TSC2046E

ACTIVE

4-Wire Touch Screen Controller with low voltage digital I/O and extended ESD protection

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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

TSSOP (PW) 16 22 mm² 4.4 x 5 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)
  • OnChip Temperature Measurement
  • Touch-Pressure Measurement
  • QSPi™ and SPI™ 3-Wire Interface
  • Auto Power-Down
  • Exceeds IEC 61000-4-2 ESD Requirements
    • ±15V Contact Discharge
    • No External Components Needed
  • 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

SPI and QSPI are trademarks of Motorola Inc.

Microwire is a trademark of National Semiconductor Corporation.

All other trademarks are the property of their respective owners.

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Description

The TSC2046E is the next-generation version of the ADS7846 4-wire touch screen controller, supporting a low-voltage I/O interface from 1.5V to 5.25V. The TSC2046E is 100% pin-compatible with the existing ADS7846, and drops into the same socket. This design allows for an easy upgrade of current applications to the new version. The TSC2046E 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 a supply voltage of 2.7V, 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 TSC2046E 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 TSC2046E 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

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet Low Voltage I/O Touch Screen Controller datasheet (Rev. B) Jan. 17, 2008
Application note PCB Layout Guideline for TI Resistive TSC Devices Oct. 04, 2012
Application note Reducing Analog Input Noise in Touch Screen Systems (Rev. A) Sep. 15, 2007
Application note Calibration in touch-screen systems Aug. 10, 2007
Application note Operation Schemes of Touch Screen Controllers May 21, 2007
Application note TSC2046 WinCE 5.0 Driver Nov. 10, 2005

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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