AD5241BRZ100-RL7

Digital Potentiometers Overview

The AD5241BRZ100-RL7 is a single-channel, 8-bit digital potentiometer from Analog Devices. It provides 256 programmable resistance positions with a nominal end-to-end resistance of 100 kΩ and a temperature coefficient of 30 ppm/°C. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V or dual supplies of ±2.7 V. It features an I2C-compatible serial interface for wiper position programming and includes two extra programmable logic outputs (O1, O2). The unit utilizes volatile memory, resetting the wiper to midscale upon power-on.

Digital Potentiometers Feature Summary

• Single-channel 8-bit resolution with 256 tap positions
• Nominal resistance of 100 kΩ with 30 ppm/°C temperature coefficient
• I2C-compatible 2-wire serial interface with readback capability
• Two additional programmable logic outputs (O1, O2) for driving digital loads

Digital Potentiometers Applications

• Mechanical potentiometer replacement in space-constrained designs
• Instrumentation gain and offset adjustment
• Programmable voltage-to-current conversion circuits
• Line impedance matching in communication systems

Digital Potentiometers Procurement Notes

Verify the specific package type against the datasheet, as the BRZ suffix typically indicates a SOIC package while other variants may use TSSOP. Confirm that the system design accounts for the volatile nature of the RDAC register, which requires reprogramming after power cycles. Ensure the I2C bus voltage levels are compatible with the 2.7 V to 5.5 V operating range.

Digital Potentiometers Selection Notes

Select this component when a single-channel variable resistor is required with I2C control. The 100 kΩ value suits applications needing higher impedance than the 10 kΩ variant. Consider the AD5242 if dual-channel operation is necessary, as it shares similar electrical characteristics but offers two independent RDACs. Verify thermal dissipation requirements for the chosen surface-mount package.

Digital Potentiometers Part Context

This part belongs to the AD5241/AD5242 family of I2C-compatible digital potentiometers. The AD5241 denotes the single-channel version, while the AD5242 is the dual-channel counterpart. Both share identical core specifications regarding resolution, interface, and performance metrics, differing primarily in channel count and pin configuration.

Digital Potentiometers Replacement Considerations

The AD5242 serves as a functional dual-channel equivalent within the same family. Other ADI digital potentiometers like the AD5200 series offer SPI interfaces instead of I2C. Cross-referencing pinouts is essential when substituting packages, such as moving between SOIC and TSSOP variants.