Overview
The AD8403ARU10, manufactured by Analog Devices Inc., is a quad-channel digital potentiometer. This device is part of the AD8400/AD8402/AD8403 series, which provides single-, dual-, or quad-channel, 256-position digitally controlled variable resistors. The AD8403 specifically contains four independent variable resistors, making it an ideal replacement for mechanical potentiometers or variable resistors in various applications. It is available in 24-lead PDIP, SOIC, and TSSOP packages, ensuring versatility in design and implementation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | |
| Number of Taps | 256 | |
| Resistance Options | 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ | |
| Package Type | 24-Lead TSSOP | |
| Voltage Supply | 2.7 V to 5.5 V | V |
| Interface | 3-Wire SPI-Compatible Serial Data Input | |
| Update Data Loading Rate | 10 MHz | |
| Operating Temperature | -40°C to +125°C | °C |
| Power Shutdown Current | < 5 μA | μA |
| Resistance Tolerance | ±1% (channel-to-channel matching) | % |
| Temperature Coefficient | 500 ppm/°C | ppm/°C |
| Wiper Resistance | 200 Ω (typical at VDD = 5V) | Ω |
Key Features
- Quad-channel digital potentiometer with 256 positions per channel.
- Available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ resistance options.
- 3-Wire SPI-compatible serial data input for easy control.
- High update data loading rate of 10 MHz.
- Single-supply operation from 2.7 V to 5.5 V.
- Low power shutdown current of less than 5 μA.
- Operating temperature range from -40°C to +125°C, making it suitable for industrial and automotive applications.
- Cascade pin for daisy-chaining multiple devices.
- Linear taper configuration.
Applications
- Mechanical potentiometer replacement.
- Programmable filters, delays, and time constants.
- Volume control and panning in audio systems.
- Line impedance matching.
- Power supply adjustment.
- Automotive applications due to its extended temperature range and reliability.
Q & A
- What is the AD8403ARU10 used for?
The AD8403ARU10 is used as a quad-channel digital potentiometer, replacing mechanical potentiometers or variable resistors in various applications.
- What are the available resistance options for the AD8403ARU10?
The AD8403ARU10 is available in 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ resistance options.
- What is the interface type of the AD8403ARU10?
The AD8403ARU10 uses a 3-Wire SPI-compatible serial data input interface.
- What is the operating temperature range of the AD8403ARU10?
The operating temperature range is from -40°C to +125°C.
- How many positions does each channel of the AD8403ARU10 have?
Each channel has 256 positions.
- What is the typical wiper resistance of the AD8403ARU10?
The typical wiper resistance is 200 Ω at VDD = 5V.
- What is the power shutdown current of the AD8403ARU10?
The power shutdown current is less than 5 μA.
- Is the AD8403ARU10 suitable for automotive applications?
- What is the update data loading rate of the AD8403ARU10?
The update data loading rate is 10 MHz.
- What are the package types available for the AD8403ARU10?
The AD8403ARU10 is available in 24-lead PDIP, SOIC, and TSSOP packages.
