AD5260BRUZ20

Digital Potentiometers Overview

The AD5260BRUZ20 is a single-channel, 8-bit digitally controlled variable resistor (digital potentiometer) manufactured by Analog Devices. It features a nominal resistance of 20 kΩ with a low temperature coefficient of 35 ppm/°C and 256 programmable tap positions. The device operates on a single supply from 4.5 V to 16.5 V or a dual supply of ±4.5 V to ±5.5 V, with a separate logic supply (VL) ranging from 2.7 V to 5.5 V. It utilizes a 4-wire SPI-compatible serial interface for data input and includes a power-on midscale preset function. The component is housed in a 14-lead TSSOP package and is rated for operation between -40°C and +85°C.

Digital Potentiometers Feature Summary

• Single-channel digital potentiometer with 256 positions and 20 kΩ nominal resistance.
• SPI-compatible 4-wire serial interface (SDI, SDO, CS, CLK) with daisy-chain capability via SDO.
• Operates on single supply (4.5 V to 16.5 V) or dual supply (±4.5 V to ±5.5 V).
• Power-on reset presets the wiper to midscale (0x80); optional PR pin forces midscale.
• Shutdown mode (SHDN) opens Terminal A and connects Wiper to B for low power consumption.

Digital Potentiometers Applications

• Mechanical potentiometer replacement in industrial systems.
• Instrumentation gain and offset adjustment circuits.
• Programmable voltage-to-current conversion.
• Low-resolution DAC replacement applications.
• Line impedance matching networks.

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current guide, as suffixes may indicate packaging variations such as tube or reel quantities. Confirm that the logic supply voltage requirements align with the controlling microcontroller's I/O levels. Ensure the thermal management strategy accounts for the package's thermal resistance characteristics during high-voltage operation.

Digital Potentiometers Selection Notes

Select this component when a single-channel variable resistor is required with SPI control. The 20 kΩ value is suitable for moderate impedance applications; higher resistance options like 50 kΩ or 200 kΩ are available in the same family if needed. For dual-channel requirements, consider the AD5262 variant. Ensure the system voltage does not exceed the absolute maximum ratings of 17 V across VDD to GND.

Digital Potentiometers Part Context

The AD5260 is part of the AD5260/AD5262 family of 15 V digital potentiometers. It serves as the single-channel counterpart to the dual-channel AD5262. Both devices share identical electrical specifications, interface protocols, and package options, differing only in channel count and register size (8-bit for AD5260 vs. 9-bit for AD5262).

Digital Potentiometers Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the verified source material. Designers should verify pin compatibility and electrical parameters when considering alternative digital potentiometers from other manufacturers.