AD5273BRJ1-REEL7

Digital Potentiometers Overview

The AD5273BRJ1-REEL7 is a 6-bit, one-time programmable (OTP) digital potentiometer from Analog Devices. It features a single channel with 64 tap positions and an end-to-end resistance of 1 kΩ. The device utilizes I²C-compatible digital control for setting the wiper position, which can be permanently fixed via fuse link technology. Operating on a supply voltage range of 2.7 V to 5.5 V, it draws a maximum supply current of 5 µA. The component is housed in an 8-lead SOT-23 package and supports an industrial temperature range from −40°C to +105°C.

Digital Potentiometers Feature Summary

• One-time programmable (OTP) memory using fuse link technology for permanent setting retention
• I²C-compatible serial interface for digital control
• Single channel with 64 adjustable tap positions
• Ultralow power consumption with 5 µA maximum supply current

Digital Potentiometers Applications

• System calibrations requiring fixed resistance values
• Replacement for mechanical potentiometers and trimmers
• Electronics level settings
• Transducer circuit adjustments

Digital Potentiometers Procurement Notes

Verify the specific resistance value suffix in the part number, as the AD5273 family includes 1 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ options. Confirm that the application environment does not require dynamic adjustment after programming, as the OTP feature is irreversible. Ensure the system provides a dedicated 5 V to 5.5 V supply capable of sourcing 100 mA for the OTP programming phase if factory programming is required.

Digital Potentiometers Selection Notes

Select this component when a cost-effective, nonvolatile resistance setting is needed without the complexity of EEPROM management. The 1 kΩ variant offers the highest bandwidth (up to 6 MHz) among the available resistance options. Designers must account for the requirement of a separate high-voltage supply during the one-time programming process, which differs from standard operating conditions.

Digital Potentiometers Part Context

The AD5273 belongs to the digiPOT family designed for applications where the resistance value is determined once and remains constant. It serves as a low-cost alternative to electrically erasable memories (EEMEM) for static calibration tasks. The device simplifies factory programming by allowing unlimited adjustments prior to the final fuse blow command.

Digital Potentiometers Replacement Considerations

For applications requiring dynamic resistance adjustment, consider the AD5231, AD5232, AD5233, or AD5235 families which utilize EEMEM. For higher resolution requirements, the AD5270 or AD5272 series offer 10-bit resolution with nonvolatile memory.