AD5220BRMZ100

Overview

The AD5220BRMZ100 is a single-channel, 7-bit digitally controlled variable resistor (digital potentiometer) manufactured by Analog Devices. It features a nominal resistance of 100 kΩ with 128 tap positions and operates on a supply voltage range of 2.7 V to 5.5 V. The device utilizes a standard three-wire serial interface consisting of Clock (CLK), Chip Select (CS), and Up/Down (U/D) pins for wiper control. Packaged in an 8-lead Mini Small Outline Package (MSOP), it supports both rheostat and potentiometer divider modes within an operating temperature range of -40°C to +85°C.

Feature Summary

• Seven-bit resolution providing 128 discrete wiper positions
• Three-wire serial interface compatible with standard logic families
• Nominal resistance options including 100 kΩ with ±30% tolerance
• Low power consumption with typical supply current of 15 µA

Applications

• Programmable gain amplifiers
• Variable voltage references
• Digital potentiometer replacement in analog signal paths
• Audio volume control circuits

Procurement Notes

Verify the specific suffix 'MZ' corresponds to the MSOP package option RM-8 when sourcing. Confirm that the '100' designation matches the required 100 kΩ terminal resistance. Ensure compliance with RoHS standards if applicable to the manufacturing lot. Cross-reference the datasheet revision A specifications against the component marking code DQC or #DQC found on the package top.

Selection Notes

Select this model when a 100 kΩ end-to-end resistance is required for the application circuit. The 7-bit resolution offers 128 steps, which may be insufficient for high-precision applications requiring finer adjustment compared to 8-bit or higher-resolution devices. Verify that the 800 ppm/°C temperature coefficient of the absolute resistance meets the thermal stability requirements, as the divider mode temperature coefficient improves to 20 ppm/°C.

Part Context

This component belongs to the AD5220 family of single-channel digital potentiometers. Other variants in the series include models with 10 kΩ and 50 kΩ resistances, such as the AD5220BRMZ10 and AD5220BRMZ50. Automotive qualified versions are available under the AD5220W prefix. All variants share the same 7-bit architecture and serial interface timing characteristics.

Replacement Considerations

Direct pin-compatible replacements within the same family include AD5220BRMZ10 (10 kΩ) and AD5220BRMZ50 (50 kΩ). When substituting, verify that the lower or higher resistance values do not exceed the maximum current limits of 5 mA between the wiper and terminal B.