Overview
The AD5254BRU100, produced by Analog Devices Inc., is a quad-channel, I2C, nonvolatile memory, digitally controlled potentiometer. This device is designed to perform the same electronic adjustment functions as mechanical potentiometers, trimmers, and variable resistors. It features 256 positions and is available in a 20-TSSOP package. The AD5254BRU100 operates over an extended industrial temperature range of –40°C to +105°C, making it suitable for a wide range of applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | |
| Number of Taps | 256 | |
| Resistance | 100 kΩ | Ω |
| Supply Voltage Range | 2.7 V to 5.5 V, ±2.25 V to ±2.75 V | V |
| Operating Temperature Range | –40°C to +105°C | °C |
| Package Type | 20-TSSOP | |
| Memory Type | Non-Volatile | |
| Interface | I2C | |
| Temperature Coefficient | 650 ppm/°C | ppm/°C |
| Wiper Resistance | 200 Ω (typical) | Ω |
Key Features
- Nonvolatile Memory: Stores settings in EEMEM, allowing automatic restoration at power-on.
- I2C Interface: Enables communication with host controllers for setting and reading wiper positions.
- Increment/Decrement and Step Change: Allows for stepwise linear adjustments and ±6 dB step changes for nonlinear adjustments.
- Resistance Tolerance Storing: Patented function to store absolute end-to-end resistance values for precision applications.
- Selectable Address: Supports multiple devices on the same I2C bus.
- Extended Industrial Temperature Range: Operates from –40°C to +105°C.
Applications
- AUDIO CONTROL: Suitable for audio volume control due to its ability to perform nonlinear adjustments.
- LED BRIGHTNESS CONTROL: Ideal for controlling white LED brightness with steep-slope adjustments.
- INDUSTRIAL CONTROL SYSTEMS: Used in various industrial applications requiring precise and stable resistance adjustments.
- AUTOMATION AND ROBOTICS: Useful in robotic and automated systems where dynamic resistance adjustments are necessary.
Q & A
- What is the primary function of the AD5254BRU100?
The AD5254BRU100 is a digitally controlled potentiometer that performs electronic adjustment functions similar to mechanical potentiometers, trimmers, and variable resistors.
- How many channels and taps does the AD5254BRU100 have?
The AD5254BRU100 has 4 channels with 256 taps each.
- What is the operating temperature range of the AD5254BRU100?
The device operates over an extended industrial temperature range of –40°C to +105°C.
- What type of interface does the AD5254BRU100 use?
The AD5254BRU100 uses an I2C interface for communication with host controllers.
- What is the typical wiper resistance of the AD5254BRU100?
The typical wiper resistance is 200 Ω.
- Does the AD5254BRU100 have nonvolatile memory?
- What are some common applications of the AD5254BRU100?
- What is the package type of the AD5254BRU100?
The device is packaged in a 20-TSSOP.
- What is the temperature coefficient of the AD5254BRU100?
The temperature coefficient is 650 ppm/°C.
- Can the AD5254BRU100 perform nonlinear adjustments?
