AD5206BRU50-REEL

Overview

The AD5206BRU50-REEL is a six-channel, 256-position digitally controlled variable resistor from Analog Devices. It operates on a single supply of +2.7 V to +5.5 V or dual supplies of ±2.3 V to ±2.7 V. The device features a 50 kΩ nominal terminal resistance with a temperature coefficient of 700 ppm/°C. Control is managed via a 3-wire SPI-compatible serial interface using an 11-bit data word. Each channel includes an independent latch for resistance storage and supports power-on midscale preset functionality.

Feature Summary

• Six independently programmable channels with 256 positions
• 50 kΩ nominal end-to-end resistance (±30% tolerance)
• 3-wire SPI-compatible serial interface (CS, CLK, SDI)
• +2.7 V to +5.5 V single-supply or ±2.3 V to ±2.7 V dual-supply operation

Applications

• Mechanical potentiometer replacement
• Instrumentation gain and offset adjustment
• Programmable voltage-to-current conversion
• Line impedance matching

Procurement Notes

Verify the package type corresponds to the RU suffix (24-lead TSSOP) rather than the RZ suffix (SOIC). Confirm the REEL suffix indicates tape-and-reel packaging. Ensure the specific revision matches current manufacturing standards as specifications are subject to change without notice.

Selection Notes

Select this model for applications requiring six channels of digital resistance control. The 50 kΩ value suits moderate impedance circuits. Verify that the 700 ppm/°C temperature coefficient meets thermal stability requirements. Ensure the system logic levels align with the specified VIH and VIL thresholds for reliable serial communication.

Part Context

This component belongs to the AD5204/AD5206 family of 4-/6-channel digital potentiometers. The AD5206 variant specifically provides six channels compared to the four in the AD5204. Both share identical electrical characteristics, serial protocols, and package options, differing only in channel count and address decoding for RDAC 5 and RDAC 6.

Replacement Considerations

Direct functional equivalents within the same family include the AD5206BRZ50 (SOIC package) or other resistance variants like AD5206BRU10 (10 kΩ) and AD5206BRU100 (100 kΩ). Cross-family replacements such as the AD840x series offer different channel counts but require interface verification.