AD5173BRM10

Overview

The AD5173BRM10 is a dual-channel, 256-position digital potentiometer manufactured by Analog Devices. It features one-time programmable (OTP) memory for permanent resistance settings and operates on a single supply voltage ranging from 2.7 V to 5.5 V. The device utilizes an I²C-compatible serial interface for control and includes dedicated address decode pins (AD0, AD1) for multi-device systems. With a nominal end-to-end resistance of 10 kΩ, it offers a low temperature coefficient of 35 ppm/°C and a maximum supply current of 6 µA.

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 with full read/write wiper register access
• Programmable address bits (AD0, AD1) for multiple package decoding

Applications

• Systems calibration and electronics level setting
• Replacement for 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 the exact resistance value and package variant. Ensure that the OTP programming requirements are met during design, as the process involves a high-voltage pulse that cannot be reversed or retried if unsuccessful.

Selection Notes

Select this component when a dual-channel configuration with nonvolatile memory is required. The 10 kΩ resistance option provides a balance between power consumption and noise performance. Verify that the system can provide the necessary 5.6 V to 5.8 V supply rail for the OTP programming phase, as standard operating voltages are insufficient for fuse blowing.

Part Context

This part belongs to the AD5172/AD5173 family of 256-position digital potentiometers. The AD5173 variant is distinguished by the inclusion of two additional address pins (AD0 and AD1), allowing for up to four devices to be addressed on a single I²C bus. This distinguishes it from the AD5172, which lacks these address pins.

Replacement Considerations

The AD5172BRM10 is a compatible alternative within the same family but lacks the AD0 and AD1 address pins. Substitution requires verifying that the application does not require multiple devices on the same I²C bus or that fixed addressing is sufficient.