AD5203AR100-REEL

Overview

The AD5203AR100-REEL is a quad-channel, 64-position digital potentiometer manufactured by Analog Devices Inc. It provides four independent variable resistors in a 24-lead SOIC package with a nominal resistance of 100 kΩ. The device operates on a single +2.7 V to +5.5 V supply and features a 3-wire SPI-compatible serial interface for data loading at rates up to 10 MHz. Each channel includes a 6-bit latch holding the programmed resistance value, allowing for precise electronic adjustment functions similar to mechanical potentiometers.

Feature Summary

• Quad-channel architecture with 64 discrete positions per resistor
• Nominal end-to-end resistance of 100 kΩ with ±30% tolerance
• Active low shutdown pin reduces power consumption to microwatt levels
• Serial data output (SDO) supports daisy-chaining multiple devices

Applications

• Mechanical potentiometer replacement in embedded systems
• Programmable filters, delays, and time constant adjustments
• Line impedance matching in signal processing circuits
• Power supply voltage adjustment and calibration

Procurement Notes

Verify the specific suffix 'REEL' indicates tape-and-reel packaging rather than tube packaging when sourcing components. Confirm the '100' designation corresponds to the 100 kΩ resistance variant. Ensure the manufacturer is identified as Analog Devices Inc. or its authorized distribution channels to guarantee component authenticity and traceability.

Selection Notes

Select this model for applications requiring four independent programmable resistors with a high nominal value of 100 kΩ. The 6-bit resolution provides 64 steps, suitable for coarse adjustment tasks. Consider the 100 kΩ bandwidth limitation of 71 kHz if high-frequency signal attenuation is required. Verify that the 3-wire serial interface timing requirements align with the host microcontroller's capabilities.

Part Context

This component belongs to the AD5203 family of digital potentiometers. It serves as a direct electronic replacement for mechanical potentiometers in space-constrained designs. Higher resolution alternatives within the same product line include the 256-position AD8403. The device is designed for extended industrial temperature operation ranging from –40 °C to +85 °C.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.