AD5220BRMZ10

Overview

The AD5220BRMZ10 is a single-channel, 7-bit digitally controlled variable resistor with a nominal resistance of 10 kΩ. It operates on a 2.7 V to 5.5 V supply and features a three-wire serial interface (CLK, CS, U/D) for wiper position control. The device provides 128 tap positions with linear taper characteristics. Key electrical specifications include a typical wiper resistance of 40 Ω, a resistor temperature coefficient of 800 ppm/°C, and a power supply range supporting both single and dual supply configurations. It is housed in an 8-lead MSOP package.

Feature Summary

• 128-position resolution with 7-bit digital control
• Three-wire serial interface (Clock, Chip Select, Up/Down)
• Nominal resistance options: 10 kΩ, 50 kΩ, or 100 kΩ
• Power-on centered wiper position

Applications

• Programmable gain amplifiers
• Voltage divider adjustments
• Variable resistor replacement in calibration circuits

Procurement Notes

Verify the specific suffix indicates the 10 kΩ variant. Confirm the package type matches the design requirements, as this model uses an 8-lead MSOP. Check for automotive grade variants if operating conditions require extended reliability standards beyond the commercial -40°C to +85°C range.

Selection Notes

Select based on required nominal resistance (10 kΩ for this part number). Ensure the system voltage falls within the 2.7 V to 5.5 V range. Consider the 800 ppm/°C temperature coefficient for precision applications. Verify interface compatibility with the host microcontroller's serial clock and data lines.

Part Context

This component belongs to the AD5220 family of 128-position digital potentiometers. Other variants in the series offer different resistance values (50 kΩ, 100 kΩ) and packaging options such as SOIC or PDIP. The BRMZ suffix specifically denotes the commercial temperature range and MSOP package format.

Replacement Considerations

Direct replacements include other AD5220 variants with matching resistance and package, such as AD5220BRM50 or AD5220BRM100, provided the resistance value difference is acceptable for the circuit design.