital converter (ADC), and the ADS7885 is a 8-bit, 3-MSPS ADC. The devices include a capacitor based SAR A/D converter with inherent sample and hold. The serial interface in each device is controlled by the CS and SCLK signals for glueless connections with microprocessors and DSPs. The input signal is sampled with the falling edge of CS, and SCLK is used for conversion and serial data output.

The devices operate from a wide supply range from 2.7 V to 5.5 V. The low power consumption of the devices make them suitable for battery-powered applications. The devices also include a power saving powerdown feature for when the devices are operated at lower conversion speeds.

The high level of the digital input to the device is not limited to device VDD. This means the digital input can go as high as 5.5 V when device supply is 2.7 V. This feature is useful when digital signals are coming from other circuit with different supply levels. Also this relaxes restriction on power up sequencing.

The ADS7884 and ADS7885 are available in a 6-pin SOT23 package and are specified for operation from -40°C to 125°C.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingSamples
DeviceStatusPrice | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSamples
ADS7885SDBVRACTIVE0.95 | 1kuSOT-23 (DBV) | 6 View 3000 | LARGE T&RPurchase Samples
ADS7885SDBVTACTIVE1.05 | 1kuSOT-23 (DBV) | 6 View 250 | SMALL T&R

* 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
ADS7885SDBVRAs of 12:08 PM GMT, 03 Jul 2009As of 12:08 PM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasDigiKey  Available
ADS7885SDBVTAs of 12:08 PM GMT, 03 Jul 2009As of 12:08 PM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasArrow 250
 Avnet 250
 DigiKey 850
 Mouser Electronics 171
 Newark 202
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
ADS7885SDBVR  Pb-Free (RoHS Exempt) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7885SDBVT  Pb-Free (RoHS Exempt) 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 ADS7885 Help

Datasheet

Application Notes

View Application Notes for Analog to Digital Converters

User Guides

View User Guides 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
ADS7885 Evaluation ModuleADS7885EVMTexas InstrumentsDevelopment Boards/EVMs

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
ADS7886 2.35V-5.25V, 12 bit, 1MSPS, Serial ADC   TI customers also evaluated this product.
TL431A Adjustable Precision Shunt Regulator REFERENCES-SHUNT VOLTAGE REFERENCES TI customers also evaluated this product.
TPS2041B Single-Channel Current-Limited Power Distribution Switch PCMCIA AND USB-USB POWER SWITCHES TI customers also evaluated this product.
SN74LVC1G08 Single 2-Input Positive-AND Gate LITTLE LOGIC-SINGLE-GATES TI customers also evaluated this product.

Support and Community

Videos

Support Community-Video
Analog Tutorial - The Basics of the Effective Number of Bits
Added: 5 months ago
Views:2472
Duration:10:12
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