4-Wire Touch Screen Controller with low voltage digital I/O and extended ESD protection
Product details
Parameters
Package | Pins | Size
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.
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.
Similar but not functionally equivalent to the compared device:
Technical documentation
| 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
For additional terms or required resources, click any title below to view the detail page where available.Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| TSSOP (PW) | 16 | View options |
| VQFN (RGV) | 16 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.