AD5203AR100

Overview

The AD5203AR100 is a quad-channel, 64-position digital potentiometer from Analog Devices Inc., housed in a 24-lead Wide Body SOIC (SOL-24) package. It features four independent variable resistors with a nominal end-to-end resistance of 100 kΩ and a tolerance of ±30%. The device operates on a single +2.7 V to +5.5 V supply and utilizes a 3-wire SPI-compatible serial interface for data loading at rates up to 10 MHz. Key electrical characteristics include a wiper resistance of 45 Ω to 100 Ω, a temperature coefficient of 700 ppm/°C, and a shutdown current of less than 5 mA. It supports midscale reset and maintains latch settings during power-down.

Feature Summary

• Quad-channel architecture providing four independent 6-bit digitally controlled variable resistors.
• 100 kΩ nominal resistance with ±30% tolerance and 700 ppm/°C temperature coefficient.
• 3-wire SPI-compatible serial interface supporting daisy-chaining via SDO pin.
• Power shutdown mode reduces current consumption to under 5 mA while retaining register data.

Applications

• Mechanical potentiometer replacement in space-constrained designs.
• Programmable filters, delays, and time constant adjustments.
• Volume control and panning in audio circuits.
• Line impedance matching and power supply voltage adjustment.

Procurement Notes

Verify the specific suffix AR100 confirms the 100 kΩ resistance value and SOL-24 package type. Confirm that the required operating temperature range aligns with the specified -40°C to +85°C industrial limits. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS input structures.

Selection Notes

Select this component when four independent variable resistors are required in a single package. The 100 kΩ value is suitable for higher impedance applications compared to the 10 kΩ variant. Consider the 700 ppm/°C temperature coefficient for thermal stability requirements. The 64-position resolution may be insufficient for high-precision applications requiring finer step sizes.

Part Context

This part belongs to the AD5203 family of quad-channel digital potentiometers. The 'AR' designation indicates the Wide Body SOIC package, while '100' specifies the 100 kΩ resistance value. It serves as a direct electronic replacement for mechanical potentiometers, offering programmability without moving parts.

Replacement Considerations

For applications requiring higher resolution, the AD8403 offers 256 positions. For lower resistance values, the AD5203AN10 or AD5203AR10 provide 10 kΩ options. Pin compatibility is maintained across the AD5203 series variants within the same package type.