AD5220BRMZ50

Overview

The AD5220BRMZ50 is a single-channel, 7-bit digital potentiometer from Analog Devices, housed in an 8-lead MSOP package. It features a nominal resistance of 50 kΩ with ±30% tolerance and a temperature coefficient of 800 ppm/°C. The device operates on a 2.7 V to 5.5 V supply and draws 15 µA typical current. It utilizes a volatile UP/DOWN counter interface for wiper control, offering 128 tap positions. Key electrical characteristics include a wiper resistance of 40 Ω to 100 Ω and a bandwidth of 142 kHz at the 50 kΩ setting.

Feature Summary

• 7-bit resolution providing 128 distinct wiper positions
• Volatile memory retains settings only during power
• Simple serial interface using Clock, Chip Select, and Up/Down pins
• Linear taper with 50 kΩ nominal end-to-end resistance

Applications

• Programmable gain amplifiers
• Voltage divider adjustments
• Variable resistor replacement in rheostat mode

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via official documentation. Check for automotive-grade variants if operating conditions require specific reliability standards beyond commercial specifications.

Selection Notes

Select this model for applications requiring a single channel with 128 adjustment steps. Ensure the system supports volatile storage as data is lost upon power cycle. Verify that the 800 ppm/°C temperature coefficient meets circuit stability requirements across the -40°C to +85°C operating range.

Part Context

This component belongs to the AD5220 family of digital potentiometers. The BRMZ suffix indicates a commercial temperature range (-40°C to +85°C), SOIC/MSOP package type, and 50 kΩ resistance value. Other variants exist with different resistance values and packaging options within the same functional series.

Replacement Considerations

Direct substitutes include other AD5220 variants with different resistance values (e.g., AD5220BRZ10 for 10 kΩ) or packages. Cross-family replacements require verification of pin compatibility and interface timing specifications.