AD5172BRM50

Overview

The AD5172BRM50 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 settings. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V and communicates via an I²C-compatible interface. Each channel provides 256 tap positions with a nominal end-to-end resistance of 50 kΩ. Key electrical parameters include a maximum supply current of 6 µA, a temperature coefficient of 35 ppm/°C, and a typical power-on settling time of 5 µs. The component is housed in a compact 10-lead MSOP package.

Feature Summary

• Dual-channel architecture with 256-position resolution per channel
• One-time programmable (OTP) fuse link technology for permanent setting retention
• I²C-compatible serial interface for digital control
• Low power consumption with 6 µA maximum supply current
• Wide operating temperature range from −40°C to +125°C

Applications

• Systems calibration requiring permanent factory settings
• Replacement for mechanical trimmers in new designs
• Electronics level setting and transducer adjustment
• RF amplifier biasing and gain control
• Offset adjustment in sensor circuits

Procurement Notes

Verify the specific ordering suffix for resistance value and package type, as the base model number may correspond to multiple variants. Confirm availability status, as this component may be subject to discontinuation or limited stock depending on the distributor. Ensure the design supports the required OTP programming voltage if permanent configuration is needed.

Selection Notes

Select the AD5172BRM50 when a dual-channel solution with permanent non-volatile settings is required. The 50 kΩ resistance value suits applications needing moderate impedance levels. Consider the AD5173 variant if additional address decode pins (AD0/AD1) are necessary for multi-device systems. Verify that the I²C bus speed and pull-up requirements align with the controller specifications.

Part Context

The AD5172 is part of the AD517x family of digital potentiometers, which also includes the single-channel AD5170 and the addressable AD5173. These devices share similar OTP technology and I²C interfaces but differ in channel count and addressing capabilities. The BRM50 suffix indicates the 50 kΩ resistance variant in the MSOP-10 package.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult Analog Devices for current alternative recommendations or cross-reference with other OTP digital potentiometers offering dual channels and I²C interfaces.