AD5248BRMZ100-RL7

Digital Potentiometers Overview

The AD5248BRMZ100-RL7 is a dual, 256-position digital potentiometer from Analog Devices. It features two independent variable resistors with an end-to-end resistance of 100 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 specifications include a temperature coefficient of 35 ppm/°C, a typical power-on settling time of 5 µs, and an operating temperature range from −40°C to +125°C.

Digital Potentiometers Feature Summary

• Dual-channel architecture with 256 tap positions per channel
• I²C-compatible 2-wire serial interface with address decode pins (AD0, AD1)
• Power-on preset to midscale for fault recovery
• Compact 10-lead MSOP package (3 mm × 4.9 mm)

Digital Potentiometers Applications

• Systems calibration and permanent factory PCB settings
• Replacement for mechanical trimmers in new designs
• Gain control and offset adjustment circuits
• RF amplifier biasing

Digital Potentiometers Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm the specific suffix RL7 corresponds to the reel packaging format required for surface-mount assembly processes. Ensure compatibility with existing I²C bus addressing schemes due to the presence of dedicated address pins.

Digital Potentiometers Selection Notes

Select this model for applications requiring precise 100 kΩ resistance adjustment with low power consumption. The inclusion of AD0 and AD1 pins allows multiple units to share a single I²C bus, simplifying system architecture compared to the AD5243 variant. Verify that the 20% nominal resistor tolerance meets the accuracy requirements of the target circuit.

Digital Potentiometers Part Context

This component belongs to the AD5248 family of dual digital potentiometers. It shares the same functional block diagram and electrical characteristics as other resistance variants within the series, such as the 2.5 kΩ, 10 kΩ, and 50 kΩ versions. The primary distinction lies in the nominal end-to-end resistance value, which determines the specific application suitability for impedance matching or voltage division tasks.

Digital Potentiometers Replacement Considerations

The AD5243BRMZ100-RL7 serves as a direct functional substitute if the additional address decode pins are not utilized in the design. Both devices share identical pinouts for power, data, and resistor terminals, differing only in the availability of AD0 and AD1 connections.