AD5280BRUZ20

Digital Potentiometers Overview

The AD5280BRUZ20 is a single-channel, 256-position digitally controlled variable resistor from Analog Devices. It features a fixed terminal resistance of 20 kΩ with a nominal temperature coefficient of 30 ppm/°C and a wiper resistance of 60 Ω. The device operates on a single supply of +4.5 V to +16.5 V or dual supplies of ±4.5 V to ±5.5 V. It utilizes an I²C-compatible interface for programming and includes power-on midscale preset functionality. The component is housed in a 14-lead TSSOP package and supports an operating temperature range of −40°C to +85°C.

Digital Potentiometers Feature Summary

• Single-channel digital potentiometer with 256 tap positions
• Fixed 20 kΩ terminal resistance with 30 ppm/°C temperature coefficient
• I²C-compatible serial interface with programmable address bits
• Power-on midscale preset and shutdown mode capabilities

Digital Potentiometers Applications

• Multimedia, video, and audio signal processing
• Instrumentation gain and offset adjustment
• Programmable voltage and current sources
• Mechanical potentiometer replacement in compact designs

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact resistance value and packaging configuration. Ensure that the logic supply voltage (VL) requirements are compatible with the system's digital control interface before integration.

Digital Potentiometers Selection Notes

Select this component when a single-channel variable resistor with I²C control is required. The 20 kΩ resistance value offers a balance between bandwidth and power consumption. Consider the AD5282 if dual-channel operation is needed within the same package footprint.

Digital Potentiometers Part Context

This part belongs to the AD5280/AD5282 family of non-volatile-free digital potentiometers. It serves as a direct electronic replacement for mechanical potentiometers in applications requiring remote or automated resistance adjustment without the wear associated with moving parts.

Digital Potentiometers Replacement Considerations

The AD5282BRUZ20 provides equivalent electrical characteristics but includes two channels instead of one. For SPI-based interfaces, the AD5260 series may be considered, though it lacks the I²C compatibility of the AD5280.