AD5206BN50

Overview

The AD5206BN50 is a six-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 ±2.3 V to ±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 is housed in a 24-lead TSSOP package and functions over an industrial temperature range of −40°C to +85°C.

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)
• Power-on midscale preset for fault recovery

Applications

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

Procurement Notes

Verify the specific ordering suffix BN50 against the manufacturer's current ordering guide to confirm package type and tape/reel specifications. Confirm availability status as legacy parts may have limited production runs. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS input structure.

Selection Notes

Select this model when six-channel resolution is required within a compact 24-lead footprint. The 50 kΩ resistance value offers a balance between power consumption and noise performance compared to lower resistance options. Verify that the system voltage falls within the 2.7 V to 5.5 V single-supply range or ±2.7 V dual-supply range for optimal operation.

Part Context

This component belongs to the AD5204/AD5206 family of digital potentiometers. While the AD5204 provides four channels, the AD5206 extends this to six channels using the same control logic and pinout architecture. Both share identical electrical characteristics regarding linearity, bandwidth, and interface timing, differing primarily in channel count and address decoding capabilities.

Replacement Considerations

Direct functional substitutes include other 6-channel digital potentiometers from Analog Devices such as the AD840x series, though channel counts and interfaces may vary. Cross-compatibility requires verifying pin assignments, supply voltage ranges, and serial protocol compatibility before integration into existing designs.