ADS7846 Status: ACTIVE

4-wire Touch Screen Controller

      Burr-Brown
         
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Datasheet

Download - PDF Icon
  • Touch-Screen Controller (Rev. H) (ads7846.pdf, 910 KB)
    27 Jan 2005 Download

 ADS7846
Touch Panel4-Wire  
SAR ADC Resolution(Bits)12  
SAR Sample Rate(Max)(kSPS)125  
InterfaceSerial, SPI  
Vref (Int/Ext)Int  
Supply Voltage(Min)(V)2.7  
Supply Voltage(Max)(V)5.25  
Pin/Package16QFN,16SSOP/QSOP,16TSSOP,48BGA MICROSTAR JUNIOR  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

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  • TLV320AIC23B: Low-Power Stereo CODEC with HP Amplifier
  • TPA2005D1: 1.4-W Mono, Fully Differential, Filter-Free Class-D Audio Amplifier

Product Information

Features

  • SAME PINOUT AS ADS7843
  • 2.2V TO 5.25V OPERATION
  • INTERNAL 2.5V REFERENCE
  • DIRECT BATTERY MEASUREMENT (0V to 6V)
  • ON-CHIP TEMPERATURE MEASUREMENT
  • TOUCH-PRESSURE MEASUREMENT
  • QSPI™/SPI™ 3-WIRE INTERFACE
  • AUTO POWER-DOWN
  • TSSOP-16, SSOP-16, QFN-16, AND VFBGA-48 PACKAGES
  • APPLICATIONS
    • PERSONAL DIGITAL ASSISTANTS
    • PORTABLE INSTRUMENTS
    • POINT-OF-SALES TERMINALS
    • PAGERS
    • TOUCH SCREEN MONITORS
    • CELLULAR PHONES

US Patent No. 6246394
QSPI and SPI are registered trademarks of Motorola.
All trademarks are the property of their respective owners.

Description

The ADS7846 is a next-generation version to the industry standard ADS7843 4-wire touch screen controller. The ADS7846 is 100% pin-compatible with the existing ADS7843, and drops into the same socket. This allows for easy upgrade of current applications to the new version. Only software changes are required to take advantage of the added features of direct battery measurement, temperature measurement, and touch-pressure measurement. The ADS7846 also has an on-chip 2.5V reference that can be used for the auxiliary input, battery monitor, and temperature measurement modes. The reference can also be powered down when not used to conserve power. The internal reference operates down to 2.7V supply voltage while monitoring the battery voltage from 0V to 6V.

The low-power consumption of < 0.75mW typ at 2.7V (reference off), high speed (up to 125kHz clock rate), and on-chip drivers make the ADS7846 an ideal choice for battery-operated systems such as personal digital assistants (PDAs) with resistive touch screens, pagers, cellular phones, and other portable equipment. The ADS7846 is available in the small TSSOP-16, SSOP-16, QFN-16, and VFBGA-48 packages and is specified over the –40°C to +85°C temperature range.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
ADS7846EACTIVE-40 to 852.05 | 1kuSSOP/QSOP (DBQ) | 16 View 100 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
ADS7846E/2K5ACTIVE-40 to 852.05 | 1kuSSOP/QSOP (DBQ) | 16 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ADS7846E/2K5G4ACTIVE-40 to 852.05 | 1kuSSOP/QSOP (DBQ) | 16 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ADS7846EG4ACTIVE-40 to 852.05 | 1kuSSOP/QSOP (DBQ) | 16 View 100 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
ADS7846IGQCRACTIVE-40 to 852.50 | 1kuBGA MICROSTAR JUNIOR (GQC) | 48 View 2500 | LARGE T&R Download CAD Format for this Symbol Purchase Samples
ADS7846IRGVRACTIVE-40 to 852.05 | 1kuQFN (RGV) | 16 View 2500 | LARGE T&R Download CAD Format for this Symbol Purchase Samples
ADS7846IRGVRG4ACTIVE-40 to 852.05 | 1kuQFN (RGV) | 16 View 2500 | LARGE T&R Download CAD Format for this Symbol Purchase Samples
ADS7846IRGVTACTIVE-40 to 852.25 | 1kuQFN (RGV) | 16 View 250 | SMALL T&R Download CAD Format for this Symbol 
ADS7846IRGVTG4ACTIVE-40 to 852.25 | 1kuQFN (RGV) | 16 View 250 | SMALL T&R Download CAD Format for this Symbol 
ADS7846NACTIVE-40 to 852.05 | 1kuTSSOP (PW) | 16 View 90 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
ADS7846N/2K5ACTIVE-40 to 852.05 | 1kuTSSOP (PW) | 16 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ADS7846N/2K5G4ACTIVE-40 to 852.05 | 1kuTSSOP (PW) | 16 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
ADS7846NG4ACTIVE-40 to 852.05 | 1kuTSSOP (PW) | 16 View 90 | 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

  TI Inventory Status Reported Distributor Inventory
ADS7846EAs of 9:21 AM GMT, 15 Oct 2008As of 9:21 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 14 Jan 16 Weeks AmericasNewark 539
  Rochester Electronics 66
  AsiaWPI 88
  EuropeArrow Southern Europe 400
  EBV Elektronik 11
ADS7846E/2K5As of 9:21 AM GMT, 15 Oct 2008As of 9:21 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 14 Jan 16 Weeks AmericasRochester Electronics >1k
ADS7846E/2K5G4As of 9:21 AM GMT, 15 Oct 2008As of 9:21 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 14 Jan 16 Weeks None Reported
View Distributors
   
ADS7846EG4As of 9:21 AM GMT, 15 Oct 2008As of 9:21 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 14 Jan 16 Weeks EuropeEBV Elektronik 900
  Farnell 428
ADS7846IGQCRAs of 9:21 AM GMT, 15 Oct 2008As of 9:21 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 30 Dec 12 Weeks None Reported
View Distributors
   
ADS7846IRGVRAs of 9:21 AM GMT, 15 Oct 2008As of 9:21 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 11 Nov 4 Weeks None Reported
View Distributors
   
ADS7846IRGVRG4As of 9:21 AM GMT, 15 Oct 2008As of 9:21 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 11 Nov 4 Weeks None Reported
View Distributors
   
ADS7846IRGVTAs of 9:21 AM GMT, 15 Oct 2008As of 9:21 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 7250*  1 Weeks AmericasDigiKey 330
  Mouser Electronics 244
  Rochester Electronics >1k
  AsiaWPI 270
ADS7846IRGVTG4As of 9:21 AM GMT, 15 Oct 2008As of 9:21 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 7250* 1 WeeksNone Reported
View Distributors
   
ADS7846NAs of 9:21 AM GMT, 15 Oct 2008As of 9:21 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 7 Jan 12 Weeks AmericasDigiKey 317
  Mouser Electronics 540
  Newark 180
  AsiaWPI 64
  EuropeAbacus Polar 4
  Arrow Southern Europe 20
  EBV Elektronik 1
ADS7846N/2K5As of 9:21 AM GMT, 15 Oct 2008As of 9:21 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 7 Jan 12 Weeks AmericasRochester Electronics >1k
ADS7846N/2K5G4As of 9:21 AM GMT, 15 Oct 2008As of 9:21 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 7 Jan 12 Weeks None Reported
View Distributors
   
ADS7846NG4As of 9:21 AM GMT, 15 Oct 2008As of 9:21 AM GMT, 15 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 7 Jan 12 Weeks AmericasAvnet >1k
  EuropeFarnell 24
View all Distributors  

* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** 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
ADS7846E RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7846E/2K5 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7846E/2K5G4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7846EG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7846IGQCR  TBD SNPB Level-2A-235C-4 WKSViewView
ADS7846IRGVR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7846IRGVRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7846IRGVT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7846IRGVTG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7846N RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
ADS7846N/2K5 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7846N/2K5G4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
ADS7846NG4 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

Datasheets

  • Touch-Screen Controller (Rev. H) (ads7846.pdf, 910 KB)
    27 Jan 2005 Download

Application Notes

  • A Glossary of Analog-to-Digital Specifications and Performance Characteristics (Rev. A) (sbaa147a.htm, 8 KB)
    12 Jan 2008 Abstract
  • Using a touch-screen controller’s auxiliary inputs (slyt283.pdf, 149 KB)
    12 Oct 2007 Download
  • Q4 2007 Issue Analog Applications Journal  (slyt282.pdf, 325 KB)
    12 Oct 2007 Download
  • Reducing Analog Input Noise in Touch Screen Systems (Rev. A) (sbaa155a.htm, 8 KB)
    15 Sep 2007 Abstract
  • Calibration in touch-screen systems (slyt277.pdf, 169 KB)
    10 Aug 2007 Download
  • Set Up and Use TSC Timings (slaa362.htm, 8 KB)
    07 Jun 2007 Abstract
  • Operation Schemes of Touch Screen Controllers (slaa359.htm, 8 KB)
    21 May 2007 Abstract
  • Apply TI TSC for Various and Multiple Functions (slaa339.htm, 8 KB)
    11 Dec 2006 Abstract
  • Shelf-Life Evaluation of Lead-Free Component Finishes (szza046.htm, 8 KB)
    24 May 2004 Abstract
  • Using the ADS7846 Touch Screen Ctrl. with the Intel SA-1110 StrongArm Processor (sbaa070.htm, 8 KB)
    19 Sep 2001 Abstract
  • Thermal and Electrical Properties of Selected Packaging Materials (sbfa010.htm, 8 KB)
    04 Oct 2000 Abstract
  • Analog-to-Digital Converter Grounding Practices Affect System Performance (sbaa052.htm, 8 KB)
    02 Oct 2000 Abstract
  • Principles of Data Acquisition and Conversion (sbaa051.htm, 8 KB)
    02 Oct 2000 Abstract
  • Interleaving Analog-to-Digital Converters (sbaa049.htm, 8 KB)
    02 Oct 2000 Abstract
  • What Designers Should Know About Data Converter Drift (sbaa046.htm, 8 KB)
    02 Oct 2000 Abstract
  • High Speed Data Conversion (sbaa045.htm, 8 KB)
    02 Oct 2000 Abstract
  • Evaluating the ADS7846E: Using the DEM-ADS7843E/45E Evaluation Fixture  (sbaa037.htm, 8 KB)
    27 Sep 2000 Abstract
  • Touch Screen Controller Tips  (sbaa036.htm, 8 KB)
    27 Sep 2000 Abstract

User Guides

  • DEM-ADS7846 Touchscreen Controller Evaluation Fixture (sbau067.pdf, 100 KB)
    02 May 2001 Download
  • DEM-CIB Evaluation Fixture Computer Interface Board (sbau039.pdf, 82 KB)
    13 Feb 2001 Download
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