Microchip Technology

MCP42100-I/ST  

Digital Potentiometers

MCP42100-I/ST Description

The MCP42100-I/ST from Microchip Technology is a dual-channel, 256-tap digital potentiometer with a 100kΩ resistance and ±30% tolerance, designed for precision analog signal adjustment in embedded systems. Operating within a 2.7V to 5.5V supply range, it features an SPI interface for seamless digital control, making it ideal for applications requiring programmable resistance. The device is housed in a 14-pin TSSOP package, ensuring compact surface-mount compatibility. With a volatile memory type, it requires reinitialization on power-up but offers real-time adjustability. Its 800ppm/°C temperature coefficient ensures stable performance across varying environmental conditions.

MCP42100-I/ST Features

• Dual-channel configuration: Independent control of two potentiometers in a single IC.
• 256-tap resolution: High precision for fine-grained resistance adjustments.
• SPI interface: Enables easy integration with microcontrollers and digital systems.
• Cascade pin: Allows daisy-chaining multiple devices for expanded functionality.
• Low wiper resistance (175Ω typ): Minimizes signal distortion in analog circuits.
• Wide voltage range (2.7V–5.5V): Compatible with both 3.3V and 5V systems.
• RoHS3 compliant & REACH unaffected: Meets environmental and safety standards.

MCP42100-I/ST Applications

• Audio equipment: Volume control, tone adjustment, and gain calibration.
• Industrial automation: Sensor calibration, feedback loop tuning, and process control.
• Test & measurement: Programmable voltage dividers and reference voltage generation.
• Consumer electronics: Display brightness/contrast adjustment and user interface controls.
• Automotive systems: Infotainment and climate control interfaces.

Conclusion of MCP42100-I/ST

The MCP42100-I/ST stands out for its high resolution, dual-channel flexibility, and robust SPI interface, making it a versatile choice for digital potentiometer applications. Its wide operating voltage and cascade capability provide design flexibility, while its compact form factor suits space-constrained PCB layouts. Engineers will appreciate its balance of precision, ease of integration, and cost-effectiveness, particularly in systems requiring dynamic analog signal control.

MCP42100-I/ST Documents

Download datasheets and manufacturer documentation for MCP42100-I/ST

PCN Assembly/Origin :

Bond Wire 09/May/2017      

Datasheets :

MCP41zzz, MCP42zzz      

PCN Packaging :

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

Manuals :

Development Tools Catalog      

Design Resources :

MCP42100 Development Tool Selector      

PCN Design/Specification :

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

Environmental Information :

Microchip CA Prop65       Microchip RoHS       Microchip REACH