AD5161BRMZ5-RL7

Overview

The AD5161BRMZ5-RL7 is a single-channel, 8-bit digital potentiometer with a nominal end-to-end resistance of 5 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 typical supply current of 3 µA, a shutdown current of 1 µA, and a resistance temperature coefficient of 45 ppm/°C. It is housed in a compact MSOP-10 package.

Feature Summary

• Pin-selectable SPI or I2C compatible serial interface
• Single channel with 256 programmable wiper positions
• Nominal resistance of 5 kΩ with ±30% tolerance
• Low power consumption: 3 µA active, 1 µA shutdown

Applications

• Mechanical potentiometer replacement in new designs
• Transducer adjustment for pressure, temperature, position, chemical, and optical sensors
• RF amplifier biasing
• Gain control and offset adjustment

Procurement Notes

Verify the specific ordering suffix RL7 against the manufacturer's official documentation to confirm reel packaging specifications. Ensure the DIS pin configuration matches the intended bus protocol (SPI or I2C) during PCB layout. Cross-reference the MSOP-10 footprint dimensions with the latest outline drawing to guarantee mechanical compatibility.

Selection Notes

Select this component when a single-channel variable resistor with 8-bit resolution is required. The 5 kΩ resistance value suits applications needing moderate current handling without excessive power dissipation. Verify that the system logic levels are compatible with the 2.7 V to 5.5 V operating range. Consider the MSOP-10 package size constraints if space is limited.

Part Context

This part belongs to the AD5161 family of 256-position digital potentiometers. Variants within the family differ primarily by nominal resistance values (5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ) and package types. The BRMZ5 designation specifically identifies the 5 kΩ version in the MSOP-10 package.

Replacement Considerations

Direct substitutes include other AD5161 variants with different resistance values (e.g., AD5161BRMZ10) if the resistance change is acceptable. For dual-channel requirements, the AD5162 series may be considered, though it lacks I2C support in some revisions. Verify pinout compatibility before substitution.