AD5162WBRMZ100-RL7

Overview

The AD5162WBRMZ100-RL7 is a dual-channel, 8-bit digital potentiometer featuring 256 tap positions and an end-to-end resistance of 100 kΩ. It operates on a single supply voltage ranging from 2.7 V to 5.5 V with a maximum supply current of 6 µA. The device utilizes a standard SPI-compatible 3-wire serial interface for full read/write access to the wiper registers. Key electrical characteristics include a nominal resistor tolerance of ±20%, a temperature coefficient of 35 ppm/°C, and a typical settling time of 2 µs. It 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 (SDI, CLK, CS)
• Low power consumption: 6 µA maximum supply current
• AEC-Q100 qualified for automotive applications
• Power-on preset to midscale position

Applications

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

Procurement Notes

Verify the 'W' suffix indicates AEC-Q100 automotive qualification status as specified in the datasheet ordering guide. Confirm the '100' designation corresponds to the 100 kΩ end-to-end resistance value. Ensure the 'RL7' suffix matches the required reel packaging format for surface-mount assembly processes.

Selection Notes

Select this component when a dual-channel variable resistor with low temperature drift is required. The 100 kΩ resistance value suits high-impedance signal paths. Verify that the system logic levels are compatible with the SPI interface at the chosen supply voltage between 2.7 V and 5.5 V. Consider the volatile memory nature if power retention of settings is critical without external backup.

Part Context

This part belongs to the AD5162 family of dual digital potentiometers. The 'W' variant specifically denotes automotive-grade qualification under AEC-Q100 standards. Other variants in the series offer different resistance values such as 2.5 kΩ, 10 kΩ, and 50 kΩ, but share the same pinout and functional specifications.

Replacement Considerations

Direct replacements within the AD5162 family include AD5162BRMZ100-RL7 (standard grade) or AD5162BRMZ10-RL7 (10 kΩ). Cross-family substitutes like the AD524x series may require software adaptation due to different register maps.