AD5243BRM10

Digital Potentiometers Overview

The AD5243BRM10 is a dual-channel, 8-bit digital potentiometer from Analog Devices. It features two independent 256-position wipers with an end-to-end resistance of 10 kΩ and a linear taper. 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. Key electrical characteristics include a temperature coefficient of 35 ppm/°C, a typical power-on settling time of 5 µs, and a guaranteed monotonic operation across the full operating temperature range of −40°C to +125°C.

Digital Potentiometers Feature Summary

• Dual-channel architecture with 256 discrete tap positions per channel
• I²C-compatible 2-wire serial interface for digital control
• Linear resistance taper with 10 kΩ nominal end-to-end resistance
• Low power consumption with 6 µA maximum supply current
• Power-on preset to midscale position for fault recovery

Digital Potentiometers Applications

• Systems calibration and permanent factory PCB settings
• Replacement for mechanical trimmers in new designs
• Transducer adjustment for pressure, temperature, and optical sensors
• RF amplifier biasing and gain control circuits
• Electronics level settings and offset adjustments

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and tape/reel specifications. Confirm that the component meets required RoHS compliance standards for the target application region. Ensure the design accounts for the volatile memory nature of the wiper settings, which require continuous power or external retention strategies to maintain resistance values during power cycles.

Digital Potentiometers Selection Notes

Select this component when a dual-channel digital solution is required within a compact MSOP-10 footprint. The 10 kΩ resistance value offers a balance between noise performance and drive capability. Consider the AD5248 variant if multiple devices must share a single I²C bus using hardware address pins (AD0/AD1). Verify that the system can tolerate the volatile storage mechanism, as settings are lost upon power removal unless a constant bias is maintained.

Digital Potentiometers Part Context

The AD5243 belongs to the AD5243/AD5248 family of high-performance digital potentiometers. It serves as the dual-channel counterpart to single-channel variants and shares the same core architecture as the AD5248, except it lacks the dedicated address decode pins. This part is designed to replace traditional mechanical potentiometers in applications requiring programmable resistance adjustments via digital interfaces.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same series include other resistance variants such as AD5243BRMZ2.5, AD5243BRMZ50, and AD5243BRMZ100. For multi-device bus configurations, the AD5248 provides identical functionality with added address decoding capabilities.