AD5231BRUZ50

Digital Potentiometers Overview

The AD5231BRUZ50 is a single-channel, nonvolatile memory digital potentiometer with 1024-position resolution and a nominal terminal resistance of 50 kΩ. It operates on a single supply from 3 V to 5 V or dual supplies of ±2.5 V. The device features an SPI-compatible serial interface for wiper setting control and includes 28 bytes of extra nonvolatile memory for user-defined data. Key specifications include a typical EEMEM restore time of 140 µs, full monotonic operation, and permanent memory write protection via the WP pin. It guarantees operation over the extended industrial temperature range of −40°C to +85°C.

Digital Potentiometers Feature Summary

• 1024-Position Resolution: Provides precise electronic adjustment equivalent to mechanical potentiometers with solid-state reliability.
• Nonvolatile Memory (EEMEM): Maintains wiper settings across power cycles with a typical data retention of 100 years at 55°C.
• SPI-Compatible Interface: Utilizes a standard 3-wire serial interface supporting readback, daisy-chaining, and advanced increment/decrement commands.
• User Data Storage: Includes 28 bytes of extra nonvolatile memory for storing system identification or lookup table information.

Digital Potentiometers Applications

• Mechanical potentiometer replacement in space-constrained designs
• Instrumentation gain and offset adjustment
• Programmable voltage-to-current conversion circuits
• Sensor calibration systems requiring stable resistance values
• Low-resolution DAC replacement applications

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix 'U' corresponds to the TSSOP-16 package and 'Z50' indicates the 50 kΩ terminal resistance variant. Confirm that the component meets RoHS compliance standards required for the target assembly process. Ensure the supply chain source provides valid traceability documentation for the Analog Devices manufacturer part number.

Digital Potentiometers Selection Notes

Select this component when a single-channel variable resistor with persistent state is required. The 50 kΩ resistance value suits moderate impedance applications. Consider the 1024-step resolution for fine adjustment needs. Verify that the system logic levels are compatible with the 3 V to 5 V operating range and that the SPI controller supports the required clock polarity and phase configurations.

Digital Potentiometers Part Context

The AD5231 belongs to the AD523X family of nonvolatile digital potentiometers, which also includes the AD5232 (dual channel) and AD5233 (quad channel). This family shares common architectural features such as the SPI interface, EEMEM storage capabilities, and similar command sets. The BRUZ50 designation specifically identifies the 50 kΩ version in the TSSOP-16 package within this product line.

Digital Potentiometers Replacement Considerations

Direct pin-for-pin replacements within the same family include the AD5231BRU100 (100 kΩ) and AD5231BRU10 (10 kΩ), provided the terminal resistance difference is acceptable for the circuit design. Other manufacturers may offer functional equivalents, but verification of SPI timing parameters and EEMEM endurance ratings is necessary.