AD5207BRUZ100-R7

Overview

The AD5207BRUZ100-R7 is a dual-channel, 8-bit digital potentiometer IC manufactured by Analog Devices. It features two independent variable resistors with a nominal end-to-end resistance of 100 kΩ and 256 tap positions. 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 nominal temperature coefficient of 500 ppm/°C, a maximum wiper resistance of 100 Ω, and a shutdown current of less than 5 µA when the SHDN pin is active.

Feature Summary

• Dual-channel architecture with 256 programmable positions per channel
• 100 kΩ nominal resistance with ±30% tolerance and 500 ppm/°C temperature coefficient
• 3-wire SPI-compatible serial interface supporting daisy-chaining via SDO output
• Power-down mode with SHDN pin achieving less than 5 µA shutdown current

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 resistance value suffix in the part number; '100' indicates 100 kΩ. Confirm the package type RU-14 corresponds to TSSOP-14. Check RoHS compliance status as it varies by manufacturing date code. Ensure the operating environment stays within the specified -40°C to +125°C industrial temperature range for guaranteed performance.

Selection Notes

Select this component when a dual-channel digital solution is required with high resistance values up to 100 kΩ. The 8-bit resolution provides 256 steps, suitable for applications not requiring fine granularity. Consider the 500 ppm/°C temperature coefficient for thermal stability requirements. Verify that the 3-wire serial interface matches the host controller's available GPIO pins.

Part Context

This part belongs to the AD5207 family of 2-channel digital potentiometers. Variants differ primarily by the nominal resistance value indicated in the ordering suffix: BRU10 (10 kΩ), BRU50 (50 kΩ), and BRU100 (100 kΩ). All variants share the same TSSOP-14 package, pinout, and electrical interface specifications.

Replacement Considerations

The AD8402 is a single-channel alternative with similar interface characteristics. For drop-in replacement compatibility regarding address bits, the datasheet notes similarity to the AD8402 series, though channel count differs. No direct multi-channel substitutes are listed in the provided documentation.