AD5222BRUZ100

Digital Potentiometers Overview

The AD5222BRUZ100 is a dual-channel, 128-position digital potentiometer from Analog Devices. It features two independent variable resistors with a nominal end-to-end resistance of 100 kΩ and a temperature coefficient of -35 ppm/°C. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V or a dual supply configuration. It utilizes an Increment/Decrement interface controlled by Chip Select (CS), Clock (CLK), and Up/Down (U/D) inputs, eliminating the need for microcontrollers in push-button applications. The component is housed in a 14-lead Thin Shrink Small Outline Package (TSSOP).

Digital Potentiometers Feature Summary

• Dual-channel architecture with 128 tap positions per channel.
• Nominal resistance of 100 kΩ with ±30% tolerance.
• Increment/Decrement control interface compatible with mechanical switches.
• Operates within an extended industrial temperature range of -40°C to +85°C.

Digital Potentiometers Applications

• Stereo channel audio level control.
• Mechanical potentiometer replacement in instrumentation.
• Remote incremental adjustment systems.
• Programmable voltage-to-current conversion circuits.

Digital Potentiometers Procurement Notes

Verify the specific package variant during acquisition, as the BRU suffix denotes the TSSOP-14 form factor. Confirm that the design accommodates the volatile memory nature of the device, which resets to a centered position upon power-up. Ensure input logic levels align with the specified 2.7 V to 5.5 V operating range to maintain signal integrity.

Digital Potentiometers Selection Notes

Select this model when a dual-channel solution with high resistance values is required. The 100 kΩ option offers lower bandwidth compared to the 10 kΩ variant; verify frequency response requirements against the datasheet specifications. The Increment/Decrement interface is suitable for simple control schemes, whereas SPI-based alternatives may be preferred for complex microcontroller integration.

Digital Potentiometers Part Context

This component belongs to the AD5222 family of dual digital potentiometers. The 'BR' designation indicates the industrial temperature grade (-40°C to +85°C), while 'RU' specifies the TSSOP-14 package. The '100' suffix confirms the 100 kΩ nominal resistance value. Other variants in the series include different resistance options and SOIC packaging.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same family include the AD5222BR100 (SOIC-14 package) for board space adjustments. For SPI interfaces, consider the AD5203 or AD5206 series. Verify that substitute components support the required 128-position resolution and current handling capabilities.