AD5204BRU50

Overview

The AD5204BRU50 is a quad-channel, 256-position digitally controlled variable resistor with a nominal terminal resistance of 50 kΩ. It operates on a single supply from +2.7 V to +5.5 V or dual supplies of ±2.3 V to ±2.7 V. The device features a 3-wire SPI-compatible serial interface for programming and includes a power-on midscale preset function. Each channel contains an independent volatile latch holding the resistance value. The component is housed in a 24-lead TSSOP package and supports operation across an extended industrial temperature range of −40°C to +85°C.

Feature Summary

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

Applications

• Mechanical potentiometer replacement
• Instrumentation gain and offset adjustment
• Programmable voltage-to-current conversion
• Line impedance matching

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current data sheet to confirm package type and resistance tolerance. Confirm availability status as older revisions may be discontinued. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS input structure.

Selection Notes

Select this model when four independent digital potentiometers are required in a compact surface-mount footprint. The 50 kΩ resistance value offers a balance between bandwidth and noise performance compared to 10 kΩ or 100 kΩ variants. Verify that the application does not require non-volatile memory retention, as this device utilizes volatile latches that lose settings upon power loss.

Part Context

This component belongs to the AD5204/AD5206 family of 4-/6-channel digital potentiometers. It shares functional similarities with the AD8400 series but provides multiple channels in a single package. The BR designation typically indicates a specific temperature grade and packaging option within the Analog Devices portfolio.

Replacement Considerations

Direct replacements include other parts from the AD5204 family with different resistance values or packages. For non-volatile requirements, consider the AD512x or AD514x series. Cross-model substitution requires verifying pin compatibility and electrical specifications such as wiper resistance and bandwidth.