AD5173BRM10-RL7

Overview

The AD5173BRM10-RL7 is a dual-channel, 256-position digital potentiometer manufactured by Analog Devices Inc. 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. 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 with full read/write capability
• Programmable address bits (AD0, AD1) for multiple package decoding

Applications

• Systems calibration and electronics level setting
• Replacement for mechanical trimmers in new designs
• Permanent factory PCB setting and transducer adjustment
• 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 packaging configuration. Confirm that the OTP programming requirements are met during system design, as the process involves a high-voltage pulse that cannot be reversed. Ensure compatibility with the target I²C bus voltage levels and check for any lead-free or RoHS compliance updates in the latest datasheet revision.

Selection Notes

Select this component when a dual-channel solution with nonvolatile memory is required without the cost of external EEPROMs. The 10 kΩ resistance value provides a balance between power consumption and noise performance. Verify that the application can support the temporary OTP programming voltage requirement of 5.6 V to 5.8 V if permanent locking is necessary. Consider the AD5172 variant if address decoding pins are not needed.

Part Context

This part belongs to the AD5172/AD5173 family of 256-position digital potentiometers. The AD5173 variant specifically distinguishes itself from the AD5172 by including two additional address decode pins (AD0 and AD1), allowing up to four devices to be addressed on a single I²C bus. Both variants share identical electrical characteristics and OTP functionality.

Replacement Considerations

The AD5172BRM10-RL7 is a direct functional substitute if address decoding is unnecessary. Other families like the AD5161 offer SPI interfaces but lack the dual-channel OTP feature.