AD5204BRUZ10

Overview

The AD5204BRUZ10 is a quad-channel, 8-bit digital potentiometer with 256 tap positions and a nominal terminal resistance of 10 kΩ. It operates on a single supply from +2.7 V to +5.5 V or dual supplies up to ±2.7 V. The device features a 3-wire SPI-compatible serial interface for programming individual channels via an 11-bit data word. Each channel includes a volatile latch holding the wiper position, which defaults to midscale (0x80) upon power-up or via the active-low PR pin. The part is housed in a 24-lead TSSOP package and functions over an industrial temperature range of −40°C to +85°C.

Feature Summary

• Quad-channel architecture with 256 programmable positions per channel
• 10 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 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 datasheet to confirm package type and tape/reel specifications. Ensure compatibility with system voltage levels, as logic thresholds vary between 3 V and 5 V operation. Confirm that the volatile memory requirement aligns with application needs, as settings are lost during power cycles without external retention.

Selection Notes

Select this component when four independent variable resistors are required within a single IC footprint. The 10 kΩ resistance value offers a balance between bandwidth and noise performance compared to higher resistance variants. Consider the 24-lead TSSOP package dimensions for PCB layout constraints. Verify that the 3-wire serial interface matches the microcontroller's available GPIO pins.

Part Context

This device belongs to the AD5204/AD5206 family of digital potentiometers. The AD5204 variant specifically provides four channels, whereas the AD5206 provides six. Both share identical electrical characteristics and control interfaces but differ in pin count and channel density. The BR suffix indicates the commercial temperature grade extension to industrial limits.

Replacement Considerations

Direct functional equivalents include other quad-channel digital potentiometers from Analog Devices such as the AD8403 series, though interface protocols may differ. When substituting, verify pinout compatibility and ensure the replacement supports the required 10 kΩ resistance value and SPI timing parameters.