Overview
The ADS7843E/2K5 is a highly integrated, 4-wire resistive touch screen controller produced by Texas Instruments. This product is designed to interface with touch screens, providing accurate and reliable touch position data. It is widely used in applications requiring precise touch input, such as industrial control panels, medical devices, and consumer electronics. The ADS7843E/2K5 stands out for its low power consumption, high accuracy, and ease of integration, making it a competitive choice in the touch screen controller market.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | 2.7 - 5.25 | V | |
| Resolution | 12 | bits | |
| Interface | SPI | Serial Peripheral Interface | |
| Operating Temperature | -40 to +85 | °C | |
| Package | SSOP-16 | ||
| Power Consumption | 750 | µW | Typical |
| Sampling Rate | 125 | kHz | |
| Input Channels | 4 | X+, X-, Y+, Y- | |
| Touch Pressure Measurement | Yes | ||
| ESD Protection | ±4 | kV | Human Body Model |
Key Features
- Low Power Consumption: Ideal for battery-powered devices, ensuring extended operational life.
- High Accuracy: 12-bit resolution provides precise touch position data.
- SPI Interface: Simplifies integration with microcontrollers and other digital systems.
- Touch Pressure Measurement: Allows for additional user interaction capabilities.
- Wide Operating Temperature Range: Suitable for harsh environments, from -40°C to +85°C.
Applications
The ADS7843E/2K5 is widely used in various industries due to its reliable performance and ease of integration. In industrial automation, it is employed in control panels and HMI (Human-Machine Interface) systems. In medical devices, it ensures accurate touch input for diagnostic equipment and patient monitoring systems. Additionally, it is utilized in consumer electronics such as smartphones, tablets, and portable gaming devices, enhancing user interaction with high precision and responsiveness.
Q & A
1. What is the supply voltage range for the ADS7843E/2K5?
The supply voltage range is 2.7V to 5.25V.
2. What is the resolution of the ADS7843E/2K5?
It has a 12-bit resolution.
3. What interface does the ADS7843E/2K5 use?
It uses the SPI (Serial Peripheral Interface) for communication.
4. What is the operating temperature range?
The operating temperature range is -40°C to +85°C.
5. What package does the ADS7843E/2K5 come in?
It comes in an SSOP-16 package.
6. What is the typical power consumption?
The typical power consumption is 750µW.
7. What is the sampling rate of the ADS7843E/2K5?
The sampling rate is 125kHz.
8. How many input channels does it have?
It has 4 input channels: X+, X-, Y+, Y-.
9. Does it support touch pressure measurement?
Yes, it supports touch pressure measurement.
10. What is the ESD protection level?
It provides ±4kV ESD protection (Human Body Model).
