AD5270BCPZ-20-RL7

Digital Potentiometers Overview

The AD5270BCPZ-20-RL7 is a single-channel, 10-bit (1024-position) digital rheostat manufactured by Analog Devices. It features a nominal resistance of 20 kΩ with a maximum ±1% end-to-end resistor tolerance error and a temperature coefficient of 5 ppm/°C in rheostat mode. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V or dual supplies of ±2.5 V to ±2.75 V. It includes 50-times programmable (50-TP) nonvolatile memory that restores the wiper setting upon power-up. Communication is handled via an SPI-compatible interface supporting up to 50 MHz clock rates.

Digital Potentiometers Feature Summary

• 1024-position resolution with guaranteed ±1% nominal resistor tolerance error
• 50-times programmable (50-TP) nonvolatile memory for persistent wiper settings
• SPI-compatible serial interface with wiper setting readback capability
• Low temperature coefficient of 5 ppm/°C in rheostat mode

Digital Potentiometers Applications

• Mechanical rheostat replacements
• Op-amp variable gain control
• Instrumentation gain and offset adjustment
• Programmable filters, delays, and time constants
• Sensor calibration

Digital Potentiometers Procurement Notes

Verify the package type matches the design requirements, as the AD5270 series is available in both 10-lead LFCSP and MSOP packages. Confirm the specific suffix indicates the 20 kΩ resistance value and the reel packaging format. Ensure the operating environment stays within the specified -40°C to +125°C industrial temperature range for full specification compliance.

Digital Potentiometers Selection Notes

Select this component when high precision is required due to its industry-leading 1% resistor tolerance. Choose the AD5270 over the AD5271 if 10-bit (1024-position) resolution is necessary, as the AD5271 offers only 8-bit resolution. Ensure the application voltage does not exceed the 5.5 V single-supply limit or the ±2.75 V dual-supply limit.

Digital Potentiometers Part Context

This part belongs to the AD5270/AD5271 family of digital rheostats designed to replace mechanical potentiometers in space-constrained applications. The 'BCPZ' suffix typically denotes the MSOP package variant, while '20' specifies the 20 kΩ resistance value. The 'RL7' suffix indicates the tape and reel packaging configuration for automated assembly.

Digital Potentiometers Replacement Considerations

The AD5271 is a compatible alternative offering 8-bit (256-position) resolution with similar electrical characteristics and pinout. Other variants in the family include 50 kΩ and 100 kΩ resistance options. Verify that any replacement maintains the same SPI interface timing and voltage supply requirements.