AD5172BRMZ10

Overview

The AD5172BRMZ10 is a dual-channel, 256-position digital potentiometer featuring one-time programmable (OTP) memory. It operates on a single supply voltage ranging from 2.7 V to 5.5 V with a maximum supply current of 6 µA. The device utilizes an I²C-compatible interface for control and offers a nominal end-to-end resistance of 10 kΩ with a temperature coefficient of 35 ppm/°C. Designed for compact applications, it is housed in a 10-lead MSOP package measuring 3 mm × 4.9 mm. The component supports full read/write access to the wiper register prior to OTP activation.

Feature Summary

• Dual-channel architecture with 256 tap positions per channel
• One-time programmable (OTP) fuse link technology for permanent setting retention
• I²C-compatible serial interface with power-on preset to midscale
• Low power consumption with 6 µA maximum supply current

Applications

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

Procurement Notes

Verify the specific suffix '10' confirms the 10 kΩ resistor value during sourcing. Confirm that the manufacturing lot date aligns with project timelines, as OTP programming requires specific voltage conditions not present during standard operation. Ensure ESD precautions are maintained due to the sensitivity of the internal fuse structures.

Selection Notes

Select this component when non-volatile resistance settings are required without the cost of EEPROM. The 10 kΩ variant is suitable for moderate impedance circuits. Note that the AD5173 variant includes additional address pins (AD0/AD1) if multiple devices are used on the same bus. Verify that the external power supply can provide the necessary 5.6 V to 5.8 V for OTP programming if permanent storage is needed.

Part Context

This part belongs to the AD517x family of digital potentiometers, which utilize thin-film technology for low temperature coefficients. The AD5172 specifically denotes the dual-channel configuration without extra address pins, distinguishing it from the AD5173. The BRMZ suffix indicates the commercial temperature range and MSOP packaging format.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.