AD5207BRU10

Overview

The AD5207BRU10 is a dual-channel, 8-bit digital potentiometer IC from Analog Devices. It provides two independent variable resistors with 256 tap positions and a nominal resistance of 10 kΩ. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V or a dual supply of ±2.2 V to ±2.7 V. Control is achieved via a standard 3-wire SPI-compatible serial interface (SDI, CLK, CS). Key electrical characteristics include a wiper resistance of up to 100 Ω, a temperature coefficient of 500 ppm/°C, and a shutdown current of less than 5 µA when the SHDN pin is active. The unit is housed in a TSSOP-14 package.

Feature Summary

• Dual-channel architecture with 256 programmable positions per channel
• 10 kΩ nominal end-to-end resistance with ±30% tolerance
• 3-Wire SPI-compatible serial control interface with daisy-chain capability
• Power-down mode consuming less than 5 µA via active-low SHDN pin

Applications

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

Procurement Notes

Verify the specific ordering suffix for packaging requirements, such as -REEL7 for tape and reel quantities. Confirm that the 10 kΩ variant matches the circuit design needs, as other resistance values like 50 kΩ and 100 kΩ are available within the same family. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS input structure.

Selection Notes

Select this component when a dual-channel solution is required to replace mechanical pots in space-constrained designs. The 10 kΩ value offers a bandwidth of approximately 600 kHz at half scale. Consider the 500 ppm/°C temperature coefficient for thermal stability requirements. Verify that the 2.7 V minimum supply voltage aligns with the system's power rails.

Part Context

This part belongs to the AD5207 series of 2-channel digital potentiometers. It serves as a drop-in replacement for similar devices like the AD8402 due to compatible addressing logic. The BRU10 designation specifically indicates the industrial temperature range (-40°C to +125°C) and the 10 kΩ resistance value.

Replacement Considerations

The AD8402 is noted as a compatible single-channel alternative with similar addressing. For direct dual-channel replacements, verify pin compatibility with other AD52xx series parts. Note that non-volatile memory variants like the AD5231 require different programming interfaces.