AD5220BR10-REEL7

Overview

The AD5220BR10-REEL7 is a single-channel, 7-bit digitally controlled variable resistor with a nominal resistance of 10 kΩ. It features an Up/Down serial interface for wiper position control and volatile memory that resets to the center position upon power-up. The device operates within a supply voltage range of 2.7 V to 5.5 V, drawing a typical supply current of 15 µA. Key electrical characteristics include a maximum wiper resistance of 100 Ω and a bandwidth of 650 kHz at the 10 kΩ setting. It is housed in an 8-lead SOIC package and supports operation from -40°C to +85°C.

Feature Summary

• 7-bit resolution providing 128 tap positions for precise resistance adjustment
• Up/Down serial interface requiring only three pins (CLK, CS, U/D) for control
• Volatile brush memory retains settings only while powered; defaults to mid-scale on reset
• Low power consumption with 15 µA typical supply current at 5 V

Applications

• Programmable gain amplifiers in signal conditioning circuits
• Voltage divider networks requiring digital adjustment
• Variable attenuators in RF and audio applications
• Hardware trim replacement in manufacturing test equipment

Procurement Notes

Verify the specific suffix REEL7 corresponds to the tape-and-reel packaging format required for automated assembly. Confirm RoHS compliance status as indicated by the Z suffix in similar part numbers, though this specific designation requires datasheet confirmation. Ensure the 10 kΩ resistance value matches the circuit design requirements before procurement.

Selection Notes

Select this component when a simple Up/Down control interface is preferred over SPI or I2C protocols. The 10 kΩ nominal resistance offers a balance between bandwidth performance and power dissipation. Consider the volatile nature of the memory if state retention across power cycles is critical, as the device does not include non-volatile storage.

Part Context

This part belongs to the AD5220 family of single-channel digital potentiometers. The BR10 designation specifies the commercial temperature grade (-40°C to +85°C), the SOIC-8 surface mount package, and the 10 kΩ end-to-end resistance value. It serves as a solid-state alternative to mechanical potentiometers in space-constrained designs.

Replacement Considerations

Direct pin-compatible replacements within the same series include AD5220BRZ10-REEL7 (RoHS compliant version). For higher resolution needs, consider the AD5231 series which offers 10-bit resolution but utilizes a different SPI interface.