AD7879ACBZ-RL

Product Overview

Category

The AD7879ACBZ-RL belongs to the category of integrated circuits (ICs) specifically designed for touch screen applications.

Use

This product is primarily used in touch screen devices, such as smartphones, tablets, and other consumer electronics. It enables accurate and responsive touch input functionality.

Characteristics

• High precision: The AD7879ACBZ-RL offers precise touch sensing capabilities, allowing for accurate tracking of touch inputs.
• Low power consumption: This IC is designed to minimize power consumption, making it suitable for battery-powered devices.
• Fast response time: With its high-speed conversion capabilities, the AD7879ACBZ-RL ensures quick and seamless touch response.
• Robust design: The product is built to withstand harsh environmental conditions, ensuring reliable performance even in challenging situations.

Package

The AD7879ACBZ-RL comes in a compact and industry-standard package, making it easy to integrate into various electronic devices. The package type is BGA (Ball Grid Array).

Essence

The essence of the AD7879ACBZ-RL lies in its ability to accurately detect and interpret touch inputs, providing an intuitive and user-friendly interface for touch screen devices.

Packaging/Quantity

This product is typically sold in reels or tubes, with a standard quantity of 2500 units per reel/tube.

Specifications

• Supply Voltage: 2.6V to 3.6V
• Operating Temperature Range: -40°C to +85°C
• Resolution: Up to 12 bits
• Interface: SPI (Serial Peripheral Interface)
• Touch Screen Controller Type: Capacitive

Detailed Pin Configuration

The AD7879ACBZ-RL has a total of 32 pins. Here is a detailed pin configuration:

1. VDDIO: Power supply for the digital I/O pins
2. VDD: Power supply for the IC
3. GND: Ground connection
4. X1, X2, Y1, Y2: Touch screen analog inputs
5. IRQ: Interrupt request output
6. SCLK: Serial clock input
7. MOSI: Master Out Slave In data input
8. MISO: Master In Slave Out data output
9. CS: Chip select input
10. PENIRQ: Pen interrupt output
11. REF: Reference voltage input 12-19. NC: No connection
12. DGND: Digital ground connection 21-32. NC: No connection

Functional Features

• Multi-touch support: The AD7879ACBZ-RL can handle multiple touch inputs simultaneously, enabling advanced multi-touch gestures.
• Noise filtering: The IC incorporates advanced noise filtering techniques to ensure accurate touch detection even in noisy environments.
• Calibration: The product offers built-in calibration capabilities, allowing for precise touch tracking across different screen sizes and resolutions.
• Low power standby mode: It features a low-power standby mode, reducing power consumption when the touch screen is not in use.

Advantages and Disadvantages

Advantages

• High precision touch sensing
• Fast response time
• Low power consumption
• Robust design for reliable performance

Disadvantages

• Limited availability of alternative models
• Relatively higher cost compared to some other touch screen controllers

Working Principles

The AD7879ACBZ-RL utilizes capacitive touch sensing technology to detect touch inputs. It measures changes in capacitance caused by the presence of a conductive object (such as a finger) on the touch screen surface. These capacitance changes are converted into digital signals that can be interpreted by the device's software.

Detailed Application Field Plans

The AD7879ACBZ-RL is widely used in various touch screen applications, including: - Smartphones and tablets - Industrial control panels - Automotive infotainment systems - Gaming consoles - Medical devices

Detailed and Complete Alternative Models

While the AD7879ACBZ-RL is a highly capable touch screen controller, there are alternative models available in the market that offer similar functionality. Some notable alternatives include: - Atmel AT42QT1010 - Cypress Semiconductor CY8C20466A - Microchip MXT336T

These alternative models provide touch screen control solutions with varying features and specifications, allowing designers to choose the most suitable option for their specific application requirements.

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