Overview
The AD7873ARU-REEL7 is a 12-bit successive approximation analog-to-digital converter (ADC) designed by Analog Devices Inc. This component is specifically tailored for touch screen applications, providing a robust interface for converting physical touch or gestures on the screen into electrical signals. It operates as an intermediary between touch sensors and the device's controller, such as a PC or embedded system. The AD7873ARU-REEL7 is known for its high accuracy, low power consumption, and compact packaging, making it suitable for a wide range of touch-sensitive devices.
Key Specifications
| Product Attribute | Attribute Value |
|---|---|
| Manufacturer | Analog Devices, Inc. |
| Voltage Reference | External, Internal |
| Voltage - Supply | 2.2V ~ 5.25V |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) |
| Resolution (Bits) | 12 b |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHs Status | Lead free / RoHS Compliant |
Key Features
- 4-wire Touch Screen Interface: Supports standard 4-wire resistive touch screens.
- On-chip Temperature Sensor: Measures temperature from -40°C to +85°C.
- On-chip 2.5 V Reference: Can be used for auxiliary input, battery monitor, and temperature measurement.
- Low Power Consumption: Shutdown mode reduces current consumption to less than 1 µA.
- High Throughput Rate: Up to 125 kSPS with a 2 MHz clock.
- Direct Battery Measurement: Capable of measuring battery voltage directly.
- Touch Pressure Measurement: Measures the pressure applied to the touch screen.
- Compact Packaging: Available in 16-lead QSOP, TSSOP, and LFCSP packages.
Applications
- Smartphones and Tablets: Enhances touch screen functionality in mobile devices.
- Interactive Kiosks: Used in public interactive systems for user input.
- ATMs and Point-of-Sale (POS) Terminals: Provides reliable touch screen interface for financial transactions.
- Automotive Infotainment Systems: Supports touch screen controls in vehicle entertainment systems.
- Gaming Consoles: Used in gaming consoles for touch-sensitive controls.
- Medical Devices: Applied in medical equipment requiring precise touch input.
- Industrial Control Panels: Used in industrial settings for touch screen interfaces.
- Wearable Devices: Suitable for touch screen controls in wearable technology.
- Home Automation Systems: Enhances user interface in home automation devices.
Q & A
- What is the primary function of the AD7873ARU-REEL7?
The AD7873ARU-REEL7 is a 12-bit successive approximation ADC designed to convert physical touch or gestures on a touch screen into electrical signals that can be processed by a device's software.
- What is the voltage supply range for the AD7873ARU-REEL7?
The AD7873ARU-REEL7 operates from a single 2.2 V to 5.25 V supply.
- What types of packages are available for the AD7873ARU-REEL7?
The component is available in 16-lead QSOP, TSSOP, and LFCSP packages.
- What is the resolution of the AD7873ARU-REEL7?
The resolution of the AD7873ARU-REEL7 is 12 bits.
- What is the operating temperature range for the AD7873ARU-REEL7?
The operating temperature range is -40°C to +85°C.
- Does the AD7873ARU-REEL7 have an on-chip temperature sensor?
Yes, the AD7873ARU-REEL7 includes an on-chip temperature sensor.
- What is the throughput rate of the AD7873ARU-REEL7?
The throughput rate is up to 125 kSPS with a 2 MHz clock.
- Is the AD7873ARU-REEL7 RoHS compliant?
Yes, the AD7873ARU-REEL7 is lead free and RoHS compliant.
- What are some common applications of the AD7873ARU-REEL7?
Common applications include smartphones, tablets, interactive kiosks, ATMs, POS terminals, automotive infotainment systems, gaming consoles, medical devices, industrial control panels, wearable devices, and home automation systems.
- Does the AD7873ARU-REEL7 support external reference voltage?
Yes, the AD7873ARU-REEL7 can use an external reference voltage that can be varied from 1 V to VCC.
