Overview
The AD7873ACPZ-REEL7 is a precision touch screen controller designed by Analog Devices Inc. for 4-wire resistive touchscreens. This controller provides accurate measurement and touch pressure detection, making it ideal for applications requiring high touchscreen precision. It features a 12-bit resolution, built-in 2.5V reference voltage, and on-board temperature measurement capability. The device is easily interfaced with microcontrollers via a serial port, enhancing its versatility in various electronic systems.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12-bit |
| Supply Voltage Range | 2V to 5.25V |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | 16-VQFN Exposed Pad, CSP |
| Number of Pins | 16 |
| Sampling Rate | 125 ksps |
| Polarity | Unipolar |
| Interface | Serial |
| Integral Nonlinearity (INL) | 2 LSB |
Key Features
- High resolution enhances touchscreen precision
- Compatible with a wide range of 4-wire resistive touchscreens
- Low voltage operation supports portable and battery-powered devices
- Internal voltage reference reduces external component count
- Extended temperature range suitable for industrial applications
- Single-ended or differential input capability
- Touch pressure measurement and on-board temperature measurement capability
- Robust against ESD events and long operational life span
Applications
- Point-of-sale terminals
- Personal digital assistants
- Portable instrumentation
- Vehicle navigation systems
- Industrial controls
Q & A
- What is the resolution of the AD7873ACPZ-REEL7?
The AD7873ACPZ-REEL7 has a 12-bit resolution. - What is the operating temperature range of the AD7873ACPZ-REEL7?
The operating temperature range is -40°C to 85°C. - What types of touchscreens is the AD7873ACPZ-REEL7 compatible with?
The AD7873ACPZ-REEL7 is compatible with various types of 4-wire resistive touchscreens. - How is the AD7873ACPZ-REEL7 interfaced with microcontrollers?
The AD7873ACPZ-REEL7 is easily interfaced with microcontrollers via a serial port. - What is the sampling rate of the AD7873ACPZ-REEL7?
The sampling rate is 125 ksps. - Is the AD7873ACPZ-REEL7 robust against ESD events?
Yes, the AD7873ACPZ-REEL7 is robust against ESD events. - What is the package type of the AD7873ACPZ-REEL7?
The package type is 16-VQFN Exposed Pad, CSP. - Does the AD7873ACPZ-REEL7 have internal voltage reference?
Yes, it has a built-in 2.5V reference voltage. - What are some of the key applications of the AD7873ACPZ-REEL7?
Key applications include point-of-sale terminals, personal digital assistants, portable instrumentation, vehicle navigation systems, and industrial controls. - Is the AD7873ACPZ-REEL7 compliant with RoHS regulations?
Yes, the AD7873ACPZ-REEL7 is RoHS compliant and lead-free.
