AD5273BRJ1-R2

Digital Potentiometers Overview

The AD5273BRJ1-R2 is a 64-position, one-time programmable (OTP) digital potentiometer from Analog Devices. It utilizes fuse link technology to permanently store a single resistance setting after unlimited pre-programming adjustments. The device features an I²C-compatible digital interface and operates within a supply voltage range of 2.7 V to 5.5 V. Key electrical specifications include a maximum supply current of 5 µA, a typical adjustment settling time of 5 µs, and an operating temperature range of −40°C to +105°C. It is available in end-to-end terminal resistances of 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.

Digital Potentiometers Feature Summary

• One-time programmable (OTP) fuse link technology for permanent memory retention
• I²C-compatible digital control interface with two-wire communication
• Ultralow power consumption with maximum supply current of 5 µA
• Compact 8-lead SOT-23 standard package

Digital Potentiometers Applications

• System calibrations requiring fixed settings
• Electronics level settings
• Replacement for mechanical potentiometers and trimmers
• Transducer circuit adjustments
• Programmable filters up to 6 MHz bandwidth (1 kΩ variant only)

Digital Potentiometers Procurement Notes

Verify the specific resistance value suffix (e.g., BRJ1 for 1 kΩ) against the required application design. Confirm that the OTP programming infrastructure supports the required 5 V to 5.5 V VDD_OTP window and 100 mA sourcing capability during the 400 ms programming phase. Ensure the I²C bus logic levels meet the VIH minimum requirements relative to the system VDD.

Digital Potentiometers Selection Notes

Select this component when a permanent, nonvolatile resistance setting is required without the cost of EEMEM. Note that the device allows unlimited adjustments prior to fuse blowing but permits only one successful programming attempt. Verify that the required bandwidth fits within the limits defined by the chosen terminal resistance, as higher resistances significantly reduce bandwidth.

Digital Potentiometers Part Context

The AD5273 belongs to the family of 6-bit digital potentiometers designed as low-cost alternatives to electrically erasable memory devices for static applications. It serves as a direct replacement for mechanical trimmers in manufacturing environments where factory programming via computer software is preferred over manual adjustment.

Digital Potentiometers Replacement Considerations

For dynamic adjustment requirements, consider the AD523x or AD525x families which feature nonvolatile EEMEM. For SPI interface compatibility, evaluate the AD5270 series.