AD5161BRM100-RL7

Overview

The AD5161BRMZ100-RL7 is a single-channel, 8-bit digital potentiometer featuring 256 tap positions and a nominal 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 typical supply current of 8 μA. The device supports both SPI and I²C interfaces via a pin-selectable Digital Interface Select (DIS) pin. Key electrical characteristics include a maximum resistor tolerance of ±30%, a temperature coefficient of 45 ppm/°C, and an operating temperature range of −40°C to +125°C. The wiper settings are volatile and reset to midscale upon power-up.

Feature Summary

• Pin-selectable SPI or I²C compatible serial interface for flexible system integration
• Single channel with 256 programmable tap positions and 100 kΩ nominal resistance
• Compact MSOP-10 package measuring 3 mm × 4.9 mm
• Power-on preset function initializes the wiper to midscale

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 circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the exact resistance value and packaging type. Ensure that the selected variant matches the required interface configuration and thermal specifications for the target application environment.

Selection Notes

Select this component when a single-channel digital adjustment is required with high resolution. The 100 kΩ resistance value suits applications requiring higher impedance nodes. Consider the volatile memory nature of the wiper setting; if non-volatile retention is necessary, alternative models within the family should be evaluated.

Part Context

This part belongs to the AD5161 series of 256-position digital potentiometers manufactured by Analog Devices. The series provides solid-state reliability and superior low temperature coefficient performance compared to mechanical alternatives. The BRMZ suffix indicates the commercial temperature grade and MSOP-10 surface mount package.

Replacement Considerations

Direct replacements within the same family include the AD5161BRMZ50-RL7 (50 kΩ), AD5161BRMZ10-RL7 (10 kΩ), and AD5161BRMZ5-RL7 (5 kΩ). These variants share identical pinouts and functional specifications but differ in nominal resistance values.