AD5203ARUZ10

Overview

The AD5203ARUZ10 is a quad-channel, 64-position digital potentiometer in a TSSOP-24 package. It features four independent variable resistors with a nominal resistance of 10 kΩ and a temperature coefficient of 700 ppm/°C. The device operates on a single +2.7 V to +5.5 V supply and uses a 3-wire SPI-compatible serial interface for data loading at rates up to 10 MHz. Key electrical characteristics include a differential nonlinearity (DNL) of ±0.25 LSB and an integral nonlinearity (INL) of ±0.75 LSB in potentiometer mode. It supports power shutdown via the SHDN pin and midscale reset via the RS pin.

Feature Summary

• Quad-channel architecture with 64 programmable positions per channel
• 10 kΩ nominal end-to-end resistance with ±1% channel-to-channel matching
• 3-wire SPI-compatible serial interface supporting daisy-chaining
• Power shutdown mode reduces current consumption to less than 5 mA

Applications

• Mechanical potentiometer replacement
• Programmable filters, delays, and time constants
• Volume control and panning circuits
• Line impedance matching
• Power supply adjustment

Procurement Notes

Verify the specific suffix '10' confirms the 10 kΩ resistance value, as other variants like AD5203ARU100 exist with 100 kΩ resistance. Confirm the RU-24 package designation matches the required TSSOP-24 footprint. Ensure compatibility with the -40°C to +85°C industrial temperature range specified for this model.

Selection Notes

Select this component when a quad-channel solution is required to replace mechanical pots. The 10 kΩ value is suitable for moderate signal levels. Consider the 700 ppm/°C temperature coefficient for thermal stability requirements. The 6-bit resolution provides 64 discrete steps, which may be insufficient for high-precision applications requiring finer control.

Part Context

The AD5203 belongs to the AD520x family of digital potentiometers. It serves as a direct electronic replacement for mechanical potentiometers in compact designs. Higher resolution alternatives in the same form factor include the 256-position AD8403. The ARUZ10 variant specifically denotes the automotive-grade or extended industrial version with 10 kΩ resistance in the thin TSSOP package.

Replacement Considerations

For higher resolution needs, the AD8403 offers 256 positions in a compatible package. For single-channel applications, consider the AD5200 or AD5201. Verify that the wiper current limits (max 5 mA) are not exceeded in the target circuit compared to the mechanical pot being replaced.