AD5241BR1M

Digital Potentiometers Overview

The AD5241BR1M is a single-channel, 8-bit digital potentiometer from Analog Devices with a nominal resistance of 1 MΩ. It features 256 tap positions and operates on a single supply voltage ranging from 2.7 V to 5.5 V or dual supplies of ±2.7 V. The device utilizes an I2C-compatible serial interface for programming the wiper position and includes two additional programmable logic outputs (O1, O2). Key electrical specifications include a temperature coefficient of 30 ppm/°C, a maximum wiper resistance of 120 Ω, and an operating temperature range of −40°C to +105°C.

Digital Potentiometers Feature Summary

• Single-channel variable resistor with 256 programmable positions
• I2C-compatible serial interface with readback capability
• Internal power-on midscale preset for fault recovery
• Self-contained shutdown feature with low power consumption

Digital Potentiometers Applications

• Mechanical potentiometer replacement
• Instrumentation gain and offset adjustment
• Programmable voltage-to-current conversion
• Line impedance matching

Digital Potentiometers Procurement Notes

Verify the specific package type associated with the BR1M suffix against the manufacturer's ordering guide, as the datasheet lists SOIC and TSSOP options. Confirm that the 1 MΩ resistance value matches the system requirements, noting that tolerance varies between ±30% and ±50% depending on the resistance value selected.

Digital Potentiometers Selection Notes

Select this component when a single-channel digital control is required for high-resistance applications up to 1 MΩ. Ensure the design accommodates the 120 Ω maximum wiper resistance in zero-scale conditions. Verify that the I2C bus speed does not exceed 400 kHz and that address pins AD0 and AD1 are configured correctly if multiple devices share the bus.

Digital Potentiometers Part Context

The AD5241 is part of the AD5241/AD5242 family of I2C-compatible digital potentiometers. While the AD5242 offers dual channels, the AD5241 provides a single channel in similar packages. The family supports nominal resistances of 10 kΩ, 100 kΩ, and 1 MΩ, sharing identical pinouts and control logic across variants.

Digital Potentiometers Replacement Considerations

Direct functional replacements within the same family include other AD5241 variants with different resistance values or packaging. Cross-family replacements require verification of I2C compatibility, voltage ranges, and pin configurations.