AD5243BRMZ50-RL7

Digital Potentiometers Overview

The AD5243BRMZ50-RL7 is a dual-channel, 256-position digital potentiometer manufactured by Analog Devices Inc. It operates on a single supply voltage ranging from 2.7 V to 5.5 V with a maximum supply current of 6 µA. The device features an end-to-end resistance of 50 kΩ and a temperature coefficient of 35 ppm/°C. It utilizes an I²C-compatible serial interface for full read/write access to the wiper register. The component is housed in a compact 10-lead MSOP package (3 mm × 4.9 mm) and supports an operating temperature range from −40°C to +125°C.

Digital Potentiometers Feature Summary

• Dual-channel architecture with 256 programmable tap positions per channel
• I²C-compatible 2-wire serial interface for digital control
• Power-on preset function initializes wipers to midscale
• Low power consumption with 6 µA maximum supply current

Digital Potentiometers Applications

• Systems calibrations
• Electronics level settings
• Replacement for mechanical trimmers in new designs
• Transducer adjustment for pressure, temperature, position, chemical, and optical sensors
• RF amplifier biasing

Digital Potentiometers Procurement Notes

Verify the specific suffix RL7 corresponds to the reel packaging format required for automated assembly processes. Confirm that the BRMZ designation aligns with the commercial grade temperature range and MSOP package requirements for the target PCB layout. Ensure compatibility with existing I²C bus addressing schemes as this model lacks additional address decode pins found in other variants.

Digital Potentiometers Selection Notes

Select this component when a dual-channel variable resistance solution is required within a 50 kΩ nominal value. The 256-position resolution provides sufficient granularity for most calibration tasks. Verify that the system power supply remains within the 2.7 V to 5.5 V range to ensure proper operation of the internal CMOS logic and RDAC switches. Consider the 35 ppm/°C temperature coefficient for applications requiring stability across wide thermal variations.

Digital Potentiometers Part Context

This part belongs to the AD5243 family of digital potentiometers, which are designed to replace mechanical potentiometers in printed circuit board assemblies. Unlike the AD5248 variant, the AD5243 does not include extra address decode pins (AD0, AD1), limiting its use to single-device or uniquely addressed multi-device configurations on the I²C bus. It serves as a direct electronic equivalent to a 3-terminal mechanical potentiometer.

Digital Potentiometers Replacement Considerations

Public confirmed substitute part numbers: None.