AD5231BRUZ50-REEL7

Digital Potentiometers Overview

The AD5231BRUZ50-REEL7 is a single-channel, nonvolatile memory digital potentiometer with 1024-position resolution. It operates on a single supply of 3 V to 5 V or dual supplies of ±2.5 V. The device features an SPI-compatible serial interface for programming the RDAC register and storing settings in EEMEM. Key electrical parameters include a nominal terminal resistance of 50 kΩ, wiper resistance of 50 Ω at half scale (3 V), and a typical power-on restore time of 140 µs. It guarantees full monotonic operation over an extended industrial temperature range of −40°C to +85°C.

Digital Potentiometers Feature Summary

• 1024-position resolution with nonvolatile memory maintaining wiper settings
• SPI-compatible serial interface with readback and daisy-chain capabilities
• EEMEM protection via hardware WP pin and software commands
• Predefined linear increment/decrement and ±6 dB/step log taper instructions

Digital Potentiometers Applications

• Mechanical potentiometer replacement
• Instrumentation gain and offset adjustment
• Programmable voltage-to-current conversion
• Sensor calibration

Digital Potentiometers Procurement Notes

Verify the ordering suffix 'U' corresponds to the TSSOP-16 package and 'Z50' indicates the 50 kΩ terminal resistance variant. Confirm the 'REEL7' designation matches the required tape and reel quantity for automated assembly processes. Ensure compatibility with the specified 3 V to 5 V single-supply or ±2.5 V dual-supply operating conditions.

Digital Potentiometers Selection Notes

Select this component when a solid-state replacement for mechanical potentiometers is required with high resolution and nonvolatile storage. The 50 kΩ terminal resistance offers a balance between power consumption and noise performance. Consider the 140 µs restore time for applications requiring rapid power-up state recovery. Verify that the SPI interface timing requirements align with the host microcontroller's capabilities.

Digital Potentiometers Part Context

The AD5231 belongs to Analog Devices' family of nonvolatile digital potentiometers. It provides enhanced reliability and remote controllability compared to traditional mechanical components. The device integrates 28 bytes of extra nonvolatile memory for user-defined data, such as system identification or lookup tables, alongside the primary wiper position storage.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same family include the AD5232 (dual channel) and AD5233 (quad channel). For single-channel applications requiring different resolutions, verify if the 256-position AD5200 or 33-position AD5201 meets the specific resolution needs while maintaining similar interface characteristics.