AD5204BRZ50

Overview

The AD5204BRZ50 is a quad-channel, 8-bit digital potentiometer IC from Analog Devices. It provides four independently programmable variable resistors with 256 tap positions and a nominal end-to-end resistance of 50 kΩ. The device operates on a single supply voltage ranging from +2.7 V to +5.5 V or dual supplies up to ±2.7 V. It features a standard 3-wire SPI-compatible serial interface for data input and includes an SDO pin for daisy-chaining capabilities. The part utilizes volatile memory to store wiper settings and is housed in a 24-lead SOIC package.

Feature Summary

• Quad-channel architecture with 256-position resolution per channel
• 50 kΩ nominal terminal resistance with 700 ppm/°C temperature coefficient
• 3-wire SPI-compatible serial interface with daisy-chain support via SDO pin
• Power-on midscale preset and hardware reset (PR) pin functionality

Applications

• Mechanical potentiometer replacement in embedded systems
• Instrumentation gain and offset adjustment circuits
• Programmable voltage-to-current conversion stages
• Line impedance matching networks

Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation. The base model may be available in tube or reel packaging formats. Confirm RoHS compliance status and lead times directly with authorized distributors as availability varies by region.

Selection Notes

Select this component when four independent digital resistors are required within a single package. Ensure the system logic levels match the 2.7 V to 5.5 V operating range. Consider the 50 kΩ resistance value against load requirements; higher resistance values reduce power consumption but may limit bandwidth.

Part Context

This component belongs to the AD5204 family of 4-channel digital potentiometers. It shares architectural similarities with the AD5206 (6-channel) and AD5200 series (single-channel). All variants utilize the same SPI control protocol and offer identical 256-position resolution, differing primarily in channel count and package options.

Replacement Considerations

The AD5204BRZ50-REEL serves as a direct reel-packaged alternative to the tube version. Verify that any substitute maintains the 50 kΩ resistance value and 24-lead SOIC footprint to ensure mechanical compatibility.