AD5170BRMZ50

Overview

The AD5170BRMZ50 is a single-channel, 256-position digital potentiometer manufactured by Analog Devices Inc. It features an I²C-compatible serial interface and operates on a single supply voltage ranging from 2.7 V to 5.5 V. The device incorporates two-time programmable (TTP) fuse link technology, allowing for permanent resistance setting with a second-chance programming capability. It provides a nominal end-to-end resistance of 50 kΩ with a temperature coefficient of 35 ppm/°C. The component is housed in a compact 10-lead MSOP package measuring 3 mm × 4.9 mm.

Feature Summary

• Two-time programmable (TTP) fuse link technology for permanent resistance settings
• I²C-compatible 2-wire serial interface with full read/write wiper register access
• Single supply operation from 2.7 V to 5.5 V with low power consumption (max 6 µA)
• Wide operating temperature range from −40°C to +125°C

Applications

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

Procurement Notes

Verify the specific ordering suffix '50' confirms the 50 kΩ nominal resistance value. Confirm the 'BRM' designation indicates the commercial temperature grade (-40°C to +85°C) or check if the datasheet specifies the extended grade (-40°C to +125°C) for this exact part number variant. Ensure the MSOP-10 package dimensions match the design footprint requirements.

Selection Notes

Select the AD5170BRMZ50 when a 50 kΩ digital potentiometer with I²C control is required. The TTP feature is suitable for applications needing permanent factory-set values without external EEPROM. Verify that the system supply voltage falls within the 2.7 V to 5.5 V range. Note that OTP programming requires a separate VDD_OTP supply of 5.6 V to 5.8 V capable of driving 100 mA.

Part Context

The AD5170 belongs to the AD517x family of 256-position digital potentiometers. The BRMZ50 variant specifically denotes the 50 kΩ resistance option in the MSOP-10 package. Other variants in the series include 2.5 kΩ, 10 kΩ, and 100 kΩ options. The device is designed to replace mechanical potentiometers in applications requiring solid-state reliability and precise resistance control.

Replacement Considerations

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