AD5274BRMZ-100

Digital Potentiometers Overview

The AD5274BRMZ-100 is a single-channel digital rheostat featuring 256-position resolution and an I²C-compatible interface. It offers nominal resistance values of 20 kΩ, 50 kΩ, or 100 kΩ with a maximum ±1% resistor tolerance error in R-Perf mode. The device includes 50-times programmable (50-TP) nonvolatile memory for permanent wiper setting storage. Operating from a single supply of 2.7 V to 5.5 V or dual supplies of ±2.5 V to ±2.75 V, it supports standard (100 kHz) and fast (400 kHz) data transfer modes. The component is housed in a compact 10-lead MSOP package and operates over an extended industrial temperature range of −40°C to +125°C.

Digital Potentiometers Feature Summary

• 256-position resolution with guaranteed ±1% end-to-end resistor tolerance error in R-Perf mode
• 50-times programmable (50-TP) nonvolatile memory for permanent wiper position storage
• I²C-compatible serial interface supporting standard (100 kHz) and fast (400 kHz) modes
• Single-supply operation (2.7 V to 5.5 V) or dual-supply operation (±2.5 V to ±2.75 V)

Digital Potentiometers Applications

• Mechanical rheostat replacements
• Op-amp variable gain control
• Instrumentation gain and offset adjustment
• Programmable voltage to current conversions
• Sensor calibration

Digital Potentiometers Procurement Notes

Verify the specific nominal resistance value (20 kΩ, 50 kΩ, or 100 kΩ) required for the application, as the base model number does not specify this parameter. Confirm that the 10-lead MSOP package aligns with the PCB footprint design. Ensure the system power supply falls within the specified 2.7 V to 5.5 V single-supply range or ±2.5 V to ±2.75 V dual-supply range for proper operation.

Digital Potentiometers Selection Notes

Select the AD5274 variant based on the required resolution; this model provides 256 positions compared to the 1024 positions of the AD5272. Consider the R-Perf mode if precise resistor tolerance matching is critical for open-loop applications. Verify that the I²C address configuration via the ADDR pin allows for the desired number of devices on the bus. Check thermal resistance requirements for the MSOP package in high-temperature environments.

Digital Potentiometers Part Context

The AD5274BRMZ-100 belongs to the AD5272/AD5274 family of digital rheostats manufactured by Analog Devices Inc. This family combines industry-leading variable resistor performance with nonvolatile memory in a compact package. The BRMZ suffix indicates the commercial temperature grade and MSOP packaging, while the -100 typically denotes the 100 kΩ nominal resistance option within the product line.

Digital Potentiometers Replacement Considerations

The AD5272BRMZ-100 serves as a higher-resolution alternative with 1024 positions instead of 256. Both components share identical pinouts, interfaces, and electrical characteristics except for resolution. When substituting, ensure the application does not require the finer step resolution of the AD5272, as the AD5274 provides sufficient granularity for most general-purpose rheostat applications.