AD5227BUJZ50-RL7

Digital Potentiometers Overview

The AD5227BUJZ50-RL7 is a single-channel, 64-position volatile digital potentiometer manufactured by Analog Devices Inc. It features a 50 kΩ end-to-end terminal resistance and operates on a single supply voltage ranging from 2.7 V to 5.5 V. The device utilizes a simple 3-wire up/down control interface (CS, CLK, U/D) for manual or digital adjustment. Key electrical characteristics include a typical supply current of 0.4 μA, an adjustment settling time of 1 μs, and a nominal resistor tolerance of ±20%. It is housed in a compact 8-pin TSOT package and is qualified for the automotive temperature range of −40°C to +105°C.

Digital Potentiometers Feature Summary

• 64-step resolution with 50 kΩ nominal resistance and ±20% tolerance
• Ultralow power consumption with 0.4 μA typical supply current
• Simple 3-wire serial interface supporting up/down digital or manual control
• Automotive grade qualification operating between −40°C and +105°C

Digital Potentiometers Applications

• Mechanical potentiometer and trimmer replacements
• LCD backlight, contrast, and brightness controls
• Portable electronics level adjustment
• Programmable power supply settings

Digital Potentiometers Procurement Notes

Verify the specific resistance value suffix (e.g., BUJZ50 indicates 50 kΩ) against design requirements, as the AD5227 family includes 10 kΩ and 100 kΩ variants. Confirm that the volatile memory type aligns with system power-up behavior expectations. Ensure the TSOT-8 package dimensions fit the PCB layout constraints. Check RoHS compliance status if required by regional regulations.

Digital Potentiometers Selection Notes

Select this component when a low-cost, solid-state replacement for mechanical pots is needed in space-constrained designs. The 64-position resolution offers approximately six times the precision of standard mechanical trimmers. Consider the volatile nature of the wiper setting; if non-volatile retention is critical without external biasing, alternative models like the AD511x series should be evaluated. Verify that the 50 kΩ resistance value suits the target circuit's impedance and current limits.

Digital Potentiometers Part Context

The AD5227BUJZ50-RL7 belongs to the AD5227 family of 64-position up/down control digital potentiometers. The 'BUJZ' suffix denotes the 50 kΩ resistance variant in the TSOT-8 package, while 'RL7' indicates tape and reel packaging. This family is designed to replace traditional mechanical components in portable and automotive applications, offering improved reliability and layout flexibility.

Digital Potentiometers Replacement Considerations

Direct pin-compatible substitutes within the same family include AD5227BUJZ10-RL7 (10 kΩ) and AD5227BUJZ100-RL7 (100 kΩ). For non-volatile functionality, consider the AD511x series, though pinouts and interfaces may differ. Verify that any replacement maintains the 2.7 V to 5.5 V supply range and automotive temperature specifications.