AD5161BRM10-RL7

Overview

The AD5161BRM10-RL7 is a single-channel, 256-position digital potentiometer from Analog Devices. It features a nominal end-to-end resistance of 10 kΩ with a tolerance of ±30% and a temperature coefficient of 45 ppm/°C. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V, consuming a typical supply current of 8 μA. It supports both SPI and I²C interfaces via a pin-selectable Digital Interface Select (DIS) pin. The wiper settings are volatile, and the unit is housed in a compact MSOP-10 package.

Feature Summary

• Pin-selectable SPI or I²C compatible digital interface
• 256-position resolution with 10 kΩ nominal resistance
• Low power consumption: 8 μA typical supply current
• Wide operating temperature range: -40°C to +125°C

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 against the manufacturer's official documentation to confirm the reel quantity and packaging type. Ensure the DIS pin configuration matches the intended bus protocol before integration. Cross-reference the electrical characteristics table for the 10 kΩ version to validate performance parameters under specific operating conditions.

Selection Notes

Select this component when a solid-state alternative to mechanical potentiometers is required for applications needing 256 adjustment positions. The 10 kΩ resistance value is suitable for general-purpose signal conditioning. Consider the volatile memory nature of the wiper register; if non-volatile storage is required, a different model within the family must be selected. Verify that the system logic levels are compatible with the 2.7 V to 5.5 V supply range.

Part Context

This part belongs to the AD5161 series of 256-position digital potentiometers. The 'BRM' designation indicates the industrial temperature grade (-40°C to +125°C) and the MSOP-10 package. The '10' suffix specifies the 10 kΩ nominal resistance value. The '-RL7' suffix typically denotes tape and reel packaging, though exact quantities should be confirmed via the distributor or manufacturer datasheet.

Replacement Considerations

Direct replacements within the same family include other resistance variants such as AD5161BRM5-RL7 (5 kΩ), AD5161BRM50-RL7 (50 kΩ), and AD5161BRM100-RL7 (100 kΩ). These parts share identical pinouts, interfaces, and electrical characteristics except for the nominal resistance value.