Overview
The AD7147PACPZ-RL, produced by Analog Devices Inc., is a high-performance capacitance-to-digital converter (CDC) designed for touch sensing applications. This device is part of the CapTouch™ family and is optimized for use with capacitance sensors, enabling functions such as buttons, scroll bars, and wheels. The AD7147 features advanced CapTouch™ technology, which provides reliable and accurate touch sensing even in challenging environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Description |
|---|---|---|---|---|---|
| Supply Voltage (VCC) | 2.6 | - | 3.6 | V | Single supply operation |
| Operating Temperature | -40 | - | 85 | °C | Active temperature range |
| Resolution | - | 16 bits | - | - | High accuracy sensing |
| Sample Rate | - | 250 kHz | - | - | Responsive touch detection |
| Input Channels | - | 13 | - | - | Multiple touch button design |
| Update Rate | 8.73 ms | 9 ms | 9.27 ms | - | 12 conversion stages, decimation = 64 |
| Operating Current (Full Power) | - | 1 mA | - | - | Low operating current |
| Operating Current (Low Power) | - | 21.5 μA | - | - | Low power mode |
| Package Type | - | 24-lead LFCSP | - | - | 4 mm * 4 mm package size |
Key Features
- CapTouch™ Technology: Advanced technology for reliable and accurate touch sensing.
- High Resolution Sensing: 16-bit resolution for nuanced control and high accuracy.
- Multiple Input Channels: 13 input channels for complex input designs and multiple touch buttons.
- Low Power Consumption: Ideal for portable devices with low operating current in full power and low power modes.
- Robust Design: Tolerates wet or dirty environments and is durable for industrial use.
- Flexible Interface: Supports both I2C and SPI serial interfaces for broad microcontroller connectivity.
- Automatic Calibration: On-chip automatic calibration logic to compensate for environmental changes.
- Active Shield Output: Minimizes noise pickup in the sensor.
Applications
- Consumer Electronics: Touch screens, personal music and multimedia players, smart handheld devices.
- Industrial Control Panels: For robust and reliable touch interfaces in industrial environments.
- Portable Devices: User interfaces in portable electronics for extended battery life.
- Healthcare Equipment: Reliable touch sensing in medical devices.
- Gaming Consoles and Digital Still Cameras: Enhanced user interfaces with high accuracy touch sensing.
Q & A
- What is the AD7147PACPZ-RL used for?
The AD7147PACPZ-RL is used for touch sensing applications, enabling functions such as buttons, scroll bars, and wheels. - What is the resolution of the AD7147PACPZ-RL?
The resolution is 16 bits. - How many input channels does the AD7147PACPZ-RL have?
It has 13 input channels. - What are the supported serial interfaces?
The device supports both I2C and SPI serial interfaces. - What is the operating temperature range of the AD7147PACPZ-RL?
The operating temperature range is from -40°C to 85°C. - What is the typical operating current in full power mode?
The typical operating current in full power mode is 1 mA. - Does the AD7147PACPZ-RL have automatic calibration?
Yes, it has on-chip automatic calibration logic to compensate for environmental changes. - What is the package type of the AD7147PACPZ-RL?
The package type is a 24-lead LFCSP with a size of 4 mm * 4 mm. - Is the AD7147PACPZ-RL suitable for industrial environments?
Yes, it is durable and designed for use in industrial environments. - What are some common applications of the AD7147PACPZ-RL?
Common applications include consumer electronics, industrial control panels, portable devices, and healthcare equipment.
