AD5243BRM10-RL7

Digital Potentiometers Overview

The AD5243BRM10-RL7 is a dual-channel, 256-position digital potentiometer from Analog Devices. It features an end-to-end resistance of 10 kΩ with a linear taper and a temperature coefficient of 35 ppm/°C. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V, consuming a maximum supply current of 6 µA. It utilizes an I²C-compatible serial interface for full read/write access to the wiper registers. Packaged in a compact 10-lead MSOP (3 mm × 4.9 mm) format, it supports an operating temperature range from −40°C to +125°C.

Digital Potentiometers Feature Summary

• Dual-channel architecture providing two independent 256-position variable resistors in a single package.
• I²C-compatible 2-wire serial interface allows direct control via SDA and SCL pins.
• Power-on preset function automatically sets the wiper to midscale upon initialization.
• Low power consumption with a maximum supply current of 6 µA across the full operating voltage range.

Digital Potentiometers Applications

• Systems calibration and permanent factory PCB setting
• Replacement for mechanical trimmers in new designs
• Electronics level settings and gain control
• Transducer adjustment for pressure, temperature, and optical sensors

Digital Potentiometers Procurement Notes

Verify the specific suffix 'RL7' against the manufacturer's ordering guide to confirm reel packaging specifications. Ensure the 'B' grade tolerance matches the design requirements, as variations exist within the family. Cross-reference the pinout with the AD5248 if address decoding capabilities are needed, as they differ slightly.

Digital Potentiometers Selection Notes

Select this component when a dual-channel solution is required to save board space compared to single-channel alternatives. The 10 kΩ resistance value offers a balance between noise performance and drive capability. Verify that the system's I²C bus speed does not exceed 400 kHz, as specified in the timing characteristics. Consider the MSOP package dimensions for thermal and spatial constraints.

Digital Potentiometers Part Context

This part belongs to the AD5243/AD5248 family of high-accuracy digital potentiometers. While the AD5243 provides dual channels without address pins, the AD5248 variant includes additional AD0 and AD1 pins for multi-device addressing on the same bus. Both share identical electrical characteristics and pin configurations for the primary terminals.

Digital Potentiometers Replacement Considerations

The AD5243BRMZ10-RL7 is a compatible alternative offering the same dual-channel, 10 kΩ specification in the same MSOP-10 package. Verify that the replacement maintains the same I²C compatibility and power-on preset behavior.