Overview
The AD5254BRU10, produced by Analog Devices Inc., is a quad-channel, I2C, nonvolatile memory digital potentiometer. This device offers 256-position resolution, making it a versatile component for various electronic adjustment applications. It functions similarly to mechanical potentiometers, trimmers, and variable resistors but with the added benefits of digital control and nonvolatile memory. The AD5254 is available in TSSOP-20 packages and supports a range of resistance values including 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 256 positions | - |
| Resistance Values | 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ | Ω |
| Supply Voltage Range | 2.7 V to 5.5 V | V |
| Operating Temperature Range | -40°C to +105°C | °C |
| Package Type | TSSOP-20 | - |
| Interface | I2C | - |
| Input Logic High | 2.1 V to 2.4 V | V |
| Positive Supply Current | 5 µA to 15 µA | µA |
| Full-Scale Error | -3 to 1 LSB | LSB |
| Zero-Scale Error | 0 to 3 LSB | LSB |
Key Features
- Quad Channel Operation: The AD5254 offers four independent digital potentiometer channels, each with 256-position resolution.
- Nonvolatile Memory: Settings are stored in nonvolatile memory, ensuring that the wiper positions are retained even when power is turned off.
- I2C Interface: The device supports a 2-wire I2C interface for easy communication with the host controller.
- Increment/Decrement and Step Change Functions: Allows for stepwise linear adjustments and ±6 dB step changes, useful for applications like audio volume control and LED brightness adjustment.
- Resistance Tolerance Storing Function: Enables access to the absolute end-to-end resistance values of the RDACs for precision applications.
- Extended Industrial Temperature Range: Guaranteed to operate over the -40°C to +105°C temperature range.
Applications
- Audio Volume Control: The AD5254 is suitable for audio applications requiring precise volume control with nonlinear adjustments.
- LED Brightness Control: Ideal for adjusting the brightness of white LEDs in various lighting applications.
- Industrial Automation: Used in industrial control systems where precise and reliable adjustment of resistance values is necessary.
- Medical Devices: Can be used in medical equipment that requires precise and stable resistance adjustments.
- Consumer Electronics: Suitable for use in consumer electronics such as audio equipment, gaming consoles, and other devices requiring digital potentiometer functionality.
Q & A
- What is the resolution of the AD5254 digital potentiometer?
The AD5254 has a resolution of 256 positions.
- What are the available resistance values for the AD5254?
The AD5254 is available with resistance values of 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the operating temperature range of the AD5254?
The AD5254 operates over the -40°C to +105°C temperature range.
- What interface does the AD5254 use for communication?
The AD5254 uses a 2-wire I2C interface for communication with the host controller.
- Does the AD5254 retain its settings when power is turned off?
Yes, the AD5254 stores its settings in nonvolatile memory, ensuring that the wiper positions are retained even when power is turned off.
- What are the typical applications of the AD5254?
The AD5254 is typically used in audio volume control, LED brightness control, industrial automation, medical devices, and consumer electronics.
- What is the package type of the AD5254?
The AD5254 is available in TSSOP-20 packages.
- What is the supply voltage range for the AD5254?
The supply voltage range for the AD5254 is 2.7 V to 5.5 V.
- Does the AD5254 support increment and decrement functions?
Yes, the AD5254 supports increment, decrement, and ±6 dB step change functions for precise adjustments.
- How does the AD5254 store resistance tolerance values?
The AD5254 has a patented resistance-tolerance storing function that allows access to the absolute end-to-end resistance values of the RDACs for precision applications.
