AD5203ARZ100-REEL

Overview

The AD5203ARZ100-REEL is a quad-channel, 64-position digital potentiometer manufactured by Analog Devices Inc. It integrates four independent variable resistors within a 24-lead SOIC package. 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 provides a nominal resistance of 100 kΩ with a temperature coefficient of 700 ppm/°C. The unit includes volatile memory that retains settings during power shutdown via the SHDN pin.

Feature Summary

• Quad-channel architecture providing four independent 6-bit digitally controlled variable resistors
• 100 kΩ nominal end-to-end resistance with ±30% tolerance and 700 ppm/°C temperature coefficient
• 3-wire serial interface supporting daisy-chaining via SDO output pin
• Power shutdown mode reduces current consumption to microwatt levels while maintaining latch settings

Applications

• Mechanical potentiometer replacement in programmable systems
• Adjustment of programmable filter time constants and delays
• Line impedance matching in signal processing circuits
• Power supply voltage adjustment and control loops

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package integrity as the device is ESD sensitive. Ensure compatibility with existing PCB footprints for the 24-lead SOIC format. Check for RoHS compliance status relevant to specific manufacturing regions. Validate supply chain stability as availability may fluctuate.

Selection Notes

Select this model when four independent 100 kΩ variable resistors are required in a compact surface-mount form factor. The 6-bit resolution offers 64 tap positions suitable for general-purpose analog control. Consider the 700 ppm/°C temperature coefficient for thermal stability requirements. Verify that the volatile memory behavior aligns with system power-up initialization needs.

Part Context

This component belongs to the AD5203 family of quad-channel digital potentiometers. It serves as a lower-resolution alternative to the 256-position AD8403 series. The device replaces mechanical potentiometers in applications requiring electronic adjustment of resistance values without manual intervention.

Replacement Considerations

The AD8403ARZ100-REEL offers pin-compatible higher resolution with 256 positions. For non-volatile storage requirements, consider the AD5232 series. Single-channel alternatives include the AD5201 or AD5202 families.