AD5290YRMZ50-R7

Digital Potentiometers Overview

The AD5290YRMZ50-R7 is a high-voltage, 8-bit digital potentiometer from Analog Devices, featuring a nominal resistance of 50 kΩ and 256 tap positions. It operates on single supplies from +4.5 V to +33 V or dual supplies from ±4.5 V to ±16.5 V. The device utilizes an iCMOS process for low power consumption and supports a 3-wire SPI-compatible serial interface. Key electrical characteristics include a typical temperature coefficient of 35 ppm/°C, total harmonic distortion of 0.002%, and a settling time of 4 μs. It is housed in a compact MSOP-10 package and rated for operation between −40°C and +125°C.

Digital Potentiometers Feature Summary

• High voltage operation with ±15 V dual-supply or up to +30 V single-supply capability
• 256-position resolution with 50 kΩ nominal end-to-end resistance
• 3-wire SPI-compatible serial interface supporting daisy-chain configurations
• Low total harmonic distortion (0.002% typical) and 35 ppm/°C temperature coefficient

Digital Potentiometers Applications

• High voltage digital-to-analog conversion
• Programmable gain and offset adjustment circuits
• Actuator control systems
• Mechanical potentiometer replacement in harsh environments

Digital Potentiometers Procurement Notes

Verify the specific suffix -R7 indicates reel packaging when sourcing. Confirm the 50 kΩ resistance value matches the design requirement, as the AD5290 family also offers 10 kΩ and 100 kΩ variants. Ensure the MSOP-10 package footprint aligns with the PCB layout. Check for automotive grade availability if operating within the extended temperature range is critical.

Digital Potentiometers Selection Notes

Select this component when high voltage handling up to ±15 V is required alongside precise digital control. The 50 kΩ resistance balances bandwidth and power dissipation; lower values offer higher bandwidth while higher values reduce current draw. Verify that the 3-wire interface timing meets the system clock requirements. Consider the open-drain SDO pin requirement for external pull-up resistors in daisy-chain setups.

Digital Potentiometers Part Context

The AD5290 series represents Analog Devices' iCMOS technology platform, designed for analog systems requiring higher voltage levels. This specific part number denotes the 50 kΩ variant in tape-and-reel packaging. It serves as a solid-state alternative to mechanical potentiometers, offering enhanced reliability and programmability for industrial and automotive applications.

Digital Potentiometers Replacement Considerations

Direct substitutes within the same family include AD5290YRMZ10-R7 (10 kΩ) and AD5290YRMZ100-R7 (100 kΩ). Cross-family replacements may require verification of supply voltage compatibility and interface protocols. Ensure any substitute maintains the MSOP-10 package dimensions for direct board replacement.