AD5173BRMZ50-RL7

Overview

The AD5173BRMZ50-RL7 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 50 kΩ with a temperature coefficient of 35 ppm/°C and nominal tolerance of ±20%. It utilizes an I²C-compatible interface and includes dedicated address pins (AD0, AD1) for multi-device decoding. The unit 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 serial interface with AD0 and AD1 address decode pins
• Low power consumption: 6 µA maximum supply current

Applications

• Systems calibration
• Electronics level setting
• Mechanical trimmer replacement
• Transducer adjustment for pressure, temperature, position, chemical, and optical sensors
• RF amplifier biasing

Procurement Notes

Verify the specific ordering suffix RL7 corresponds to the reel packaging format required for the assembly line. Confirm that the OTP programming voltage requirements (5.6 V to 5.8 V at 100 mA) are supported by the system design, as this differs from the standard operating supply range.

Selection Notes

Select the AD5173 over the AD5172 when multiple devices are present on the same bus, as it includes programmable address bits AD0 and AD1. Ensure the application requires non-volatile storage, as the OTP feature allows only a single programming event after which the setting is permanently fixed upon power-up.

Part Context

This component belongs to the AD5172/AD5173 family of 256-position digital potentiometers. The BR suffix indicates a commercial temperature range variant (-40°C to +125°C). The MZ designation specifies the 10-lead MSOP package type, while the 50 indicates the 50 kΩ resistance value.

Replacement Considerations

The AD5172BRMZ50-RL7 is a compatible alternative if address pin decoding is not required. Other family members include the AD5170 and AD5171 series, though these typically feature single channels or different interface options.