The MCP4132-503E/SN from Microchip Technology is a single-channel, 50kΩ digital potentiometer configured as a rheostat, offering 129 tap points for precise resistance adjustment. Designed for surface-mount applications, it operates over a 1.8V to 5.5V supply range, making it suitable for low-voltage and battery-powered systems. The device features an SPI interface for digital control, ensuring seamless integration with microcontrollers and other digital systems. With a ±20% tolerance and a 150ppm/°C temperature coefficient, it balances performance and stability. Its volatile memory requires reconfiguration upon power-up, while the 75Ω typical wiper resistance minimizes signal distortion. Packaged in an 8-SOIC tube, it is RoHS3 compliant and rated MSL 1 (Unlimited) for moisture sensitivity.
The MCP4132-503E/SN stands out for its SPI-controlled flexibility, wide voltage range, and high tap resolution, making it ideal for applications demanding precision and low-power operation. Its small form factor and robust performance cater to modern embedded designs, while its cost-effective and environmentally compliant construction ensures broad industry adoption. A reliable choice for engineers seeking a digitally adjustable rheostat with minimal signal degradation.
Download datasheets and manufacturer documentation for MCP4132-503E/SN