DS1849B-004

Digital Potentiometers Overview

The DS1849B-004 is a digital potentiometer manufactured by Analog Devices Inc./Maxim Integrated. It features 256 resistive taps and a nominal resistance of 10 kΩ, providing a resolution of approximately 39 Ω per step. The device utilizes an I²C interface for communication and includes non-volatile memory to retain wiper settings. It supports selectable addressing and integrates a temperature sensor. The component is designed for surface mount applications.

Digital Potentiometers Feature Summary

• Integrates a digital potentiometer with 256 resistive taps and a nominal 10 kΩ resistance.
• Includes non-volatile memory to maintain wiper position settings without power.
• Features an I²C serial interface for control and data transfer.
• Incorporates a built-in temperature sensor for environmental monitoring.

Digital Potentiometers Applications

• Audio volume control systems
• Programmable gain amplifier circuits
• Voltage reference adjustment
• Sensor signal conditioning

Digital Potentiometers Procurement Notes

Verify the specific suffix and package type when sourcing. Confirm that the selected variant matches the required nominal resistance and tap count. Ensure compatibility with the target I²C bus speed and voltage levels. Check for availability of non-volatile memory variants if power-down retention is critical.

Digital Potentiometers Selection Notes

Select this component for applications requiring precise, software-adjustable resistance values. Consider the 10 kΩ nominal value and 256-tap resolution for fine control needs. Verify that the I²C interface aligns with the system's microcontroller capabilities. Evaluate the integrated temperature sensor utility for combined sensing and actuation tasks.

Digital Potentiometers Part Context

This part belongs to the Maxim Integrated digital potentiometer family, which combines analog resistance adjustment with digital control. These devices are commonly used in industrial and consumer electronics where manual potentiometers are impractical due to size or reliability constraints.

Digital Potentiometers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official manufacturer resources for cross-reference information.