AD5206BR100-REEL

Overview

The AD5206BR100-REEL is a six-channel, 8-bit digital potentiometer from Analog Devices. It provides 256 programmable tap positions per channel with a nominal terminal resistance of 100 kΩ and a temperature coefficient of 700 ppm/°C. The device operates on a single supply of +2.7 V to +5.5 V or dual supplies of ±2.7 V. It features a 3-wire SPI-compatible serial interface for data input and includes a power-on midscale preset function. Each channel contains an independent variable resistor latch updated via the serial register.

Feature Summary

• Six independently programmable channels with 256-position resolution
• Nominal resistance of 100 kΩ with linear taper
• 3-wire SPI-compatible serial interface (CS, CLK, SDI)
• Power-on midscale preset and hardware reset pin

Applications

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

Procurement Notes

Verify that the REEL suffix indicates tape-and-reel packaging suitable for automated assembly. Confirm the BR suffix corresponds to the industrial temperature range (-40°C to +85°C) and the specific package type required for the design. Ensure the 100 kΩ resistance value matches the circuit requirements.

Selection Notes

Select this component when six independent digital resistors are needed in a single package. The 100 kΩ value is suitable for lower current applications compared to the 10 kΩ variant. Consider the 700 ppm/°C temperature coefficient for thermal stability requirements. The device lacks non-volatile memory, requiring state retention logic if power loss occurs.

Part Context

This part belongs to the AD5204/AD5206 family of 4- and 6-channel digital potentiometers. The AD5206 specifically offers six channels, whereas the AD5204 offers four. The '100' designation specifies the 100 kΩ end-to-end resistance. The 'REEL' suffix denotes bulk tape-and-reel packaging for high-volume manufacturing.

Replacement Considerations

Direct functional replacements within the same family include the AD5206BRU (tube packaging) or other resistance variants like the AD5206BR50 (50 kΩ). Cross-family replacements such as the AD840x series offer different channel counts or non-volatile options but require interface verification.