TSC2046

ACTIVE

4-Wire Touch Screen Controller with low voltage digital I/O

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Product details

Parameters

SAR ADC resolution (Bits) 12 Touch panel 4-Wire Control interface SPI Vref (int/ext) Int Rating Catalog Operating temperature range (C) -40 to 85 Input type Single-Ended open-in-new Find other Touch screen controllers

Package | Pins | Size

BGA MICROSTAR JUNIOR (ZQC) 48 16 mm² 4 x 4 TSSOP (PW) 16 22 mm² 4.4 x 5 TSSOP (PW) 16 22 mm² 5 x 4.4 VQFN (RGV) 16 16 mm² 4 x 4 open-in-new Find other Touch screen controllers

Features

  • SAME PINOUT AS ADS7846
  • 2.2V TO 5.25V OPERATION
  • 1.5V TO 5.25V DIGITAL I/O
  • INTERNAL 2.5V REFERENCE
  • DIRECT BATTERY MEASUREMENT (0V TO 6V)
  • ON-CHIP TEMPERATURE MEASUREMENT
  • TOUCH-PRESSURE MEASUREMENT
  • QSPI™ AND SPI™ 3-WIRE INTERFACE
  • AUTO POWER-DOWN
  • AVAILABLE IN TSSOP-16, QFN-16, AND VFBGA-48 PACKAGES
  • APPLICATIONS
    • PERSONAL DIGITAL ASSISTANTS
    • PORTABLE INSTRUMENTS
    • POINT-OF-SALE TERMINALS
    • PAGERS
    • TOUCH SCREEN MONITORS
    • CELLULAR PHONES

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Description

The TSC2046 is a next-generation version to the ADS7846 4-wire touch screen controller which supports a low-voltage I/O interface from 1.5V to 5.25V. The TSC2046 is 100% pin-compatible with the existing ADS7846, and will drop into the same socket. This allows for easy upgrade of current applications to the new version. The TSC2046 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 sample rate), and on-chip drivers make the TSC2046 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 TSC2046 is available in TSSOP-16, QFN-16, and VFBGA-48 packages and is specified over the -40°C to +85°C temperature range.

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Technical documentation

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Type Title Date
* Datasheet Low Voltage I/O Touch Screen Controller datasheet (Rev. G) Jan. 17, 2008
Application notes PCB Layout Guideline for TI Resistive TSC Devices Oct. 04, 2012
Application notes Using a touch-screen controller’s auxiliary inputs Oct. 12, 2007
Application notes Reducing Analog Input Noise in Touch Screen Systems (Rev. A) Sep. 15, 2007
Application notes Calibration in touch-screen systems Aug. 10, 2007
Application notes Operation Schemes of Touch Screen Controllers May 21, 2007
Application notes Apply TI TSC for Various and Multiple Functions Dec. 11, 2006
Application notes How to Use TI's 4-Wire TSC to Control an 8-Wire Resistive Touch Screen Mar. 27, 2006
Application notes TSC2046 WinCE 5.0 Driver Nov. 10, 2005
User guides TSC2046EVM/TSC2046EVM-PDK User Guide Jul. 06, 2004

Design & development

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CAD/CAE symbols

Package Pins Download
BGA MICROSTAR JUNIOR (ZQC) 48 View options
TSSOP (PW) 16 View options
VQFN (RGV) 16 View options

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