AD5245BRJ50-RL7

Digital Potentiometers Overview

The AD5245BRJ50-RL7 is a single-channel, 256-position I²C-compatible digital potentiometer manufactured by Analog Devices. It features a nominal end-to-end resistance of 50 kΩ with a ±30% tolerance and a temperature coefficient of 45 ppm/°C. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V, consuming a typical supply current of 8 µA. It utilizes an SOT-23-8 package (2.9 mm × 3 mm) and includes full read/write capability for the wiper register. Power-on preset functionality initializes the wiper to midscale, and an additional address pin (AD0) allows two devices to share the same bus.

Digital Potentiometers Feature Summary

• 256-position adjustment with 50 kΩ nominal end-to-end resistance
• I²C-compatible serial interface with full read/write wiper register access
• Compact SOT-23-8 package (2.9 mm × 3 mm)
• Low power consumption: 8 µA typical supply current at 5 V

Digital Potentiometers Applications

• Mechanical potentiometer replacement in new designs
• LCD panel VCOM adjustment
• Transducer adjustment for pressure, temperature, position, chemical, and optical sensors
• RF amplifier biasing
• Gain control and offset adjustment

Digital Potentiometers Procurement Notes

Verify the specific resistance value suffix in the part number to ensure it matches the required circuit impedance. Confirm that the ordering suffix corresponds to the correct tape and reel packaging format. Check for RoHS compliance status as indicated in the manufacturer's documentation. Ensure the operating environment falls within the specified -40°C to +125°C temperature range.

Digital Potentiometers Selection Notes

Select this component when a compact, solid-state alternative to mechanical potentiometers is needed. The 50 kΩ resistance value suits applications requiring moderate current handling without excessive power dissipation. The I²C interface simplifies microcontroller integration compared to parallel or SPI interfaces. Consider the 8-bit resolution (256 positions) against application precision requirements.

Digital Potentiometers Part Context

This part belongs to the AD5245 family of 256-position digital potentiometers. Other variants in the series include different end-to-end resistances such as 5 kΩ, 10 kΩ, and 100 kΩ. The BRJZ suffix indicates the commercial temperature grade and SOT-23-8 package type. The RL7 suffix denotes the reel packaging configuration used for surface mount assembly.

Digital Potentiometers Replacement Considerations

Direct replacements within the AD5245 family require matching the resistance value (e.g., AD5245BRJ10 for 10 kΩ). Verify that substitute components support the same I²C addressing scheme and package dimensions. Ensure thermal characteristics and absolute maximum ratings are compatible with the existing design constraints.