Datasheet Texas Instruments ADS7845EG4 — 数据表
| 制造商 | Texas Instruments |
| 系列 | ADS7845 |
| 零件号 | ADS7845EG4 |
5线触摸屏控制器16-SSOP -40至85
数据表
价格
状态
| Lifecycle Status | Active (Recommended for new designs) |
| Manufacture's Sample Availability | Yes |
打包
| Pin | 16 | 16 |
| Package Type | DBQ | DBQ |
| Industry STD Term | SSOP | SSOP |
| JEDEC Code | R-PDSO-G | R-PDSO-G |
| Package QTY | 75 | 75 |
| Carrier | TUBE | TUBE |
| 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 | 下载 | 下载 |
参数化
| 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 |
生态计划
| RoHS | Compliant |
设计套件和评估模块
- 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)
应用须知
- Using a touch-screen controller’s auxiliary inputsPDF, 149 Kb, 档案已发布: Oct 12, 2007
- Touch Screen Controller TipsPDF, 86 Kb, 档案已发布: 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. - PCB Layout Guideline for TI Resistive TSC DevicesPDF, 144 Kb, 档案已发布: Oct 4, 2012
- Operation Schemes of Touch Screen ControllersPDF, 846 Kb, 档案已发布: May 21, 2007
- Calibration in touch-screen systemsPDF, 169 Kb, 档案已发布: Aug 10, 2007
- Reducing Analog Input Noise in Touch Screen Systems (Rev. A)PDF, 535 Kb, 修订版: A, 档案已发布: 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 - Q4 2007 Issue Analog Applications Journal (Rev. A)PDF, 316 Kb, 修订版: A, 档案已发布: Nov 14, 2007
- Apply TI TSC for Various and Multiple FunctionsPDF, 316 Kb, 档案已发布: 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 - Analog-to-Digital Converter Grounding Practices Affect System Performance (Rev. A)PDF, 69 Kb, 修订版: A, 档案已发布: May 18, 2015
- A Glossary of Analog-to-Digital Specifications and Performance Characteristics (Rev. B)PDF, 425 Kb, 修订版: B, 档案已发布: Oct 9, 2011
This glossary is a collection of the definitions of Texas Instruments' Delta-Sigma (О”ОЈ), 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. - Principles of Data Acquisition and Conversion (Rev. A)PDF, 132 Kb, 修订版: A, 档案已发布: Apr 16, 2015
模型线
系列: ADS7845 (4)
- ADS7845E ADS7845E/2K5 ADS7845E/2K5G4 ADS7845EG4
制造商分类
- Semiconductors > Data Converters > Integrated/Special Function Data Converters > Touch Screen Controllers