AD5207BRU10-REEL7

Overview

The AD5207BRU10-REEL7 is a dual-channel, 8-bit digital potentiometer with a nominal resistance of 10 kΩ. It features 256 tap positions controlled via a 3-wire SPI-compatible serial interface. The device operates on a single supply from 2.7 V to 5.5 V or a dual supply of ±2.2 V to ±2.7 V. Key electrical characteristics include a maximum wiper resistance of 100 Ω, a temperature coefficient of 500 ppm/°C, and a shutdown current of less than 5 µA. It is housed in a 14-pin TSSOP package and functions over an extended industrial temperature range of –40°C to +125°C.

Feature Summary

• Dual-channel architecture with independent 8-bit RDAC latches for each channel.
• 3-Wire SPI-compatible serial interface supporting daisy-chaining capabilities.
• Power-down mode reduces current consumption to under 5 µA via the SHDN pin.
• Midscale preset function activates automatically during power-on reset.

Applications

• Mechanical potentiometer replacement in space-constrained designs.
• Stereo channel audio level control applications.
• Instrumentation gain and offset adjustment circuits.
• Programmable voltage-to-current conversion systems.
• Automotive electronics adjustment modules.

Procurement Notes

Verify the specific resistance value suffix (10, 50, or 100) when ordering, as the base model number does not indicate the terminal resistance. Confirm that the RU-14 packaging format meets the assembly requirements. Ensure the design accounts for the volatile nature of the wiper position data, which resets to midscale upon power loss.

Selection Notes

Select this component when a dual-channel solution is required within a 14-pin footprint. The 10 kΩ variant offers a bandwidth of 600 kHz at half scale, suitable for moderate-speed signal processing. Consider the 100 Ω wiper resistance in low-resistance circuit designs. Verify compatibility with the system's logic voltage levels, as the interface supports standard CMOS/TTL inputs across the operating supply range.

Part Context

This part belongs to the AD5207 family of 256-position digital potentiometers. It serves as a direct drop-in replacement for similar devices like the AD8402 due to compatible addressing protocols. The BRU designation indicates the industrial temperature grade and TSSOP-14 package type. Other variants in the series include 50 kΩ and 100 kΩ resistance options.

Replacement Considerations

The AD8402 is a documented compatible substitute offering similar functionality and interface compatibility. When replacing mechanical potentiometers, ensure the circuit limits current between the wiper and B terminal to below 5 mA in the zero-scale state to prevent switch degradation.