Datasheet Texas Instruments ADS7845E/2K5
| Manufacturer | Texas Instruments |
| Series | ADS7845 |
| Part Number | ADS7845E/2K5 |
5-wire Touch Screen Controller 16-SSOP -40 to 85
Datasheets
Touch Screen Controller datasheet
PDF, 318 Kb, File published: Sep 27, 2000
Extract from the document
Prices
Status
| Lifecycle Status | Active (Recommended for new designs) |
| Manufacture's Sample Availability | No |
Packaging
| Pin | 16 | 16 |
| Package Type | DBQ | DBQ |
| Industry STD Term | SSOP | SSOP |
| JEDEC Code | R-PDSO-G | R-PDSO-G |
| Package QTY | 2500 | 2500 |
| Carrier | LARGE T&R | LARGE T&R |
| Device Marking | 7845E | ADS |
| Width (mm) | 3.9 | 3.9 |
| Length (mm) | 4.9 | 4.9 |
| Thickness (mm) | 1.5 | 1.5 |
| Pitch (mm) | .64 | .64 |
| Max Height (mm) | 1.75 | 1.75 |
| Mechanical Data | Download | Download |
Parametrics
| Control Interface | SPI |
| Input Type | Differential,Single-Ended |
| Operating Temperature Range | -40 to 85 C |
| Package Group | SSOP |
| Package Size: mm2:W x L | 16SSOP: 19 mm2: 3.9 x 4.9(SSOP) PKG |
| Rating | Catalog |
| SAR ADC Resolution | 12 Bits |
| SAR Sample Rate(Max) | 125 kSPS |
| Supply Voltage (Analog) | 2.7 Max |
| Supply Voltage (I/O VDD) | 2.7 Max |
| Touch Panel | 5-Wire |
| Vref | Ext Int/Ext |
Eco Plan
| RoHS | Compliant |
Design Kits & Evaluation Modules
- Evaluation Modules & Boards: ADS7845EVM
ADS7845EVM Evaluation Module
Lifecycle Status: Active (Recommended for new designs) - Evaluation Modules & Boards: ADS7845EVM-PDK
ADS7845EVM-PDK Evaluation Module
Lifecycle Status: Active (Recommended for new designs)
Application Notes
- Analog-to-Digital Converter Grounding Practices Affect System Performance (Rev. A)PDF, 69 Kb, Revision: A, File published: May 18, 2015
- Q4 2007 Issue Analog Applications Journal (Rev. A)PDF, 316 Kb, Revision: A, File published: Nov 14, 2007
- A Glossary of Analog-to-Digital Specifications and Performance Characteristics (Rev. B)PDF, 425 Kb, Revision: B, File published: Oct 9, 2011
This glossary is a collection of the definitions of Texas Instruments' Delta-Sigma (ΔΣ), successive approximation register (SAR), and pipeline analog-to-digital (A/D) converter specifications and performance characteristics. Although there is a considerable amount of detail in this document, the product data sheet for a particular product specification is the best and final reference. - Using a touch-screen controller’s auxiliary inputsPDF, 149 Kb, File published: Oct 12, 2007
- Touch Screen Controller TipsPDF, 86 Kb, File published: Sep 27, 2000
The ADS7843, ADS7845, and the new ADS7846 converters all are designed for specific touch screen applications. Applications using these devices can benefit greatly from the tips presented in this application bulletin. Most of the examples discuss the ADS7843, but the techniques shown are applicable to all of the devices. - Calibration in touch-screen systemsPDF, 169 Kb, File published: Aug 10, 2007
- Operation Schemes of Touch Screen ControllersPDF, 846 Kb, File published: May 21, 2007
- Apply TI TSC for Various and Multiple FunctionsPDF, 316 Kb, File published: Dec 11, 2006
This application report presents several examples showing how a touch screen controller (TSC) from Texas Instruments provides a variety of functions such as graphs, scroll bars, pressure buttons, and analog dials. A simple resistive TSC can be used to achieve all of these functions as long as they are not activated simultaneously. This application report demonstrates a few simple examples how th - Reducing Analog Input Noise in Touch Screen Systems (Rev. A)PDF, 535 Kb, Revision: A, File published: Sep 15, 2007
This application report discusses some common methods for reducing noise in the analog input circuitry of a resistive touch screen controller. In terms of hardware design, PCB layout and grounding are critical; the additional noise-decoupling capacitor built into a touch screen controller input pin may also help. On the software side, several simple, widely-applied filtering algorithms are present - PCB Layout Guideline for TI Resistive TSC DevicesPDF, 144 Kb, File published: Oct 4, 2012
- Principles of Data Acquisition and Conversion (Rev. A)PDF, 132 Kb, Revision: A, File published: Apr 16, 2015
Model Line
Series: ADS7845 (4)
- ADS7845E ADS7845E/2K5 ADS7845E/2K5G4 ADS7845EG4
Manufacturer's Classification
- Semiconductors > Data Converters > Integrated/Special Function Data Converters > Touch Screen Controllers
