Microchip Technology

MCP4251-103E/ST  

Digital Potentiometers

MCP4251-103E/ST Description

The MCP4251-103E/ST from Microchip Technology is a dual-channel, 10kΩ digital potentiometer with 257 taps, offering precise resistance adjustment via SPI interface. Designed for surface-mount applications, it operates within a 1.8V to 5.5V supply range, making it suitable for low-voltage systems. This volatile-memory device features a linear taper and a ±20% tolerance, with a typical wiper resistance of 75Ω. Its 150ppm/°C temperature coefficient ensures stable performance across varying environmental conditions. Packaged in a 14-TSSOP tube, it is ROHS3 compliant and REACH unaffected, meeting modern environmental standards.

MCP4251-103E/ST Features

• Dual-channel configuration: Independent control of two potentiometers in a single package.
• SPI interface: Enables seamless integration with microcontrollers and digital systems.
• Wide voltage range (1.8V–5.5V): Compatible with both 3.3V and 5V logic systems.
• 257-tap resolution: Provides fine-grained adjustment for precision applications.
• Low wiper resistance (75Ω typ): Minimizes signal distortion in analog circuits.
• Volatile memory: Settings are lost on power-down, ideal for dynamic recalibration.
• Industrial-grade reliability: MSL 1 (unlimited) moisture sensitivity ensures robustness in manufacturing.

MCP4251-103E/ST Applications

• Analog signal conditioning: Adjustable gain/offset in op-amp circuits.
• Volume/backlight control: Digital replacement for mechanical potentiometers in consumer electronics.
• Sensor calibration: Fine-tuning resistance in industrial sensors (e.g., pressure, temperature).
• Programmable voltage dividers: Used in power management and reference voltage circuits.
• Test/measurement equipment: Dynamic resistance adjustment for automated testing systems.

Conclusion of MCP4251-103E/ST

The MCP4251-103E/ST stands out for its high resolution, dual-channel design, and SPI compatibility, making it a versatile choice for precision analog control. Its low-voltage operation and compact form factor cater to modern embedded systems, while its industrial reliability suits harsh environments. Engineers favor this IC for applications demanding repeatable, software-controlled resistance adjustments, eliminating the need for manual potentiometers. A cost-effective solution for automation, instrumentation, and consumer electronics.

MCP4251-103E/ST Documents

Download datasheets and manufacturer documentation for MCP4251-103E/ST

PCN Assembly/Origin :

Qualification Copper Wire 17/Mar/2014      

Datasheets :

MCP413x,415x,423x,425x      

PCN Packaging :

Packing Changes 10/Oct/2016       Label and Packing Changes 23/Sep/2015      

Design Resources :

MCP4251 Development Tool Selector      

HTML Datasheet :

MCP413x,415x,423x,425x      

PCN Design/Specification :

Lead Frame Cancel 08/Feb/2017       Lead Frame 10/Jan/2017      

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH