Datasheet Texas Instruments ADS7843-Q1
| Manufacturer | Texas Instruments |
| Series | ADS7843-Q1 |
Automotive 4-wire Touch Screen Controller
Datasheets
ADS7843-Q1 Touch Screen Controller datasheet
PDF, 2.0 Mb, Revision: A, File published: Aug 1, 2012
Extract from the document
Status
| ADS7843IDBQRQ1 | |
|---|---|
| Lifecycle Status | Active (Recommended for new designs) |
| Manufacture's Sample Availability | Yes |
Packaging
| ADS7843IDBQRQ1 | |
|---|---|
| N | 1 |
| Pin | 16 |
| Package Type | DBQ |
| Industry STD Term | SSOP |
| JEDEC Code | R-PDSO-G |
| Package QTY | 2500 |
| Carrier | LARGE T&R |
| Device Marking | S7843Q |
| Width (mm) | 3.9 |
| Length (mm) | 4.9 |
| Thickness (mm) | 1.5 |
| Pitch (mm) | .64 |
| Max Height (mm) | 1.75 |
| Mechanical Data | Download |
Parametrics
| Parameters / Models | ADS7843IDBQRQ1 |
|---|---|
| Control Interface | SPI |
| Input Type | Single-Ended |
| Operating Temperature Range, C | -40 to 125 |
| Package Group | SSOP |
| Package Size: mm2:W x L, PKG | 16SSOP: 19 mm2: 3.9 x 4.9(SSOP) |
| Rating | Automotive |
| SAR ADC Resolution, Bits | 12 |
| SAR Sample Rate(Max), kSPS | 125 |
| Supply Voltage (Analog), Max | 2.7 |
| Supply Voltage (I/O VDD), Min | 3.6 |
| Touch Panel | 4-Wire |
| Vref, Int/Ext | Int |
Eco Plan
| ADS7843IDBQRQ1 | |
|---|---|
| RoHS | Compliant |
Application Notes
- Calibration in touch-screen systemsPDF, 169 Kb, File published: Aug 10, 2007
- 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 - Analog-to-Digital Converter Grounding Practices Affect System Performance (Rev. A)PDF, 69 Kb, Revision: A, File published: May 18, 2015
- 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 (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, Revision: A, File published: Apr 16, 2015
Model Line
Series: ADS7843-Q1 (1)
Manufacturer's Classification
- Semiconductors> Data Converters> Integrated/Special Function Data Converters> Touch Screen Controllers