AD5172BRMZ50-RL7

Overview

The AD5172BRMZ50-RL7 is a dual-channel, 256-position digital potentiometer from Analog Devices. It features one-time programmable (OTP) memory using fuse link technology for permanent resistance retention. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V and communicates via an I²C-compatible interface. Key electrical parameters include a nominal end-to-end resistance of 50 kΩ, a temperature coefficient of 35 ppm/°C, and a maximum supply current of 6 µA. It is housed in a compact 10-lead MSOP package.

Feature Summary

• Dual-channel architecture with 256 tap positions per channel
• One-time programmable (OTP) fuse link technology for non-volatile settings
• I²C-compatible serial interface for control
• Low power consumption with 6 µA maximum supply current

Applications

• Systems calibration
• Electronics level setting
• Mechanical trimmer replacement
• Permanent factory PCB settings
• Transducer adjustment for sensors

Procurement Notes

Verify the specific resistance value suffix (e.g., 50 for 50 kΩ) against the required circuit design. Confirm that the OTP programming capability aligns with the application's need for permanent or semi-permanent settings. Ensure the I²C address configuration meets system requirements, noting that this model lacks the additional address pins found in the AD5173 variant.

Selection Notes

Select the AD5172BRMZ50-RL7 when a dual-channel solution with permanent memory retention is required. Compare the 50 kΩ resistance option against available 2.5 kΩ, 10 kΩ, and 100 kΩ variants to match impedance needs. Consider the AD5173 if multiple devices require distinct hardware addresses via AD0/AD1 pins, as the AD5172 does not support this feature.

Part Context

This component belongs to the AD517x family of digital potentiometers, which utilize fuse link technology. The AD5172 is the dual-channel version without extra address pins, whereas the AD5173 includes AD0 and AD1 pins for multi-device addressing. Both share similar electrical characteristics and OTP functionality.

Replacement Considerations

Direct replacements within the same family include the AD5173BRMZ50-RL7 if address pin flexibility is needed. Other series like the AD5162 offer volatile memory instead of OTP. Verify pin compatibility and interface protocols before substituting.