AD5206BN100

Overview

The AD5206BN100 is a 6-channel, 256-position digitally controlled variable resistor from Analog Devices. It features a fixed A-to-B terminal resistance of 100 kΩ with a nominal 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. Each channel includes a wiper contact tapping the fixed resistor at points determined by an SPI-compatible serial input register. The part utilizes volatile memory and provides power-on midscale preset functionality.

Feature Summary

• Six independently programmable channels with 256 positions each
• 100 kΩ nominal terminal resistance with 700 ppm/°C temperature coefficient
• 3-wire SPI-compatible serial data input interface
• +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
• Programmable filters, delays, and time constants
• Line impedance matching

Procurement Notes

Verify the specific package type (SOIC or TSSOP) required for the BN suffix configuration against the manufacturer's ordering guide. Confirm that the 100 kΩ resistance value aligns with system impedance requirements. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS inputs and internal switch contacts.

Selection Notes

Select this component when six independent digital control channels are required within a single package. The 100 kΩ resistance value suits applications requiring higher impedance levels compared to the 10 kΩ or 50 kΩ variants. Consider the 700 ppm/°C temperature coefficient for thermal stability needs. Verify compatibility with the host microcontroller's SPI clock speeds and voltage levels.

Part Context

This device belongs to the AD5204/AD5206 family of 4- and 6-channel digital potentiometers. The AD5206 specifically provides six channels, whereas the AD5204 offers four. Both share identical electrical characteristics, interface protocols, and package options, differing primarily in channel count and pinout assignments for the additional terminals.

Replacement Considerations

Direct functional substitutes include other 6-channel digital potentiometers from Analog Devices such as the AD840x series, though channel counts may vary. Cross-compatibility requires verifying pinout alignment, resistance tolerance, and serial interface timing specifications.