AD5203AN100

Overview

The AD5203AN100 is a quad-channel, 64-position digital potentiometer from Analog Devices. It features four independent variable resistors with a nominal resistance of 100 kΩ and a temperature coefficient of 700 ppm/°C. 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. Each channel includes a 6-bit latch holding the programmed resistance value. Key control pins include SHDN for power shutdown and RS for midscale reset. The component is housed in a 24-lead narrow body plastic DIP package and supports operation across an extended industrial temperature range of –40°C to +85°C.

Feature Summary

• Quad-channel architecture providing four independent 64-position digitally controlled variable resistors
• 100 kΩ nominal end-to-end resistance with ±30% tolerance and 700 ppm/°C temperature coefficient
• 3-wire SPI-compatible serial interface supporting daisy-chaining via SDO output
• Active low SHDN pin enables microwatt power shutdown while maintaining latch settings

Applications

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

Procurement Notes

Verify the specific suffix AN100 corresponds to the 100 kΩ resistance variant in the 24-lead Narrow Body Plastic DIP (N-24) package. Confirm that the required operating temperature range aligns with the specified –40°C to +85°C industrial grade. Ensure ESD precautions are implemented during handling due to the device's sensitivity to electrostatic discharge events up to 4000 V.

Selection Notes

Select the AD5203AN100 when four independent 100 kΩ variable resistors are required within a single package. This model is suitable for applications needing 6-bit resolution and non-volatile memory retention during shutdown states. Consider the 10 MHz update rate for high-speed programming requirements. For higher resolution needs, evaluate the pin-compatible 256-position AD8403 instead.

Part Context

The AD5203 belongs to the AD520x family of quad-channel digital potentiometers. The 'AN' designation indicates the 24-lead Narrow Body Plastic DIP package, while '100' specifies the 100 kΩ resistance value. This part replaces discrete mechanical potentiometers, reducing board space and improving reliability in programmable analog signal paths.

Replacement Considerations

For direct pin-compatible upgrades requiring higher resolution, the AD8403 offers 256 positions. Verify that the target application can accommodate the specific serial interface timing and logic levels defined in the datasheet when substituting similar quad-channel digital potentiometers.