Description
The ADS7843E/2K5 is a high-precision, low-power 12-bit Analog-to-Digital Converter (ADC) specifically designed for 4-wire resistive touch screen interface applications. It acts as the critical bridge between analog touch panel inputs and a host microcontroller, enabling responsive and accurate touch sensing in modern display systems.
Operating on a 5V supply, this IC integrates an internal voltage reference and a high-speed synchronous serial interface, making it highly compatible with popular processors and controllers. The ADS7843 can detect touch pressure and coordinates with high resolution, ensuring smooth performance for interactive displays. Its low-power architecture includes an internal power-down mode, which is ideal for battery-operated devices and handheld hardware.
Housed in a compact SMD-16 package, this controller is designed for high-density PCB layouts, providing reliable performance in environments such as industrial controls, medical instrumentation, and consumer electronics. The ADS7843E/2K5 is widely recognized for its robustness and ease of integration into complex touch-screen interface designs.
Note: Product images are for reference only. The actual product may vary in appearance or manufacturer marking depending on stock availability. Please refer to the datasheet available in the Attachment section for complete electrical characteristics and application circuits.
Features
- 12-bit successive approximation analog-to-digital converter
- Specifically designed for 4-wire resistive touch screens
- Supports touch pressure and coordinate measurement
- High-speed synchronous serial (SPI compatible) interface
- Wide supply voltage range: 2.7V to 5.25V
- Integrated internal voltage reference
- Low-power consumption with automatic power-down mode
- Compact 16-pin SSOP (SMD) package
- Excellent linearity and low noise performance
Benefits
- Enables precise and responsive touch screen interaction
- Lowers system power consumption in portable applications
- Simplifies hardware design by integrating key conversion features
- Highly compatible with standard serial communication protocols
- Small footprint ideal for compact display devices
- Provides long-term reliability for industrial and consumer use
- Reduces the processing load on the host microcontroller
Applications
- Resistive Touch Screen Panels
- Handheld PDAs and Mobile Devices
- Industrial Human-Machine Interfaces (HMI)
- Medical Diagnostic Equipment Displays
- Point-of-Sale (POS) Terminals
- GPS Navigation Systems
- Digital Camera and Camcorder Controls
- Embedded System Touch Displays
- Educational Electronics and Prototyping
Package Includes
- 1 x ADS7843E/2K5 12-bit 4-Wire Touch Screen Controller IC (SMD-16)
Specifications
| Parameter | Specification |
|---|---|
| Product Name | ADS7843E/2K5 |
| Device Type | Touch Screen Controller / ADC |
| Resolution | 12-bit |
| Interface | Serial (SPI compatible) |
| Operating Voltage | 2.7V to 5.25V |
| Package / Case | SMD-16 |
| Mounting Type | Surface Mount (SMD) |
| Shipping Weight | 0.001 kg |
| Shipping Dimensions | 4 × 4 × 1 cm |
