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TSC2046E

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

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Data sheet

TSC2046E

ACTIVE
Data sheet Order now

Product details

SAR ADC resolution (bps) 12 SAR sample rate (max) (ksps) 125 Touch panel 4-Wire Control interface SPI Vref (int/ext) Internal Rating Catalog Operating temperature range (°C) -40 to 85 Analog supply (min) (V) 2.2 Analog supply voltage (max) (V) 5.25 I/O supply voltage (min) (V) 1.5 I/O supply voltage (max) (V) 5.25 Input type Single-ended
SAR ADC resolution (bps) 12 SAR sample rate (max) (ksps) 125 Touch panel 4-Wire Control interface SPI Vref (int/ext) Internal Rating Catalog Operating temperature range (°C) -40 to 85 Analog supply (min) (V) 2.2 Analog supply voltage (max) (V) 5.25 I/O supply voltage (min) (V) 1.5 I/O supply voltage (max) (V) 5.25 Input type Single-ended
TSSOP (PW) 16 32 mm² 5 x 6.4 VQFN (RGV) 16 16 mm² 4 x 4
  • 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.
  • 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.

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.

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

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

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