AD5228BUJZ100-RL7

Digital Potentiometers Overview

The AD5228BUJZ100-RL7 is a single-channel, 32-position digital potentiometer manufactured by Analog Devices Inc. It features a 100 kΩ end-to-end terminal resistance with a ±20% tolerance and a temperature coefficient of 35 ppm/°C in rheostat mode. The device operates on a supply voltage range of 2.7 V to 5.5 V, drawing a typical standby current of 0.4 µA. It utilizes a simple manual up/down control interface requiring only two tactile switches, supported by a built-in adaptive debouncer. The component is housed in a compact TSOT-8 package and is rated for an operating temperature range of −40°C to +105°C.

Digital Potentiometers Feature Summary

• 32-step resolution with 100 kΩ nominal resistance
• Manual up/down control via PU/PD pins with adaptive debouncing
• Ultralow power consumption (0.4 µA typical standby)
• Pin-selectable zero-scale or midscale power-on preset

Digital Potentiometers Applications

• Mechanical potentiometer and trimmer replacements
• LCD backlight, contrast, and brightness controls
• Digital volume control
• Portable device-level adjustments
• Programmable power supply

Digital Potentiometers Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing. Confirm the BUJZ designation corresponds to the TSOT-8 package and automotive temperature grade. Ensure the 100 value matches the required 100 kΩ resistance for the target circuit design.

Digital Potentiometers Selection Notes

Select this model for applications requiring manual adjustment without microcontroller interfaces. The 100 kΩ resistance suits moderate impedance circuits. Verify that the 32-step resolution meets the required precision. The low standby current makes it suitable for battery-powered portable devices.

Digital Potentiometers Part Context

This part belongs to the AD5228 family of 32-position digital potentiometers. Variants within the family differ primarily in end-to-end resistance values, such as 10 kΩ and 50 kΩ options. All variants share the same manual control interface, pinout, and general electrical characteristics.

Digital Potentiometers Replacement Considerations

Direct functional substitutes include other AD5228 variants with different resistance values (e.g., AD5228BUJZ10-RL7 for 10 kΩ or AD5228BUJZ50-RL7 for 50 kΩ) if the resistance requirement allows.