AD5206BR50

Overview

The AD5206BR50 is a 6-channel, 256-position digitally controlled variable resistor from Analog Devices. It features a 50 kΩ nominal terminal resistance with a 700 ppm/°C temperature coefficient. The device operates on a single supply of +2.7 V to +5.5 V or dual supplies of ±2.7 V. It utilizes a 3-wire SPI-compatible serial interface for programming. Each channel includes an independent latch holding the resistance value. The part supports power-on midscale preset and optional reset functionality.

Feature Summary

• Six independently programmable channels with 256 positions each
• 50 kΩ nominal end-to-end resistance with linear taper
• 3-wire SPI-compatible serial interface (CS, CLK, SDI)
• +2.7 V to +5.5 V single-supply or ±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 specific package type required, as the AD5206 family is available in 24-lead SOIC and TSSOP packages. Confirm that the 50 kΩ resistance variant matches the design requirements. Check for availability of evaluation boards if hardware testing is planned before final integration.

Selection Notes

Select this component when six independent digital potentiometer channels are needed. Ensure the system supports 3-wire SPI communication. Verify that the 50 kΩ resistance range fits the signal levels and current limits of the application. Consider the 700 ppm/°C temperature coefficient for precision requirements across the -40°C to +85°C operating range.

Part Context

This part belongs to the AD5204/AD5206 family of 4-/6-channel digital potentiometers. The AD5204 offers four channels, while the AD5206 provides six. Both share identical electrical characteristics and interfaces. The 'BR' suffix typically denotes a specific temperature grade or package variant within the Analog Devices portfolio, though the core functionality remains consistent with the general datasheet specifications.

Replacement Considerations

Direct pin-to-pin replacements may include other AD5206 variants with different resistance values (e.g., AD5206BR10 for 10 kΩ). Cross-family alternatives like the AD840x series offer different channel counts but require interface adaptation.