AD5206BR50-REEL

Overview

The AD5206BR50-REEL is a six-channel, 256-position digitally controlled variable resistor from Analog Devices. It operates on a single +2.7 V to +5.5 V supply or ±2.7 V dual supply. The device features a 3-wire SPI-compatible serial interface for programming resistance values between the wiper and terminal A or B. Nominal end-to-end resistances are available in 10 kΩ, 50 kΩ, and 100 kΩ options, with a nominal temperature coefficient of 700 ppm/°C. Each channel includes an independent latch holding the programmed value, and the unit powers on to a midscale preset.

Feature Summary

• Six independently programmable channels with 256 positions each
• SPI-compatible 3-wire serial interface (CS, CLK, SDI)
• Power-on midscale preset for fault recovery
• Available in 10 kΩ, 50 kΩ, and 100 kΩ terminal resistance values

Applications

• Mechanical potentiometer replacement
• Instrumentation gain and offset adjustment
• Programmable voltage-to-current conversion
• Programmable filters, delays, and time constants
• Line impedance matching

Procurement Notes

Verify the ordering suffix 'REEL' indicates tape-and-reel packaging rather than tube. Confirm the middle digits '50' correspond to the 50 kΩ nominal resistance variant. Ensure the package type matches the required surface-mount footprint, typically TSSOP or SOIC for this series.

Selection Notes

Select based on the required number of channels; use AD5204 for four channels or AD5206 for six. Choose the resistance value (10k, 50k, 100k) according to circuit load requirements. Verify power supply constraints, as the device supports both single-supply (+2.7V to +5.5V) and dual-supply (±2.7V) operation.

Part Context

This component belongs to the AD5204/AD5206 family of digital potentiometers. The AD5206 specifically provides six channels, whereas the AD5204 offers four. Both share identical electrical characteristics, serial interfaces, and package options, differing only in channel count and address decoding logic for channels 5 and 6.

Replacement Considerations

Direct pin-compatible substitutes within the same family include the AD5204 (4-channel) if fewer channels are needed. Other Analog Devices digital potentiometers like the AD840x series offer different channel counts but may require interface adjustments.