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ADS7846 Status: ACTIVE

4-wire Touch Screen Controller


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Datasheet

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 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

  • TSC2046: 4-Wire Touch Screen Controller with low voltage digital I/O
  • ADS7843: 4-wire Touch Screen Controller
  • TSC2003: 4-wire Touch Screen Controller
  • OMAP3530: Applications Processor
  • TL431A: Adjustable Precision Shunt Regulator
  • TLC2543: 12-Bit 66 kSPS ADC Ser. Out, Pgrmable MSB/LSB First, Pgrmable Power Down/Output Data Length, 11 Ch.

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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 852.25 | 1kuSSOP/QSOP (DBQ) | 16 View 75 | 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 852.25 | 1kuSSOP/QSOP (DBQ) | 16 View 75 | 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 852.25 | 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 852.25 | 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

Reported Distributor Inventory as of 12:08 PM GMT, 06 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksADS7846E
AmericasArrow >1k
Newark 716
Rochester Electronics 66
AsiaWPI 92
EuropeArrow Southern Europe 75
WorldwideDigiKey 585
Mouser Electronics 356
TI Lead Time*: 20 WeeksADS7846E/2K5
AmericasRochester Electronics >1k
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksADS7846E/2K5G4
EuropeEBV Elektronik >1k
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksADS7846EG4
AmericasRochester Electronics 30
AsiaFarnell Asia >1k
EuropeEBV Elektronik >1k
Farnell >1k
WorldwideDigiKey 75
Mouser Electronics 129
TI Lead Time*: 20 WeeksADS7846IGQCR
AmericasRochester Electronics >1k
TI Lead Time*: 4 WeeksADS7846IRGVR
WorldwideDigiKey  Available
TI Lead Time*: 4 WeeksADS7846IRGVRG4
WorldwideDigiKey  Available
TI Lead Time*: 1 WeekADS7846IRGVT
AmericasRochester Electronics >1k
AsiaWPI 418
WorldwideDigiKey 201
Mouser Electronics 187
TI Lead Time*: 1 WeekADS7846IRGVTG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksADS7846N
AsiaWPI 28
EuropeAbacus Polar 4
Arrow Southern Europe 20
WorldwideDigiKey 12
TI Lead Time*: 20 WeeksADS7846N/2K5
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksADS7846N/2K5G4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksADS7846NG4
AsiaFarnell Asia 38
EuropeFarnell 35
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
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

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