AD5173BRMZ10

Overview

The AD5173BRMZ10 is a dual-channel, 256-position digital potentiometer featuring one-time programmable (OTP) memory. It utilizes fuse link technology to permanently retain resistance settings after activation. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V and communicates via an I²C-compatible 2-wire serial interface. Each channel provides 256 tap positions with a nominal end-to-end resistance of 10 kΩ and a temperature coefficient of 35 ppm/°C. The component includes extra address decode pins (AD0, AD1) for multiple package decoding and supports both rheostat and potentiometer divider configurations.

Feature Summary

• Dual-channel architecture with 256-position resolution per channel
• One-time programmable (OTP) fuse link technology for permanent setting retention
• I²C-compatible 2-wire serial interface with additional AD0/AD1 address pins
• Low power consumption with maximum supply current of 6 µA

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm pinout compatibility and address configuration. The AD5173 variant includes dedicated AD0 and AD1 pins for hardware addressing, which differs from the AD5172. Ensure that the design accounts for the external high-voltage requirement (5.6 V to 5.8 V) necessary for OTP programming if permanent storage is utilized.

Selection Notes

Select this component when dual-channel adjustment with nonvolatile memory is required without the cost of EEPROM. The 10 kΩ resistance value offers a balance between noise performance and drive capability. Consider the 10-lead MSOP package dimensions (3 mm × 4.9 mm) for space-constrained layouts. Verify that the system can provide the temporary 100 mA current pulse required during the OTP programming phase.

Part Context

This part belongs to the AD5172/AD5173 family of 256-position digital potentiometers. The primary distinction between the AD5172 and AD5173 models is the inclusion of programmable address bits (AD0 and AD1) on the AD5173, allowing for multiple devices on the same I²C bus. Both variants share identical electrical characteristics, OTP functionality, and physical packaging.

Replacement Considerations

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