AD5206BN10

Overview

The AD5206BN10 is a six-channel, 256-position digitally controlled variable resistor from Analog Devices. It features a nominal terminal resistance of 10 kΩ with 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. Each channel includes an independent latch updated via a 3-wire SPI-compatible serial interface. The part utilizes a 24-lead TSSOP package and guarantees operation within the extended industrial temperature range of −40°C to +85°C.

Feature Summary

• Six independently programmable channels with 256 positions each
• 10 kΩ nominal end-to-end resistance with 700 ppm/°C temperature coefficient
• 3-wire SPI-compatible serial data input for digital control
• Power-on midscale preset capability for fault recovery

Applications

• Mechanical potentiometer replacement in embedded systems
• Instrumentation gain and offset adjustment
• Programmable voltage-to-current conversion circuits
• Line impedance matching applications

Procurement Notes

Verify the specific ordering suffix BN10 against the manufacturer's current ordering guide to confirm package type and tape/reel specifications. Confirm that the 10 kΩ resistance variant matches the system requirements, as other values like 50 kΩ and 100 kΩ are available in the same family. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS inputs.

Selection Notes

Select this component when six independent digital potentiometer channels are required in a compact surface-mount footprint. The 10 kΩ resistance value offers a bandwidth of approximately 721 kHz at 2.7 V single-supply operation. Consider the 700 ppm/°C temperature coefficient for thermal stability; if lower drift is needed, utilize the potentiometer divider mode which reduces drift to 15 ppm/°C. Verify that the 3-wire serial interface timing meets the microcontroller's clock speed capabilities.

Part Context

The AD5206 is part of the AD5204/AD5206 family of 4-/6-channel digital potentiometers. While the AD5204 provides four channels, the AD5206 extends this to six channels using the same 24-lead pinout architecture. Both devices share identical electrical characteristics, serial interface protocols, and power supply ranges, differing primarily in the number of accessible RDAC latches and address decoding bits.

Replacement Considerations

Direct functional replacements include other 6-channel digital potentiometers with SPI interfaces and similar voltage ranges. Check for pin-compatible alternatives if board space is constrained. Note that non-volatile memory variants require different initialization sequences and may have different update speeds.