AD5242BRUZ1M-REEL7

Digital Potentiometers Overview

The AD5242BRUZ1M-REEL7 is a dual-channel, 8-bit digital potentiometer from Analog Devices. It provides two independent variable resistors with 256 programmable positions and nominal end-to-end resistance values of 10 kΩ, 100 kΩ, or 1 MΩ. The device operates on a single supply of 2.7 V to 5.5 V or dual supplies of ±2.7 V. It features an I²C-compatible serial interface for wiper position control and includes two additional programmable logic outputs (O1, O2). Key electrical parameters include a maximum wiper resistance of 120 Ω, a nominal temperature coefficient of 30 ppm/°C, and a power-on midscale preset. The component is housed in a 14-lead TSSOP package.

Digital Potentiometers Feature Summary

• Dual-channel architecture with 256-position resolution and 1% channel-to-channel matching tolerance.
• I²C-compatible 2-wire serial interface with readback capability and four selectable target addresses via AD0/AD1 pins.
• Integrated internal power-on midscale preset and self-contained shutdown feature for low-power states.
• Two extra programmable push-pull logic outputs (O1, O2) capable of driving digital loads.

Digital Potentiometers Applications

• Multimedia, video, and audio signal processing.
• Instrumentation gain and offset adjustment circuits.
• Programmable voltage-to-current conversion stages.
• Line impedance matching networks.
• Replacement for mechanical potentiometers in embedded systems.

Digital Potentiometers Procurement Notes

Verify the specific resistance value suffix (e.g., BRZ10, BRZ100, BRZ1M) as the base model covers multiple options. Confirm the REEL7 packaging designation matches the required tape-and-reel quantity. Ensure the ordering suffix corresponds to the exact temperature range and package variant specified in the design requirements.

Digital Potentiometers Selection Notes

Select based on the required nominal resistance (10 kΩ, 100 kΩ, or 1 MΩ) which impacts bandwidth and settling time. Consider the 120 Ω maximum wiper resistance when calculating precision in rheostat mode. Verify that the I²C bus speed does not exceed 400 kHz and that the system voltage aligns with the 2.7 V to 5.5 V operating range.

Digital Potentiometers Part Context

This component belongs to the AD5241/AD5242 family of I²C-compatible digital potentiometers. The AD5242 variant specifically offers dual channels within a single package, whereas the AD5241 is single-channel. Both share identical pinouts for their respective channel counts and utilize the same thin-film resistor technology for stability.

Digital Potentiometers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-reference with other ADI digital potentiometer families only if interface protocols and pin configurations are verified compatible.

Digital Potentiometers FAQ

What is the default wiper position upon power-up?

The wiper position defaults to midscale at system power-on due to the internal power-on preset feature.

How many devices can be addressed on a single I²C bus?

Up to four devices can be connected to one bus, determined by the logic states of the AD0 and AD1 address pins.

What is the function of the SHDN pin?

The SHDN pin is active-low; it asynchronously connects the wiper to Terminal B and opens Terminal A, resulting in near-zero power consumption while maintaining latch contents.