AD5162BRM2.5-RL7

Overview

The AD5162BRM2.5-RL7 is a dual-channel, 8-bit digital potentiometer with 256 tap positions and a nominal end-to-end resistance of 2.5 kΩ. It operates on a single supply voltage ranging from 2.7 V to 5.5 V, consuming a maximum supply current of 6 µA. The device features volatile wiper memory controlled via a 3-wire SPI interface with a clock frequency up to 25 MHz. It includes a power-on preset function that initializes the wipers to midscale (code 0x80). The component is housed in a compact 10-lead MSOP package and supports an operating temperature range from −40°C to +125°C.

Feature Summary

• Dual-channel architecture with 256 linear tap positions per channel
• SPI-compatible 3-wire serial interface supporting clock frequencies up to 25 MHz
• Power-on preset to midscale for simplified fault recovery
• Low power consumption with 6 µA maximum supply current

Applications

• Systems calibration and permanent factory PCB settings
• Replacement for mechanical trimmers in new designs
• Transducer adjustment for pressure, temperature, and optical sensors
• RF amplifier biasing and gain control

Procurement Notes

Verify the specific suffix 'RL7' against the manufacturer's ordering guide to confirm tape-and-reel packaging quantities. Confirm RoHS compliance status as indicated in official documentation. Ensure the 2.5 kΩ resistance value matches the design requirements, as other variants exist within the AD5162 family.

Selection Notes

Select this variant specifically for its 2.5 kΩ end-to-end resistance; other versions offer 10 kΩ, 50 kΩ, or 100 kΩ options. Consider the volatile memory nature, which requires constant bias or external storage to retain settings during power loss. Verify that the MSOP-10 package dimensions fit the available PCB space.

Part Context

This component belongs to the AD5162 family of dual digital potentiometers manufactured by Analog Devices. It serves as an electronic alternative to mechanical potentiometers, offering precise resistance adjustment through digital commands. The BRM2.5 designation indicates the specific resistance value and package type within the broader product line.

Replacement Considerations

Direct replacements include other AD5162 variants with different resistance values (e.g., AD5162BRMZ10-RL7 for 10 kΩ) if the resistance specification allows modification. Single-channel equivalents like the AD5161 series may be used if only one potentiometer channel is required.