Datasheet Texas Instruments ADS7845EG4

ManufacturerTexas Instruments
SeriesADS7845
Part NumberADS7845EG4
Datasheet Texas Instruments ADS7845EG4

5-wire Touch Screen Controller 16-SSOP -40 to 85

Datasheets

Touch Screen Controller datasheet
PDF, 318 Kb, File published: Sep 27, 2000
Extract from the document

Prices

Status

Lifecycle StatusActive (Recommended for new designs)
Manufacture's Sample AvailabilityYes

Packaging

Pin1616
Package TypeDBQDBQ
Industry STD TermSSOPSSOP
JEDEC CodeR-PDSO-GR-PDSO-G
Package QTY7575
CarrierTUBETUBE
Device Marking7845EADS
Width (mm)3.93.9
Length (mm)4.94.9
Thickness (mm)1.51.5
Pitch (mm).64.64
Max Height (mm)1.751.75
Mechanical DataDownloadDownload

Parametrics

Control InterfaceSPI
Input TypeDifferential,Single-Ended
Operating Temperature Range-40 to 85 C
Package GroupSSOP
Package Size: mm2:W x L16SSOP: 19 mm2: 3.9 x 4.9(SSOP) PKG
RatingCatalog
SAR ADC Resolution12 Bits
SAR Sample Rate(Max)125 kSPS
Supply Voltage (Analog)2.7 Max
Supply Voltage (I/O VDD)2.7 Max
Touch Panel5-Wire
VrefExt Int/Ext

Eco Plan

RoHSCompliant

Design Kits & Evaluation Modules

  • Evaluation Modules & Boards: ADS7845EVM
    ADS7845EVM Evaluation Module
    Lifecycle Status: Active (Recommended for new designs)
  • Evaluation Modules & Boards: ADS7845EVM-PDK
    ADS7845EVM-PDK Evaluation Module
    Lifecycle Status: Active (Recommended for new designs)

Application Notes

  • Using a touch-screen controller’s auxiliary inputs
    PDF, 149 Kb, File published: Oct 12, 2007
  • Touch Screen Controller Tips
    PDF, 86 Kb, File published: Sep 27, 2000
    The ADS7843, ADS7845, and the new ADS7846 converters all are designed for specific touch screen applications. Applications using these devices can benefit greatly from the tips presented in this application bulletin. Most of the examples discuss the ADS7843, but the techniques shown are applicable to all of the devices.
  • PCB Layout Guideline for TI Resistive TSC Devices
    PDF, 144 Kb, File published: Oct 4, 2012
  • Operation Schemes of Touch Screen Controllers
    PDF, 846 Kb, File published: May 21, 2007
  • Calibration in touch-screen systems
    PDF, 169 Kb, File published: Aug 10, 2007
  • Reducing Analog Input Noise in Touch Screen Systems (Rev. A)
    PDF, 535 Kb, Revision: A, File published: Sep 15, 2007
    This application report discusses some common methods for reducing noise in the analog input circuitry of a resistive touch screen controller. In terms of hardware design, PCB layout and grounding are critical; the additional noise-decoupling capacitor built into a touch screen controller input pin may also help. On the software side, several simple, widely-applied filtering algorithms are present
  • Q4 2007 Issue Analog Applications Journal (Rev. A)
    PDF, 316 Kb, Revision: A, File published: Nov 14, 2007
  • Apply TI TSC for Various and Multiple Functions
    PDF, 316 Kb, File published: Dec 11, 2006
    This application report presents several examples showing how a touch screen controller (TSC) from Texas Instruments provides a variety of functions such as graphs, scroll bars, pressure buttons, and analog dials. A simple resistive TSC can be used to achieve all of these functions as long as they are not activated simultaneously. This application report demonstrates a few simple examples how th
  • Analog-to-Digital Converter Grounding Practices Affect System Performance (Rev. A)
    PDF, 69 Kb, Revision: A, File published: May 18, 2015
  • A Glossary of Analog-to-Digital Specifications and Performance Characteristics (Rev. B)
    PDF, 425 Kb, Revision: B, File published: Oct 9, 2011
    This glossary is a collection of the definitions of Texas Instruments' Delta-Sigma (О”ОЈ), successive approximation register (SAR), and pipeline analog-to-digital (A/D) converter specifications and performance characteristics. Although there is a considerable amount of detail in this document, the product data sheet for a particular product specification is the best and final reference.
  • Principles of Data Acquisition and Conversion (Rev. A)
    PDF, 132 Kb, Revision: A, File published: Apr 16, 2015

Model Line

Manufacturer's Classification

  • Semiconductors > Data Converters > Integrated/Special Function Data Converters > Touch Screen Controllers