AD5243BRMZ50

Digital Potentiometers Overview

The AD5243BRMZ50 is a dual-channel, 8-bit digital potentiometer manufactured by Analog Devices. It features two independent 256-position variable resistors with a nominal end-to-end resistance of 50 kΩ and a tolerance of ±20%. 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-up settling time of 5 µs, and operation across an extended temperature range of −40°C to +125°C.

Digital Potentiometers Feature Summary

• Dual-channel architecture providing two independent 256-position digital potentiometers in a compact package.
• I²C-compatible 2-wire serial interface supporting clock frequencies up to 400 kHz for register control.
• Power-on preset function automatically sets the wiper to midscale upon initialization.
• Low power consumption with a maximum supply current of 6 µA at 5 V.

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 '50' confirms the 50 kΩ resistance value when sourcing. Confirm the MSOP-10 package dimensions match the design footprint. Ensure the I²C bus configuration supports the required address decoding for the target application.

Digital Potentiometers Selection Notes

Select this component for applications requiring dual-channel adjustment with linear taper. The 50 kΩ resistance value is suitable for moderate impedance circuits. Verify that the system power supply remains within the 2.7 V to 5.5 V range to ensure proper operation and adherence to absolute maximum ratings.

Digital Potentiometers Part Context

This part belongs to the AD5243 family of high-performance digital potentiometers. It serves as the dual-channel variant, whereas the AD5248 offers additional address decode pins (AD0, AD1) for multi-device bus sharing. Both share identical core electrical specifications and pinouts, differing primarily in addressing capabilities.

Digital Potentiometers Replacement Considerations

The AD5248BRMZ50 is a functional substitute with added address pins. Other AD5243 variants with different resistance values (e.g., AD5243BRMZ10 for 10 kΩ) are pin-compatible but require circuit re-evaluation for impedance matching.