AD5161BRMZ10

Overview

The AD5161BRMZ10 is a single-channel, 256-position digital potentiometer from Analog Devices. It features an end-to-end resistance of 10 kΩ with a nominal 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 DIS input. The wiper register allows full read/write access, 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 linear taper
• Low power consumption: 8 μA active, <1 μA shutdown
• 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 latest data sheet to confirm packaging type (e.g., reel vs. tube) and temperature grade. Ensure the DIS pin configuration matches the intended bus protocol before integration. Cross-reference the part number with official distributor catalogs to confirm current availability status and lead times.

Selection Notes

Select this component when a single-channel digital potentiometer with low power consumption is required. The 10 kΩ resistance value suits moderate impedance applications. Verify that the system can accommodate the pin-selectable interface by dedicating the DIS pin to either ground (SPI) or VDD (I²C). Consider the ±30% initial tolerance if absolute resistance accuracy is critical without calibration.

Part Context

The AD5161 series includes variants with 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ resistances. The BRMZ10 designation specifically indicates the 10 kΩ version in the MSOP-10 package. Other family members like the AD5162 offer dual channels, while the AD5175 provides non-volatile memory. This model relies on volatile storage for wiper settings.

Replacement Considerations

Direct replacements within the same family include AD5161BRMZ50 (5 kΩ), AD5161BRMZ50 (50 kΩ), and AD5161BRMZ100 (100 kΩ). For dual-channel requirements, consider the AD5162 series. Ensure any substitute maintains the MSOP-10 footprint and compatible voltage/current specifications.