AD5172BRMZ2.5

Overview

The AD5172BRMZ2.5 is a dual-channel, 256-position digital potentiometer featuring one-time programmable (OTP) memory via fuse link technology. It operates on a single supply of 2.7 V to 5.5 V with a maximum supply current of 6 µA. The device provides an end-to-end resistance of 2.5 kΩ and utilizes a standard I²C-compatible 2-wire serial interface for control. Key electrical parameters include a nominal resistor tolerance of ±20% at 25°C, a resistance 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 tap positions per channel
• One-time programmable (OTP) fuse link technology for permanent setting retention
• I²C-compatible 2-wire serial interface for wiper register read/write
• Low power consumption with 6 µA maximum supply current

Applications

• Systems calibration and permanent factory PCB settings
• Replacement for mechanical trimmers in new designs
• Transducer adjustment for pressure, temperature, and optical sensors
• RF amplifier biasing and gain control

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact resistance value and package variant. Ensure that the design supports the required OTP programming voltage conditions if permanent configuration is intended. Cross-reference the datasheet revision to confirm all electrical characteristics match the procurement requirements.

Selection Notes

Select this component when a non-volatile, solid-state alternative to mechanical potentiometers is required for dual-channel applications. The 2.5 kΩ resistance value suits low-power signal conditioning circuits. Consider the I²C interface compatibility with the host controller and verify that the 10-lead MSOP footprint fits the available PCB space constraints.

Part Context

This part belongs to the AD5172/AD5173 family of digital potentiometers manufactured by Analog Devices Inc. The AD5172 variant specifically lacks the extra address decode pins found in the AD5173 model, utilizing fixed addressing within the I²C bus structure. The family is characterized by its use of thin-film technology for low temperature coefficients.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the verified source material.