AD5161BRM50-RL7

Overview

The AD5161BRM50-RL7 is a single-channel, 8-bit digital potentiometer with a nominal end-to-end resistance of 50 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 a pin-selectable interface for either SPI or I2C communication. Key electrical parameters include a maximum supply current of 8 µA, a resistance temperature coefficient of 45 ppm/°C, and an operating temperature range from −40°C to +125°C. The component is housed in a compact MSOP-10 package.

Feature Summary

• Pin-selectable SPI or I2C compatible serial interface
• 256-position resolution with 50 kΩ nominal resistance
• Low power consumption with 8 µA typical supply current
• Power-on preset to midscale position

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 corresponds to the required reel packaging configuration. Confirm that the BRM variant matches the intended MSOP-10 package and industrial temperature grade requirements for the target application environment.

Selection Notes

Select this component when a single-channel digital potentiometer with 50 kΩ resistance is required. Ensure the system design accommodates the pin-selectable interface by fixing the DIS pin state. Verify that the 30% resistor tolerance meets the circuit accuracy specifications.

Part Context

This part belongs to the AD5161 family of 256-position digital potentiometers. The 'B' indicates the industrial temperature range, 'RM' specifies the MSOP-10 package, and '50' denotes the 50 kΩ resistance value. The 'RL7' suffix identifies the tape and reel packaging format.

Replacement Considerations

Direct functional replacements within the same series include other AD5161 variants with different resistance values (e.g., AD5161BRMZ10) or packages. Cross-family alternatives like the AD5170 offer I2C-only interfaces but lack the pin-selectable feature.