TSC2046
- 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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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.
Technical documentation
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | Low Voltage I/O Touch Screen Controller datasheet (Rev. G) | 17 Jan 2008 | |
| Application note | PCB Layout Guideline for TI Resistive TSC Devices | 04 Oct 2012 | ||
| Analog Design Journal | Using a touch-screen controller’s auxiliary inputs | 12 Oct 2007 | ||
| 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 | Apply TI TSC for Various and Multiple Functions | 11 Dec 2006 | ||
| Application note | How to Use TI's 4-Wire TSC to Control an 8-Wire Resistive Touch Screen | 27 Mar 2006 | ||
| Application note | TSC2046 WinCE 5.0 Driver | 10 Nov 2005 | ||
| EVM User's guide | TSC2046EVM/TSC2046EVM-PDK User Guide | 06 Jul 2004 |
Design & development
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| TSSOP (PW) | 16 | Ultra Librarian |
| VQFN (RGV) | 16 | Ultra Librarian |
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