AD5291BRUZ-20

The AD5291BRUZ-20 is a digital potentiometer manufactured by Analog Devices Inc., which is now part of Maxim Integrated. This device is designed for applications requiring precise resistance adjustment and is particularly useful in various electronic circuits where variable resistance is needed.

Key Features:

1. Digital Potentiometer: The AD5291 is a 256-position, non-volatile digital potentiometer, which means it can be adjusted digitally through a serial interface, allowing for precise control over resistance values.

2. Resistance Value: The device features a total resistance of 20 kΩ, making it suitable for applications that require moderate resistance levels.

3. Non-Volatile Memory: One of the standout features of the AD5291 is its non-volatile memory, which allows it to retain its settings even when power is removed. This is particularly useful in applications where the last set resistance value needs to be preserved.

4. Interface: The AD5291 utilizes a 2-wire I²C-compatible interface for communication, making it easy to integrate into systems that already use I²C for other components.

5. Power Supply: The device operates within a supply voltage range of 2.7V to 5.5V, making it versatile for various low-voltage applications.

6. Low Power Consumption: The AD5291 is designed for low power consumption, which is essential for battery-operated devices and energy-efficient applications.

7. Temperature Range: It operates over a wide temperature range, typically from -40°C to +125°C, ensuring reliability in harsh environments.

8. Package Type: The AD5291BRUZ-20 comes in a compact 20-lead TSSOP (Thin Shrink Small Outline Package), which is suitable for space-constrained applications.

9. Applications: This digital potentiometer is ideal for applications such as audio volume control, sensor calibration, gain adjustment in amplifiers, and other applications requiring programmable resistance.

Performance Characteristics:

• Resolution: The 256 positions provide a resolution of approximately 78.125 ohms per step, allowing for fine adjustments.
• Linearity: The device exhibits good linearity characteristics, ensuring that the resistance changes smoothly with digital input.
• Endurance: The non-volatile memory can endure a significant number of write cycles, making it reliable for repeated adjustments.

Conclusion:

The AD5291BRUZ-20 from Analog Devices Inc. is a highly versatile digital potentiometer that combines precision, non-volatility, and low power consumption, making it an excellent choice for a wide range of electronic applications. Its I²C interface and compact packaging further enhance its usability in modern electronic designs.