AD5161BRMZ10-RL7

Overview

The AD5161BRMZ10-RL7 is a single-channel, 8-bit digital potentiometer with a nominal end-to-end resistance of 10 kΩ. It features 256 tap positions and operates on a single supply voltage ranging from 2.7 V to 5.5 V. The device supports both SPI and I2C interfaces via a pin-selectable Digital Interface Select (DIS) pin. Key electrical characteristics include a maximum wiper resistance of 120 Ω, a temperature coefficient of 45 ppm/°C, and a typical supply current of 8 μA. It is housed in a compact MSOP-10 package.

Feature Summary

• Pin-selectable SPI or I2C compatible serial interface
• 256-position resolution with linear taper
• Single supply operation from 2.7 V to 5.5 V
• Power-on preset to midscale position

Applications

• Mechanical potentiometer replacement
• Transducer adjustment for pressure, temperature, and optical sensors
• RF amplifier biasing
• Gain control and offset adjustment circuits

Procurement Notes

Verify the specific ordering suffix RL7 corresponds to the required reel packaging quantity. Confirm that the DIS pin configuration matches the intended bus protocol, as this determines the active communication mode. Ensure the 10 kΩ resistance value aligns with the circuit's impedance requirements.

Selection Notes

Select this component when a solid-state alternative to mechanical pots is needed in space-constrained designs. The 10 kΩ value offers a balance between noise performance and drive capability. Consider the MSOP-10 package dimensions if PCB real estate is limited. Verify thermal management needs against the 200°C/W junction-to-ambient thermal resistance.

Part Context

This part belongs to the AD5161 family of 256-position digital potentiometers. The BRMZ suffix indicates the commercial temperature range (-40°C to +125°C) and MSOP-10 package. The '10' denotes the 10 kΩ nominal resistance. The -RL7 suffix specifies the tape and reel packaging format.

Replacement Considerations

Direct replacements within the same family include AD5161BRMZ50 (50 kΩ) and AD5161BRMZ100 (100 kΩ). For dual-channel applications, consider the AD5162 series. Ensure any substitute maintains the same MSOP-10 footprint and pinout compatibility.