AD5274BRMZ-20-RL7

Digital Potentiometers Overview

The AD5274BRMZ-20-RL7 is a single-channel digital rheostat featuring 256-position resolution and an I²C-compatible interface. It offers a nominal resistance of 20 kΩ with a maximum ±1% resistor tolerance error in R-Perf mode. The device includes 50-times programmable (50-TP) nonvolatile memory for wiper position storage. Operating on 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 within an extended industrial temperature range of −40°C to +125°C.

Digital Potentiometers Feature Summary

• 256-position resolution with 8-bit control
• 20 kΩ nominal resistance with ±1% tolerance in R-Perf mode
• 50-times programmable nonvolatile memory
• I²C interface supporting standard and fast modes

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 ordering suffix against manufacturer documentation to confirm packaging type and tape/reel specifications. Ensure compatibility with the target I²C bus voltage levels and address configuration via the ADDR pin. Confirm thermal requirements for the MSOP-10 package in the final application environment.

Digital Potentiometers Selection Notes

Select this model for applications requiring 256 discrete resistance steps rather than the 1024 steps provided by the AD5272 variant. The 20 kΩ value suits moderate impedance circuits. Verify that the I²C address bits set by the ADDR pin do not conflict with other devices on the bus. Ensure the external capacitor on EXT_CAP meets the ≥7 V rating requirement.

Digital Potentiometers Part Context

This part belongs to the AD5272/AD5274 family of digital rheostats from Analog Devices. While sharing the same interface and memory architecture, the AD5274 provides 256 positions compared to the AD5272's 1024 positions. Both share identical electrical characteristics regarding tolerance, temperature coefficient, and power supply ranges.

Digital Potentiometers Replacement Considerations

The AD5272 series offers higher resolution (1024 positions) but shares the same package and interface. Direct substitution requires verifying if the lower resolution of the AD5274 meets the application's precision requirements.