AD5231BRUZ10-REEL7

Digital Potentiometers Overview

The AD5231BRUZ10-REEL7 is a single-channel, nonvolatile digital potentiometer with 1024-position resolution and 10 kΩ terminal resistance. It operates on a single supply of 2.7 V to 5.5 V or dual supplies of ±2.25 V to ±2.75 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 electrical parameters include a typical power-on refresh time of 140 µs, 100-year data retention at 55°C, and 100 kCycles endurance. It is housed in a 16-lead TSSOP package.

Digital Potentiometers Feature Summary

• 1024-step resolution with nonvolatile memory maintaining wiper settings across power cycles
• SPI-compatible 4-wire serial interface supporting daisy-chain operations
• 28 bytes of extra EEMEM for user-defined data storage
• Permanent memory write protection via WP pin and predefined increment/decrement 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 specific ordering suffix REEL7 confirms reel packaging rather than tube or cut tape. Confirm the BRU variant meets industrial temperature range requirements (-40°C to +85°C). Check current availability status as digital potentiometer lines may undergo lifecycle changes. Ensure the 10 kΩ resistance value matches the circuit design needs compared to 50 kΩ or 100 kΩ alternatives.

Digital Potentiometers Selection Notes

Select this component when solid-state reliability and remote controllability are required over mechanical pots. The 1024-position resolution offers finer adjustment than standard 8-bit (256-position) devices. Ensure the system voltage falls within the 2.7 V to 5.5 V single-supply range. Consider the 140 µs restore time if rapid power cycling is involved. Verify that the SPI timing parameters align with the host microcontroller's capabilities.

Digital Potentiometers Part Context

This part belongs to the AD5231 family of nonvolatile digital potentiometers from Analog Devices. The 'B' indicates the industrial temperature grade, 'RU' denotes the TSSOP-16 package, 'Z' signifies lead-free status, '10' specifies the 10 kΩ resistance, and 'REEL7' indicates the tape and reel packaging quantity. Other variants exist with different resistance values and packaging options.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same family include AD5231BRU50 (50 kΩ) and AD5231BRU100 (100 kΩ). For higher resolution, consider the AD5232 series which offers 256 positions but different memory characteristics. Cross-check SPI compatibility with other digital potentiometers from vendors like Microchip or TI if sourcing constraints require it.