AD5204BR10-REEL

Overview

The AD5204BR10-REEL is a quad-channel, 8-bit digital potentiometer from Analog Devices. It provides four independently programmable variable resistors with 256 tap positions and a nominal terminal resistance of 10 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. Control is managed via a standard 3-wire SPI-compatible serial interface (SDI, CLK, CS). Each channel features a dedicated latch for resistance storage and supports daisy-chaining through an SDO output pin.

Feature Summary

• Quad-channel architecture with 256-position resolution per channel
• Nominal end-to-end resistance of 10 kΩ with ±30% tolerance
• 3-wire SPI-compatible serial interface with daisy-chain capability
• 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 applications

Procurement Notes

Verify the specific package type against the datasheet ordering guide, as the BR suffix typically denotes SOIC packaging while other variants may use TSSOP or LFCSP. Confirm that the REEL suffix indicates tape-and-reel shipping format rather than bulk packaging. Ensure the design accounts for the volatile nature of the internal latches, requiring state restoration upon power cycling.

Selection Notes

Select this component when four independent 10 kΩ digitally controlled resistors are required within a single package. The 10 kΩ value offers a bandwidth of approximately 721 kHz at 5 V, suitable for moderate-speed signal conditioning. Consider the AD5204BR50 or AD5204BR100 if higher resistance values are needed, noting that bandwidth decreases proportionally with increased terminal resistance.

Part Context

This part belongs to the AD5204/AD5206 family of 4-/6-channel digital potentiometers. The AD5204 variant specifically integrates four channels, whereas the AD5206 provides six. Both share identical control logic and electrical characteristics, differing primarily in channel count and pinout configuration. The family replaces mechanical pots in space-constrained PCB designs.

Replacement Considerations

Direct functional equivalents include the AD5204BR50 and AD5204BR100 for different resistance values. For pin-compatible replacements with non-volatile memory, consider the AD5242 series. Verify that any substitute maintains the 3-wire serial interface timing requirements and compatible supply voltage ranges.